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The Graveyard - Products No Longer Supported => Routers => DIR-880L => Topic started by: scan80269 on August 29, 2018, 07:14:24 PM

Title: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on August 29, 2018, 07:14:24 PM
I'm looking for help to confirm whether my problem is a bug.

DIR-880L HW A1 running latest 1.20 firmware in Bridge Mode.  Location: Palo Alto, California, USA

PC clients connected to the LAN ports have normal internet access through the DIR-880L bridge for a day or so, then apparently the IP address is not renewed after expiration so the clients get autoconfiguration IP addresses (e.g. 169.254.140.86) and lose connection to the internet.  This behavior has been reproduced at least a dozen times and is consistently repeatable.  Power cycling the DIR-880L enables the LAN connected clients to regain internet access, until their IP leases expire again.

The wireless router that this DIR-880L bridge connects to for internet access is a Netgear R8000 Nighthawk X6.  Internet provider is Comcast Business.

For comparison, I also have two DIR-868L configured in Bridge mode running latest firmware and in the same role as the DIR-880L, and the DIR-868L units do not share the same issue.

I appreciate any help to get to a resolution on this issue.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on August 29, 2018, 09:42:49 PM

Is Smart Connect, Beamforming and or MIMO enabled on the router?
What is the distance between the router and the 880L?


I just put mine online tonite and will let it run for a few days and see if I notice anything...
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on August 31, 2018, 07:11:22 AM
The DIR-880L is configured to connect to the 5G band of the Netgear router.

I currently don't have admin access to this router (it's not owned by me), but I'd guess that beamforming is enabled, Smart Connect is enabled, but MIMO is not.

Distance is approx. 50 feet, with two walls in between.  The Comcast service downlink speed is 100Mbps, and this bridge link can sustain that speed, at least when other connected clients are not using some of the bandwidth.

With the DIR-880L in bridge mode, the Netgear router acts as the DHCP server for clients attached to the DIR-880L, right?  The Netgear router appears to hand out IP leases that expire in 24 hours.  After expiration, the clients' requests for IP address renewal apparently goes unanswered.  After a client loses the internet connection after its IP address expired, I tried "ipconfig /renew" but it sits there for a while then times out.  I have to power cycle the DIR-880L before any client gets a valid IP address again.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on August 31, 2018, 07:21:40 AM
Possible that the distance is too far and the signal is dropped. With two walls and 50 feet, 5Ghz is effected by building materials. I forgot to check mine last nite after I got home. I didn't get home til late. I will today though. Mines in a 15-12 foot range though.  ::)

Can you move the 880L any closer?

Yes the NG router is the main host DHCP server...
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on August 31, 2018, 08:36:55 AM
Unfortunately the 880L bridge cannot be located.  It is in my test lab and the Netgear router is in another lab.

I have switched to using DIR-868L in bridge mode.  As a substitute for DIR-880L, the DIR-868L can keep attached clients connected for many days, so it doesn't appear to have the same issue with wrecking IP address renewal for clients.  The only downside in using DIR-868L is its latest firmware still missing the KRACK fix, though I understand the 868L is end-of-life so may never get another firmware release.  I've also briefly tried AdvancedTomato firmware with the 868L in bridge mode and it seems to work fine also.

Unless the DIR-880L bridge can keep the clients connected to the internet without daily manual intervention, I won't be able to use it in my lab.

By the way, that Netgear router hands out 48-hour or 24-hour IP address leases (don't know why it's not consistent), so an accurate test for this issue may require up to 48 hours for the lease to expire for a client.  I already got misled when a client continued to work past the 24-hour mark, only to have it cut off again past the 48-hour mark.

Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on August 31, 2018, 08:57:17 AM
Can someone set up an IP address reservation for the DIR-880L on the NG router? This will override the lease time out. Possible that when the lease times out, the connection drops and doesn't gain another IP address, however in most cases when the lease runs out, the connection should not be dropped nor the IP address should be changed if the 880L is still connected.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on August 31, 2018, 11:03:35 AM
I have no admin access to the Netgear router, but have requested it.

Getting IP address reservations may be difficult, as I have at least 9 clients connected downstream from the bridge.

For now, the workaround continues to be DIR-868L replacing the DIR-880L in bridge mode.

Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on August 31, 2018, 01:57:19 PM
Ok, will be checking mine when I get home after bit.  ;)
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on August 31, 2018, 03:45:41 PM
OK, seems like this is a problem. I got home and I could not access the main host router from my Windows PC thru the 880L. LED was BLUE on the 5Ghz radio. I can't remember if the Internet Globe was, I think it was. Both the Windows PC and Mac Mini that were wired to the back of the 880L reporting having IP addresses. I could not ping the main host router. I disabled the LANs on both PCs and then re-enabled them and they failed to get an IP address. I powered OFF the 880L and after it was back, PCs got IPs and had Internet access.

I have reverted back to v1.08WW 2016 FW. I didn't do a factory reset after using the Recovery Mode as I saw Bridge mode was still configured after the FW was downgraded. I'll let it run over the weekend. If it happens again, i'll factory reset. I'm hoping it doesn't.  ::)

I'll have D-Link review this.  ;)
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 03, 2018, 04:14:06 PM
Thanks much for helping to investigate this, FurryNutz!

I recall seeing last week the Internet Globe LED lit up blue, and the 5GHz radio LED slow blinking on the 880L bridge.

Just before this long weekend, I set up my 880L bridge and 868L bridge running alongside each otherl, both connecting to the same Netgear router SSID over 5GHz WPA2/AES.  The 868L has the usual 8 clients attached (via a Netgear GS116 gigabit switch) and the 880L has just one client attached directly.

I just checked connectivity.  It's been 3 days since the setup.  The clients behind the 868L bridge are all responding to remote access (via TeamViewer).  The single client behind the 880L bridge does not respond to remote access, most likely because the 880L has cut off internet connection to this client.

For lack of any evidence to the contrary, I still suspect this issue is related to 880L breaking client IP address renewals.  After rebooting the 880L, connected clients all get normal IP address leases, and remain connected to the internet within their lease periods.  Once a lease expires for a client, however, its internet connection will fail.  By comparison, the 868L bridge working in the same environment as the 880L does not exhibit this issue.

At least the failure symptoms have remained highly consistent for this 880L, for as long as I have worked with it as a wireless bridge.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 04, 2018, 06:33:08 AM
Well, the 880L was good all weekend. I checked this morning before leaving for work and still had internet access thru the 880L in bridge mode. I presume there is a problem in recent FW. I've past this along to D-Link for review. I mean time, if you want to use the 880L, revert back to v1.08B04 using this process:
Emergency Recovery Mode (http://forums.dlink.com/index.php?topic=44909.msg163599#msg163599)
You'll need to use this process to get back to older FW. You can't use the routers web page to do this...
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 04, 2018, 06:31:05 PM
Thanks for the update!  I have flashed my 880L back to 1.08WW firmware, and also reconfigured it to router mode, did a reset, then back to bridge mode.

Attached client got a 24-hour IP address lease, so will check by tomorrow afternoon to see it still has internet access through the 880L.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on September 05, 2018, 10:47:51 AM
I will issue a ticket (dtrack) for this issue.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 05, 2018, 10:50:21 AM
Thank you Sir.  ;)
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 05, 2018, 02:58:46 PM
My 880L bridge running with 1.08WW firmware has passed the 24-hour mark, and the attached client still has a valid IP address assigned by DHCP server and internet access.

This is beginning to look like the issue tracks the latest 880L 1.20 firmware.  I'll keep the client connected to the 880L bridge indefinitely to see if the issue reappears.

Separately, my 868L bridge (with 1.20B01 BETA firmware) just started showing the exact same issue, but it has been up and running for many days before attached clients lost their IP address leases.  Should I flash the 868L firmware back to 1.12B04 as well to compare?
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on September 05, 2018, 03:18:06 PM
I would continue running the 868 with beta firmware if you can. See if it is dropping after 24 hours or longer and I can report it. Thanks for taking the time to test.

These are beta firmware releases and haven't gone through the full testing yet but I will report the 868L also. Running these in bridge mode should not be affected by the KRACK/WPA2 exploit so downgrading the firmware should be ok. I was told only AP and WDS modes on access points, routers, and extenders are at  risk.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 05, 2018, 04:28:15 PM
Thanks for the help, GreenBay42!

The 868L bridge issue is much harder to troubleshoot, as it tends to stay working for many days (~2 weeks) before clients get cut off.  I almost missed it as the clients kept working day after day.  I do notice that when the failure hits, the internal global icon on the face of the 868L is lit yellow instead of green.

From what I can tell, 880L & 868L bridges exhibit the same failure symptoms with attached clients failing to have their DHCP assigned IP addresses renewed.  The mean time between failure is much longer with the 868L (running latest beta firmware) compared to the 880L.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 05, 2018, 04:37:22 PM
What FW version do you have loaded on the 868L?

Thanks for the help, GreenBay42!

The 868L bridge issue is much harder to troubleshoot, as it tends to stay working for many days (~2 weeks) before clients get cut off.  I almost missed it as the clients kept working day after day.  I do notice that when the failure hits, the internal global icon on the face of the 868L is lit yellow instead of green.

From what I can tell, 880L & 868L bridges exhibit the same failure symptoms with attached clients failing to have their DHCP assigned IP addresses renewed.  The mean time between failure is much longer with the 868L (running latest beta firmware) compared to the 880L.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 05, 2018, 04:48:41 PM
I have two 868L (revA) running 1.20B01 BETA firmware.

I started with 1.12B04 firmware, reconfigured the 868L to bridge mode, then updated to 1.20B01 BETA firmware.  I recall encountering some difficulty setting bridge mode when the firmware is 1.20B01 BETA, so I rolled back to 1.12B04 first.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 05, 2018, 05:02:45 PM
Wonder if this is a v1.20x FW issue for these routers that support bridge mode. I presume v1.12 should not reproduce this...That was the last time I had mine online for a bit. Maybe add this to DTrack as well, however I presume, it may not get fixed for the 868L since it's already EOL. I Hope someone will have some compassion and do fix it though.  :-\

Seems like this latest KRACK patches have broken some things...

I have two 868L (revA) running 1.20B01 BETA firmware.

I started with 1.12B04 firmware, reconfigured the 868L to bridge mode, then updated to 1.20B01 BETA firmware.  I recall encountering some difficulty setting bridge mode when the firmware is 1.20B01 BETA, so I rolled back to 1.12B04 first.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on September 05, 2018, 05:34:19 PM
Seems like this latest KRACK patches have broken some things...

 :-X

A lot of the KRACK BETA firmware files seemed to have broken something while fixing WPA2. Again, being beta, has not gone through the complete testing procedure. I will get the security team here on it to see the status of "official" firmware releases.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 05, 2018, 05:35:57 PM
Thank you Sir.  ;)

Seems like this latest KRACK patches have broken some things...

 :-X

A lot of the KRACK BETA firmware files seemed to have broken something while fixing WPA2. Again, being beta, has not gone through the complete testing procedure. I will get the security team here on it to see the status of "official" firmware releases.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on September 06, 2018, 07:25:47 AM
Wow fastest reply ever. They sent me beta firmware to fix bridge issue. This has 2 firmware files, upgrade the middle file first then the 1.20.  Let us know if this fixes the issue.

ftp://FTP2.DLINK.COM/SECURITY_ADVISEMENTS/DIR-880L/REVA/DIR-880L_REVA_FIRMWARE_PATCH_v1.20B01_I4HA_BETA.zip (ftp://FTP2.DLINK.COM/SECURITY_ADVISEMENTS/DIR-880L/REVA/DIR-880L_REVA_FIRMWARE_PATCH_v1.20B01_I4HA_BETA.zip)
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 06, 2018, 07:26:46 AM
 :o Wow that was fast.

Any word on the 868L?  ???
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on September 06, 2018, 07:29:15 AM
Not yet. I had to create a separate dtrack this morning.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 06, 2018, 07:45:34 AM
 ;)
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 06, 2018, 11:01:23 AM
Wow, impressive response!  You guys rock!  :)

The client connected to my 880L bridge running 1.08WW firmware just got its IP address lease renewed properly for another 24 hours, so it appears 1.08WW firmware does not have the same issue as with 1.20B01_01_i3se_BETA firmware.

I'll go ahead and update this 880L to the new beta firmware, and report back in another 24 hours.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 06, 2018, 11:02:33 AM
 ;D
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 07, 2018, 04:43:29 PM
The client behind the 880L bridge running the new beta firmware suffered an unexpected malfunction and became unusable yesterday so had to be replaced, which reset the IP address renewal monitoring by several hours, though as of this afternoon, it looks like the replacement client got one successful IP address lease renewal behind the 880L bridge.

So far so good, and I can continue monitoring that client over the weekend via remote access.

I also rolled back the firmware in my 868L bridge to 1.12B04_WW, to see how it behaves compared to the 1.20B01_BETA firmware.  This is a longer term test, as it can take some 2 weeks before a client gets cut off from the internet by a 868L.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 07, 2018, 10:31:16 PM
 ;)
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 10, 2018, 10:36:47 AM
As of this morning (Monday 9/10), the single client behind the 880L bridge running the new beta firmware has again lost its IP address lease and internet access.

I was unable to remote access this client yesterday from home, and today the client shows an autoconfiguration IP address of 169.254.100.34.

The "internet global" LED on the 880L panel is solidly lit, but the 5G radio LED blinks slowly.

This 880L bridge still responds to dlinkrouter.local and I can access the configuration pages, so it is not hung, but the attached client has been cut off from the internet.

Attempts to renew the IP address lease for the client using "ipconfig /renew" result in this message:

"An error occurred while reading interface Ethernet : unable to contact your DHCP server.  Request has timed out".
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 10, 2018, 10:39:21 AM
Thanks for letting us know. Will have D-link review this.  :(
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on September 10, 2018, 10:52:11 AM
I updated the ticket/dtrack.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 10, 2018, 10:55:29 AM
I guess revert back to v1.08WW for now if you need the 880L to work in Bridge mode.  ???
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on September 10, 2018, 10:57:27 AM
Is there a way to test more than 1 client at the same time? I wonder if they drop at the same time or if it is random.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 10, 2018, 11:06:49 AM
I can add a second client behind the 880L bridge.

It appears a client gets dropped whenever its IP address lease expires and the auto-renewal fails.

I just got the client to regain a legit IP address, without power-cycling the 880L bridge:  I went into the 880L Wireless config page, clicked the Scan button and re-selected the same SSID.  The client received a 24-hour IP address lease and is back on the internet.  Also, "ipconfig /renew" works again.

Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 10, 2018, 01:36:39 PM
Second client has been added behind 880L bridge.  Will keep firmware at latest beta (from last week) for now.

I'll monitor both clients to see if they get cut off at the same time or individually based on their IP address lease expirations.

The first client IP lease will expire a few minutes past 11am tomorrow.  The second client IP lease will expire shortly before 1:30pm.  Will report back tomorrow.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on September 10, 2018, 01:37:26 PM
Thank you
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 11, 2018, 10:37:12 AM
Both clients got their IP leases renewed at the 12 hour mark (not sure why, as the leases were for 24 hours), so their internet connections through the 880L bridge are still good as of this morning.  Also, 5G radio LED on the 880L is solidly lit.

Will keep both clients connected to this 880L bridge for continued monitoring.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 11, 2018, 06:40:49 PM
Update: both clients behind the 880L bridge still have their IP address leases, but their internet connections are down.

Both clients are still a number of hours away from their current IP address leases expiring.  This looks like the connection breakages can occur before the IP lease expires.

The 880L bridge still responds to "dlinkrouter.local", and the 5G radio LED is solidly lit.  Just no internet for the two clients.  :(

Apparently clients behind the 880L bridge get internet connections for a day or two then they are cut off.

Meanwhile, the two 868L bridges (running 1.12 firmware) connected to the same 5GHz SSID are working fine.  I'm continuing to monitor these.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 11, 2018, 07:02:35 PM
I have just reverted the 880L to 1.08B06 BETA firmware.  Should I roll back to 1.04B04 firmware instead?
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 12, 2018, 06:32:49 AM
Let us know if B06 does the same time, hoping it doesn't.  ???
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 12, 2018, 10:45:30 AM
Both clients got cut off behind the 880L bridge running 1.08B06 BETA firmware.  This time the internet connections didn't make it to the 12 hour mark.   :(

I'm rolling firmware back to 1.08WWb04.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 12, 2018, 12:12:17 PM
Sounds like the bug came in on B06 then... :-\
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 13, 2018, 03:52:16 PM
Both clients behind the 880L bridge running 1.08WWb04 firmware have successfully renewed their IP address leases twice, with continued internet access.

These clients have stayed connected to the internet longer then when the 880L was running 1.08B06 BETA or 1.20B01 BETA firmware.

It may be a bit too early to tell, but it is beginning to look like the issue came in starting with the 1.08B06 BETA (2/28/2018) firmware...
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 13, 2018, 03:56:15 PM
Thanks for letting us know. Hope D-Link will correct this.  ;)
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on September 14, 2018, 07:18:42 AM
Engineers need you to answer the following questions:

Update information. We are building below test topology and checking this issue in our lab now.

Internet --- router )))bridge mode via 5G connection(((DIR-880L ---- Switch --- PCs

(Setup the router DHCP lease time to 60 minutes)


But we can't make sure this issue can be reproduce in my environment,
so in this time, please also help provide below information, if possible.

1.Please ask customer to enable syslog function of DIR-880L and dump the complete log for us.
2.Please provide the screenshot for DHCP server settings of wireless router.
3.When this problem happened, please modify PC's IP address from dynamic to static IP and check this PC can access to wireless router or not.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 14, 2018, 07:15:38 PM
In my current 880L bridge configuration, there is no Ethernet switch between the 880L and the PCs.  Both clients are directed cabled to the 880L LAN ports (1 & 2).

Questions: Can the syslog function send the log to a connected client?  I'm unfamiliar with how to enable this syslog feature so need some pointers.

Which 880L firmware should I run to get the log?  Choice of 1.08B06 BETA or latest 1.20B01 BETA.

Screenshot for DHCP server settings of the wireless router (Netgear R8000) will need to wait till some time next week.  I currently do not have admin rights nor physical access to that router (it's not in my lab).

After the DHCP failure, should I just change a client IP adresss manually to static IP in the 192.168.0.x range?

BTW, both clients behind the 880L bridge (with 1.08WWb04 firmware) have stayed connected to the internet for another 24 hours.   :)
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 14, 2018, 07:22:06 PM
Is Syslog seen in bridge mode? I don't remember seeing it.

You'll need to download a free syslog capture program from the web. I think syslogwatcher has a free one. Install this on your PC and point the 880L syslog feature to the PCs IP address and have the syslog capture program running. Let it collect everything up to when it fails. Save the log and send to D-Link. I presume you could use with B06 or v1.20 since they both are reproducing this.

IF help is needed let me know I can reproduce this as well. I have access to routers here. It was failing while my current D-Link COVR router.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 18, 2018, 10:09:00 AM
The 2 clients behind the 880L bridge running 1.08WWb04 firmware continue to have proper internet connections.  It's been 4+ days and counting.

I'm hesitant to change 880L firmware to 1.20 Beta again just for troubleshooting, as I can't afford too much more down time with these 2 clients.  Also, there seems to be no free version of syslogwatcher, at least not without jumping through some hoops.

All indications point to this issue having surfaced with 1.08B06_BETA firmware, and continuing with 1.20B01_BETA.

Can D-Link support a syslog server?  I can point the 880L bridge to such a server, assuming this can work through the NAT of the Netgear wireless router..
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 18, 2018, 10:22:36 AM
Most syslog captures are done with a local PC. Not sure if it can go over the WAN side...
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on September 19, 2018, 09:47:35 AM
Our group in Taiwan verified this issue in the 1.08 firmware but with 1.20 they are not having any issues. They are continuing to test.

I will let them know you will not have access to the router.

Do you know what firmware is on the Netgear R8000?  Did they change the lease time from the default setting?

The syslog "server" should be one of the computers connected to the 880.  Go here --> https://eu.dlink.com/uk/en/support/faq/routers/wireless-routers/dir-series/dir-878/how-to-check-system-log-for-router (https://eu.dlink.com/uk/en/support/faq/routers/wireless-routers/dir-series/dir-878/how-to-check-system-log-for-router) and scroll to Method 2. This is for a router but the setup should be similar.

Unfortunately most "free" syslog servers require registration which is annoying.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 19, 2018, 10:55:59 AM
I think I still have the one sent to me by someone from the forums a few years ago. I'll have a look and see if I still have it.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 20, 2018, 04:45:01 PM
The Netgear R8000 router is running firmware V1.0.2.44_1.0.96.

I now have access to the admin page of this router.  The LAN side DHCP server feature does not have a setting for the IP address lease time.  It does however support address reservation, and there are currently none.  This is a consumer grade router.

The 2 clients behind the 880L bridge are still working fine, and it's been nearly a week now.  The multiple clients behind the two 868L bridges are also OK.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 26, 2018, 07:18:22 AM
If help is needed here I can help collect syslogs if needed. Though my 880L is running AP mode for my NESTs that won't connect to some substandard MESH system I've been forced to use.  :o
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on September 26, 2018, 07:25:18 AM
I just got DIR-880 BETA firmware to try scan.

ftp://FTP2.DLINK.COM/PRODUCTS/DIR-880L/REVA/DIR-880L_REVA_FIRMWARE_v1.20B02_BETA.zip (ftp://FTP2.DLINK.COM/PRODUCTS/DIR-880L/REVA/DIR-880L_REVA_FIRMWARE_v1.20B02_BETA.zip)


Though my 880L is running AP mode for my NESTs that won't connect to some substandard MESH system I've been forced to use.

LMAO
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 27, 2018, 01:52:13 PM
Thanks, GreenBay42!

My 880L bridge is currently running 1.08WWB04 firmware, and so far neither client has suffered a disconnect from internet.   :D

Can I just flash this new BETA 1.02 firmware without going through a middle firmware first?

Alos, if I enable syslogging on one of the connected clients, if that client loses ifs IP address lease, the logging would stop, right?  Or do I need to set up the syslogging client with a static IP?  Thanks.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 27, 2018, 01:55:14 PM
The middle has to be applied first then the v1.20 version...I'll load this up on mine since the 880L I have is now free for other use.  ;)
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 27, 2018, 03:01:23 PM
OK, I got this latest 1.20 firmware installed into my DIR-880L bridge, one client on static IP running Kiwi Syslog service, and the 880L logging enabled to this client.  No messages logged from the DIR-880L bridge so far.

The other client on DHCP lease has a 24-hour IP address lease as of a few minutes ago.  Will monitor this client closely.   ;)
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 27, 2018, 03:54:33 PM
Ok, mines loaded too. Though not capturing any syslogs. 1 Windows PC and 1 Mac Mini wired to the back of the 880L.  ;D
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 28, 2018, 10:03:33 AM
As of this morning, both clients behind the 880L bridge running the latest 1.20 beta firmware have been cut off from the internet.  The client on DHCP lost its IP address lease.  The other client on static IP running syslog server also cannot access the internet.  The 5G radio LED is slow blinking.

The syslog server captured only a few log messages.  I have taken a screen image but don't know how to attach it to this message.

It seems like with 1.20 beta firmware, the 5GHz link between the 880L bridge and the Netgear R8000 router becomes broken after a while.  With 1.08WWB04 firmware, the clients can remain connected to the internet for many days.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 28, 2018, 10:14:19 AM
Can you post your captured log file to something like a file share cloud service like dropbox or googledocs?
Can you connect the 880L to a 2.4Ghz wifi source to see if the same thing happens?
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 28, 2018, 10:38:22 AM
Screen shot of log messages posted to Dropbox:

https://www.dropbox.com/s/2imxxk5gthr44sb/DIR-880L_Bridge_Syslog_2018-0928.png?dl=0

I just reconfigured the 880L bridge to link to the same Netgear router via 2.4GHz instead of 5GHz.  Both clients have regained internet access.  Will monitor whether the internet connections can be sustained.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 28, 2018, 10:40:24 AM
Does this syslog program export the capture to file?
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 28, 2018, 10:59:12 AM
The free Kiwi syslog server appears to have no export direct to file option, though it supports copying of selected messages to clipboard.  I've saved a text file of all the messages logged so far:

https://www.dropbox.com/s/xlxfm121wyas0m7/DIR-880L_Bridge_Syslog_2018-0928.txt?dl=0

A few more messages have shown up since reconfiguration to 2.4GHz band.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 28, 2018, 11:03:36 AM
Is this the entire capture since you started this program?
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 28, 2018, 01:03:11 PM
Oops, I have the wrong IP address entered into Kiwi syslog.  DIR-880L bridge IP address is 192.168.1.6 whereas the DHCP client IP address is 192.168.1.16.

Corrected the IP address for syslog capture and waiting for more messages to get logged.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 28, 2018, 01:07:16 PM
You'll need to switch back to 5Ghz and start a new capture...
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 28, 2018, 02:01:50 PM
OK, just switched the 880L bridge back to 5GHz and started capturing...
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 28, 2018, 02:47:19 PM
Ok. I checked mine, still have Internet access and it's connected to 2.4Ghz since yesterday.  ;) Will check again this weekend.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on September 29, 2018, 05:42:43 PM
Well, both clients lost their internet connections again in less than 24 hours.   :(

I just reconfigured the 880L bridge to 2.4GHz band again to compare with 5GHz band.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on September 29, 2018, 06:32:37 PM
Mine still up and running on 2.4Ghz. Hmmm. Wondering if there is a problem with the 5ghz radio...
Were you able to capture the syslog while on 5Ghz?
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 01, 2018, 08:04:39 AM
As of this morning, both clients behind the DIR-880L bridge running 2.4GHz link are still remote accessible.

It is really beginning to look like the issue is specific to the 5GHz band.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 01, 2018, 08:45:15 AM
I think so as well...Mine worked all weekend with mine connected on 2.4Ghz.

Are you able to still capture syslogs and the event on 5Ghz?
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 01, 2018, 12:59:47 PM
Here's a link to the syslog capture.

https://www.dropbox.com/s/21ahud5qi9tllo8/DIR-880L_Bridge_Syslog_2018-1001.txt?dl=0

It covers the failed state at 5GHz on 9/29 followed by a reconfiguration to 2.4GHz.  The two clients have had internet connections continuously since then.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 01, 2018, 01:04:28 PM
Sure doesn't show much. That's all in the syslog capture program?
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 01, 2018, 04:05:19 PM
My thoughts exactly.  I didn't tweak any settings for the Kiwi syslog server.  Is that necessary?
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 01, 2018, 04:06:41 PM
No idea. Maybe someone at D-Link can see if there are any other settings needed. Logs seems too sparse for any real information.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 01, 2018, 04:23:19 PM
Send me your email address in a PM. I found the syslog server app i got a few years back. I believe it might have better capture abilities.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 02, 2018, 07:13:26 PM
PM sent.  Since 2.4GHz seems to be working, I've reconfigured back to 5GHz and restarted the syslogging.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 03, 2018, 07:12:37 AM
Same here, 2.4Ghz is working well.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 04, 2018, 11:17:08 AM
The DHCP client behind the 880L bridge in 5GHz got its IP address lease renewed once.  Exactly one relevant message was captured into syslog:

DHCP: Client receive ACK from 192.168.1.1, IP=192.168.1.28, Lease time=86400

Previously, when a DHCP client got cut off from the internet, it was often at the 12-hour mark when the client attempted to renew its IP lease but got no response from the DHCP server.  No messages were captured into syslog for this failure, as far as I could tell.

Yesterday the 880L went into a mode where no syslog messages were being seen, so I rebooted the unit.  I thought it was because Windows got upgraded for the client running Kiwi syslog server, but it turned out to be the 880L not sending out syslog messages even when configured to do so.


Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 04, 2018, 11:26:41 AM
And all of this is while connected on 5Ghz?

The DHCP client behind the 880L bridge in 5GHz got its IP address lease renewed once.  Exactly one relevant message was captured into syslog:

DHCP: Client receive ACK from 192.168.1.1, IP=192.168.1.28, Lease time=86400

Previously, when a DHCP client got cut off from the internet, it was often at the 12-hour mark when the client attempted to renew its IP lease but got no response from the DHCP server.  No messages were captured into syslog for this failure, as far as I could tell.

Yesterday the 880L went into a mode where no syslog messages were being seen, so I rebooted the unit.  I thought it was because Windows got upgraded for the client running Kiwi syslog server, but it turned out to be the 880L not sending out syslog messages even when configured to do so.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on October 04, 2018, 12:37:10 PM
I updated the DTrack with this latest information.

Furry are you seeing any issues when bridging to your 890L?
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 04, 2018, 12:55:22 PM
The 890L doesn't support bridging. Only AP mode.

My 880L is working fine on 2.4Ghz as of yesterday. I can't get it to connect or see the current 5Ghz router due to you know the bug found there.  ::)

I updated the DTrack with this latest information.

Furry are you seeing any issues when bridging to your 890L?
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on October 04, 2018, 01:02:37 PM
I know. You said you have the 880L bridging to the 890L in router or ap mode.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 04, 2018, 01:35:52 PM
The 880L is bridge to the COVR router on 2.4Ghz.
My 890L is in its box.  ;)
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 04, 2018, 01:45:59 PM
Yup!

I may have an opportunity to update the firmware for the Netgear router that my 880L bridges to over 5GHz.  Will see if that changes any behavior.

The 880L bridge has not failed over 5GHz since yesterday's reboot.  I'm still waiting for the failure to hit the connected clients.

And all of this is while connected on 5Ghz?

The DHCP client behind the 880L bridge in 5GHz got its IP address lease renewed once.  Exactly one relevant message was captured into syslog:

DHCP: Client receive ACK from 192.168.1.1, IP=192.168.1.28, Lease time=86400

Previously, when a DHCP client got cut off from the internet, it was often at the 12-hour mark when the client attempted to renew its IP lease but got no response from the DHCP server.  No messages were captured into syslog for this failure, as far as I could tell.

Yesterday the 880L went into a mode where no syslog messages were being seen, so I rebooted the unit.  I thought it was because Windows got upgraded for the client running Kiwi syslog server, but it turned out to be the 880L not sending out syslog messages even when configured to do so.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 04, 2018, 03:39:37 PM
This issue now looks like a 5GHz linkage failure between 880L bridge and the host wireless router (Netgear R8000), as opposed to a DHCP IP address renewal failure.  5GHz linkage breakdown explains all the symptoms seen on the clients attached to the 880L.

Unfortunately, neither this 880L bridge nor the host router can be relocated to be closer to each other.

I can look into giving the 880L bridge an IP address reservation in the Netgear router.  There are two DIR-868L (1.12B04_WW firmware) in bridge mode also linked to this router over 5GHz and clients attached to these 868L can access internet continuously.

Some time soon I'll need to roll the 880L firmware back to 1.08B04_WW to maintain internet access for connected clients, or move the clients to the 868L bridges.  In other words, my ability to assist with troubleshooting this 880L issue may be ending...

BTW, does the DIR-895L/R officially support bridge mode?  Just curious...
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 04, 2018, 03:45:24 PM
Well my 880L was with in 20 feet almost line of site and I was able to reproduce that issue on 5Ghz. 2.4Ghz is still running fine.
Yes the 895L supports wireless bridging:
http://forums.dlink.com/index.php?topic=50738.0 (http://forums.dlink.com/index.php?topic=50738.0)
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on October 05, 2018, 07:48:49 AM
I suggest downgrading the firmware back to 1.08 on the 880L since it was stable and worked for you. Most of the security fixes in later firmware versions are for when the 880L is in router or AP mode.

The DIR-895L will probably not perform any better to be honest.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 05, 2018, 08:22:34 AM
Has D-Link been able to reproduce the 5Ghz issue though? 2.4ghz is working for me. Of course I can't test 5Ghz currently.  ::)

Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 05, 2018, 02:07:57 PM
Thanks.  I have downgraded the 880L firmware back to 1.08B04.

I also updated the Netgear R8000 router firmware to latest, and created IP address reservations for the 880L bridge and the two 868L bridges.  All three D-Link bridges are connected to the same 5GHz band of this Netgear router.

Hopefully the clients behind these bridges can stay connected to the internet.

Thanks for the comment on the DIR-895L.

I suggest downgrading the firmware back to 1.08 on the 880L since it was stable and worked for you. Most of the security fixes in later firmware versions are for when the 880L is in router or AP mode.

The DIR-895L will probably not perform any better to be honest.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 09, 2018, 10:57:50 AM
The past 24 hours has not been good.

My 880L bridge (1.08B04 WW) and one of two 868L bridges (1.12B04 WW) lost their 5GHz connections to the Netgear router.  That's 2 out of 3 bridges down.  The 880L still responded to dlinkrouter.local so I was able to invoke the reboot option.  The 868L bridge appears completely unresponsive (including pings) and had to be power-cycled.

I noticed the 880L has an Auto Reboot option that can be set to daily, so I may try that.  The 868L has a "Use Unicasting" (compatibility for some DHCP Servers) option but not sure whether it has any effect in bridge mode.

Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 09, 2018, 12:56:27 PM
Would need to try a different host router to see if the problem appears...
Possible that having 3 bridges connected maybe too much for the NG router.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 09, 2018, 03:41:18 PM
Well I guess 5 days later maybe a time frame for failure. at least for me. I came home today and found that I had no Internet access with my two PCs connected to the 880L bridged to the COVR router. I connected one PC back to the main LAN network and got Internet access. I was able to access the 880L web page while connected to it, I could not ping the main router though. After rebooting the 880L, I now have Internet access thru it. So it seems 2.4Ghz is also affected as well. :-\
Current Firmware Version:
1.20, Tue 24 Apr 2018
Current Firmware Date:
2018-04-24 17:27:00


The 880L is bridge to the COVR router on 2.4Ghz.
My 890L is in its box.  ;)
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on October 10, 2018, 07:36:14 AM
Has D-Link been able to reproduce the 5Ghz issue though?

They did but with the BETA firmware probably on page 1 of this thread fixed it for them.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on October 10, 2018, 07:43:57 AM
If you statically assign the clients connected to the 880L do they drop Internet connectivity?
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 10, 2018, 07:55:10 AM
Please ask them if they can reproduce on 2.4Ghz as well.
I presume setting static one the client may not work since the client has a IP address. It's just not getting internet access. I can ping the client and 880L, I can't ping the main router at .0.1 nor anything beyond that...

I'll load up the beta and see. However I can't fully test as the current host router doesn't work on 5Ghz with the 880L.  :-\ Ah Hemm.  ::) I guess I'll drag out another router and set up for 5Ghz so I can test this out fully.  ::) The family loves me when I reconfigure the network.  :-X
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on October 10, 2018, 07:59:58 AM
You are the only one having 5ghz issues on the covr.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 10, 2018, 04:34:00 PM
Apparently.  ::) I do see my Apple devices connect to 5Ghz. However any wireless bridge or extender I have will not as they don't see the 5Ghz SSID from the COVR.

I'm planning on putting on my 890L here soon as everyone can give me a few minutes to swap out. Then i'll connect the 880L up and see what happens. I do have the beta 02 build loaded on it.


You are the only one having 5ghz issues on the covr.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 10, 2018, 05:18:52 PM
Ok, 890L online and 880L connected to 5Ghz.2 radio as indicated by the connection tile on the 890L. I have syslog running as well.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 11, 2018, 06:57:54 AM
With my 880L bridge, a 5GHz link to the router craps out much sooner than a 2.4GHz link.

Now that I have admin access to the Netgear R8000 router that the 880L & 868L bridges link to, I can see that the 880L & its connected clients no longer show up on the connected devices list.  Whenever the 880L still responded to dlinkrouter.local from a static IP client, I could reboot the 880L (without power cycling) and the 5GHz link would be re-established and the connected clients would regain internet access.  Power cycling the 880L also worked.

Based on this, it would appear it is NOT the Netgear R8000 router that is malfunctioning.  This router has up to 20 clients connected to it over 2.4GHz & 5GHz and there have been zero reports of internet access problems with such directly connected clients.  Also, judging by the way a 880L (or 868L) bridge drops off the router's connected device list, I'd say this issue is localized to the D-Link HW.  Also, it does not seem to matter whether a client is set to use DHCP or given a static IP.  I have one of each connected to the 880L and they both get cut off from the internet the same way.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 11, 2018, 07:12:54 AM
Thanks for posting this info. Ya, I believe something is going on with the 880L in bridge mode. I presume I'll see something crop up soon. I'll post what I find.  ;)
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 11, 2018, 11:37:25 AM
Thanks, FurryNutz!

As of this morning, the 880L bridge has choked up again.  The 5GHz LED is slow blinking.  It still responds to pings and the admin pages come up, but the 2 clients have no internet access.  The 880L bridge and the 2 clients no longer appear on the connected devices list of the Netgear router.

This really looks like a 5GHz link loss between the 880L bridge and the Netgear router.  Both boxes are still "running", but the 5GHz link between them is broken.  Even having assigned an IP address reservation for the 880L bridge apparently has not helped.

BTW, the two 868L bridges are still doing OK linked to the same Netgear router.

Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 11, 2018, 12:12:12 PM
Some more info.  The DHCP client behind the 880L bridge lost its internet connection well before its IP address lease expiration time.  I think this is another indication of the 5GHz link being broken as opposed to an IP address renewal failure as originally thought.  Even the other client on static IP could not get to the internet.

I just logged into the 880L admin page, initiated a reboot, and both clients have their internet connections restored.  5G LED is back to solidly lit.

My 880L bridge has been rolled back to 1.08B04 WW firmware for a while, BTW.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 11, 2018, 12:19:56 PM
What happens if you roll back to v1.07?

There any chance you can close the distance between the 880L and NG router?

Some more info.  The DHCP client behind the 880L bridge lost its internet connection well before its IP address lease expiration time.  I think this is another indication of the 5GHz link being broken as opposed to an IP address renewal failure as originally thought.  Even the other client on static IP could not get to the internet.

I just logged into the 880L admin page, initiated a reboot, and both clients have their internet connections restored.  5G LED is back to solidly lit.

My 880L bridge has been rolled back to 1.08B04 WW firmware for a while, BTW.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 11, 2018, 03:59:26 PM
5Ghz is still going here today. Will keep checking it.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 11, 2018, 04:16:49 PM
Unfortunately the Netgear router cannot be moved as it is in the "other" lab and I have no access.

I just briefly tried 1.07 firmware with the 880L but the client downstream throughput went from the usual ~100Mbps to less than 1Mbps :(, so I quickly flashed the unit back to 1.08 firmware.

As an experiment, I have moved the 880L bridge to another corner of my lab.  It now sits over 10 feet away from a 868L bridge.  Previously the 880L and 868L sat next to each other on the same shelf.  This 880L now has just one client connected and will monitor how long its internet connection lasts.

What happens if you roll back to v1.07?

There any chance you can close the distance between the 880L and NG router?

Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 11, 2018, 04:30:56 PM
Ok, wow, didn't know v1.07 was that bad.

I was referring to moving the 880L closer to the NG router. However let us know how it goes with the new position. Ya, devices should not be close to each other. 3-6 feet minimum on these devices.  ;)

Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 11, 2018, 04:43:16 PM
Can you let me know what I'm looking at here?
10/11/2018 8:30:09 AM [404616] From: (192.168.0.88) Fac:0 Sev:0 Msg >>> Got new client [78:D2:94:45:3F:64] associated from BAND5G-1.1 (5 Ghz)
10/11/2018 8:32:37 AM [404617] From: (192.168.0.88) Fac:0 Sev:0 Msg >>> Got new client [78:D2:94:45:3F:63] associated from BAND5G-1.1 (5 Ghz)
10/11/2018 8:35:42 AM [404618] From: (192.168.0.88) Fac:0 Sev:0 Msg >>> Got new client [78:D2:94:45:3F:64] associated from BAND5G-1.1 (5 Ghz)
10/11/2018 9:05:38 AM [404619] From: (192.168.0.88) Fac:0 Sev:0 Msg >>> Got new client [78:D2:94:45:3F:64] associated from BAND5G-1.1 (5 Ghz)
10/11/2018 9:05:49 AM [404620] From: (192.168.0.88) Fac:0 Sev:0 Msg >>> Got new client [90:8D:78:4C:17:EC] associated from BAND5G-1.1 (5 Ghz)
10/11/2018 12:48:37 PM [404621] From: (192.168.0.88) Fac:0 Sev:0 Msg >>> Got new client [78:D2:94:45:3F:64] associated from BAND5G-1.1 (5 Ghz)
10/11/2018 12:59:04 PM [404622] From: (192.168.0.88) Fac:0 Sev:0 Msg >>> Got new client [90:8D:78:4C:17:EA] associated from BAND5G-1.1 (5 Ghz)
10/11/2018 5:01:00 PM [404623] From: (192.168.0.88) Fac:0 Sev:0 Msg >>> SendResponses: No active interface 00055008 to send: 00055008 10    4 shareport.local. Addr 169.254.7.55
10/11/2018 5:26:14 PM [404624] From: (192.168.0.88) Fac:0 Sev:0 Msg >>> Got new client [78:D2:94:45:3F:63] associated from BAND5G-1.1 (5 Ghz)

This is log collected from 880L in bridge mode connected to DIR-890L in router mode. I don't see those MAC listed on my PC, Mac Mini or on the 880L/890L.  :o

UPDATE:
I believe this may have been due to a extender running with the DIR-890L which I forgot is not compatible with Smart Connect enabled either on the 890L or the Extender at the same time. I found that while I was doing some phone stuff this evening, the phone and my mac book disconnected from the router. Also my 3 cameras disconnected. Started having problems keeping these devices connected to the 890L. After fiddling with the system for too long, I remembered that this extender I have can't be used with Smart Connect enabled on a D-Link router. Or if SC is enabled on the router, the extender can't have it enabled there.  ::) So I removed the extender and put up a older DIR router in AP mode LAN to LAN for service at that end of the house till this 880L test is over. The 880L is connected to the 890L and will monitor it's operation over the weekend. Everything else is connected as well and seems stable now.  :)

You are the only one having 5ghz issues on the covr.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 12, 2018, 10:31:11 AM
I picked up another 868L (FW=1.12) and set it up as a bridge at home last night, linking to my Netgear Orbi router in an adjacent room.  I connected one PC client to the 868L, confirmed internet access and left it idling in Windows overnight.  This morning, the client no longer has a valid IP address, and the Orbi router no longer shows the 868L nor the attached client in its devices list.

To get things going again, I changed the client to a static IP address, brought up the 868L admin page, initiated a reboot, changed the client back to using DHCP and its internet access was restored.

D-Link routers running as bridges linking to Netgear routers over 5GHz don't seem able to work consistently...  :(

The 880L and 2 x 868L bridges in my lab are still working since separating the 880L and 868L bridges yesterday, though it's been less than 24 hours.

Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 12, 2018, 11:10:44 AM
I'm wondering the same thing here. NG and D-Link don't seem to work well. I'll find out this weekend if the 880L and a 890L do same thing or not.  :-\
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 13, 2018, 03:07:30 PM
880L is still running today. Even after I did a 5pm evening reboot of the ISP modem and DIR-890L as I wanted to check speeds on the DIR router. I came up today and the 880L is still connected to the 5Ghz radio and I have Internet access thru it still.  ;)
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on October 15, 2018, 09:09:04 AM
I wonder if it is an idle thing. Can you set a continuous ping overnight on one of the clients and see if it drops.

To do a continuous ping, click Start and type CMD in the box.

At the prompt, ping the IP address of the NG router and add a -T at the end. For example,  ping 192.168.0.1 -t

The DTrack team responded:

After checked with R&D, as this log, "DHCP: Client receive ACK from 192.168.1.1, IP=192.168.1.28, Lease time=86400," it showed that DIR-880L had got DHCP IP from root AP. Do not know how about the test result for FW 1.20b02?

Another, below test topology working in my environment over one week, but we still can't duplicate this issue.

Internet --- DIR-890L )))bridge mode via 5G connection(((DIR-880L ---- PC
(Setup DIR-890L DHCP lease time to 30 minutes)

By the way, I just got the Netgear R8000 device now, please ask customer to provide the config file and FW version for us to verify.
I will try to test this wireless connection between R8000 with DIR-880.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 15, 2018, 10:21:33 AM
As of this morning, the 880L bridge and the two 868L bridges are still connected to the Netgear R8000 router over 5GHz.

I no longer believe the issue is related to DHCP failure, but rather a 5GHz link drop between the router and a D-Link bridge.  The DHCP failure at a client is simply the result of the 5GHz link remaining broken.  Even a client on static IP will lose internet connection once the 5GHz link drops.  That "DHCP: Client receive ACK from 192.168.1.1" message indicated a successful IP address renewal for a client, but once the 5GHz link gets broken, the client is unable to obtain an IP address renewal.  Also, I have seen a client with static IP getting cut off within an hour of coming online, so the failure really has nothing to do with DHCP.

In most cases, the 880L (and even the 868L) bridge is still responsive (i.e. not hung) to communicating with an attached client, but the 5GHz connection to the router is down.  On the status page of the 868L bridge at home, I saw the wireless LAN connection status displayed as Disconnected.  After either rebooting or connecting to a different router SSID then back, the 5GHz connection will work again, at least for a while.

Let me see if I can get some screen shots off the Netgear R8000 router.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 15, 2018, 10:39:02 AM
Attached are several screen shots taken from the Netgear R8000 router that my D-Link 880L & 868L bridges connect to.

https://www.dropbox.com/s/d3wz08nntdmqwc4/Netgear_R8000_Screenshots_2018-1015.zip?dl=0
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 15, 2018, 10:52:19 AM
If you can, please save off a router config to file and email that to me. Before saving off the file, removing any router log in PW or set "password" then save off. You can change the admin log in back after the file is saved. I'll send this to D-Link.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 15, 2018, 03:34:12 PM
I won't be able to alter admin or WiFi passwords or any configuration change to that Netgear router until possibly end of the week.  There are clients under continuous testing going through that router that I cannot disrupt.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 15, 2018, 03:44:31 PM
Ok, hopefully they can do something with the images you posted. The configuration file would be best. Let see if they can reproduce with out for for now.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on October 16, 2018, 07:28:14 AM
How many total clients are going through the netgear router on the 5 GHz?

I gave DTrack the images but they still would like the config file if possible.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 16, 2018, 05:00:10 PM
There are typically 15-20 clients connected to that Netgear router during the day, including several mobile phones.  The clients are not all continuously active though.  The ones in my lab are idling in Windows most of the time.

I used the "Site Survey" feature of 868L to take a signal strength reading of the router 5GHz signals in my lab where the D-Link bridges are located.  The ch 36 signal is in the -63dBm ballpark, and the ch 153 signal is around -51dBm.  Not the strongest of signals, but considering there are 2 walls separating the NG router and my D-Link bridges, it's not too bad.  I also used inSSIDer Lite to gauge co-channel interference and overlapped channels.

Today I also changed the Netgear router 5GHz-1 radio from ch 44 to 36, and switched one of the two 868L bridges to connect to ch 153 instead of ch 36.  Will see if there is any change in wireless link drop behavior.  There has been no link loss observed from any of the three D-Link bridges since last Friday.  Not sure what led to the better behavior, though.

Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on October 18, 2018, 07:48:32 AM
DTrack team has a netgear R8000 and they said they do see some connectivity issues so it may be some issue with the 2 devices working together. They are testing further this week with the R&D team.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 18, 2018, 09:43:31 AM
I've saved a .CFG file for the Netgear R8000 router, but with admin & WiFi passwords intact, since I cannot change these without disrupting ongoing client testing.

Please PM me the email address to send this config file to.

If you can, please save off a router config to file and email that to me. Before saving off the file, removing any router log in PW or set "password" then save off. You can change the admin log in back after the file is saved. I'll send this to D-Link.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 18, 2018, 09:51:52 AM
Thanks for the update!  Interoperability issues between Netgear R8000 and DIR-880L (and DIR-868L) is a good description of the problem.

Signal strength in the -60dBm ballpark for my D-Link bridges isn't exactly great, but is enough to sustain ~100Mbps downlink speed for clients attached to the 880L bridge.  I think the Comcast Business internet service in use maxes out at about 120Mbps downlink, so the clients are not seeing much speed loss over the 5GHz wireless link.

Since I really can't relocate that Netgear router sitting in the other lab, would it make sense to look into outfitting the 880L with higher gain 5GHz antennas?

DTrack team has a netgear R8000 and they said they do see some connectivity issues so it may be some issue with the 2 devices working together. They are testing further this week with the R&D team.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 18, 2018, 09:58:12 AM
"Possible that the distance is too far and the signal is dropped. With two walls and 50 feet, 5Ghz is effected by building materials."

However lets see if D-Link can find the main problem with between the two. I know that for mine, the 880L and 890L work. So there many an issue with the R8000.

Any chance you can swap in the 880L as the main router and use the R8000 was a bridge?
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on October 18, 2018, 10:04:34 AM
I sent you a pm with my email address.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 18, 2018, 10:58:01 AM
Just emailed you a .CFG file from my Netgear R8000 router.

I sent you a pm with my email address.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 18, 2018, 10:58:49 AM
I don't think the R8000 supports bridge.  Also, R8000 has two 5GHz radios but DIR-880L has one.

"Possible that the distance is too far and the signal is dropped. With two walls and 50 feet, 5Ghz is effected by building materials."

However lets see if D-Link can find the main problem with between the two. I know that for mine, the 880L and 890L work. So there many an issue with the R8000.

Any chance you can swap in the 880L as the main router and use the R8000 was a bridge?
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on October 18, 2018, 11:04:40 AM
I just sent the file to dtrack. Hopefully they can figure out what the issue is.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 18, 2018, 11:33:58 AM
Have you attempted to get the 880L to connect to either 5Ghz radio. This is one thing I wish the 880L UI had in this scan results so you can see which radio and channels that a wireless source is using.  >:( Makes it hard to connect to Tri band routers with out some form of help on this.  ::)

I presume either 5Ghz radio on the R8000 will probably exhibit same behavior though. Just a thought.

I don't think the R8000 supports bridge.  Also, R8000 has two 5GHz radios but DIR-880L has one.

"Possible that the distance is too far and the signal is dropped. With two walls and 50 feet, 5Ghz is effected by building materials."

However lets see if D-Link can find the main problem with between the two. I know that for mine, the 880L and 890L work. So there many an issue with the R8000.

Any chance you can swap in the 880L as the main router and use the R8000 was a bridge?
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 18, 2018, 12:49:05 PM
I did try linking over ch 153 briefly earlier this week.  The link failure rate appears to have gone down noticeably ever since I moved the 880L away from one of the 868L bridges.  I just switched the 880L from ch 36 to ch 153 again for some test time with the higher 5GHz radio.

Totally agree on the dumbed down WiFi scanner UI in the 880L.  Nowhere near as useful as the one in the 868L.


Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 18, 2018, 01:44:46 PM
Ya, ever since D-Link went to this new UI, we've really missed the wifi status and information seen from days of old UI.  :-\
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on October 18, 2018, 02:16:41 PM
Ya, ever since D-Link went to this new UI, we've really missed the wifi status and information seen from days of old UI.  :-\

Agreed!
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 18, 2018, 02:22:09 PM
Something I'd like to see forth coming in the new AX stuff.  ;) Would be nice to know what devices are connected to which radio, mode and channel and speed devices are connected at. Man I miss those features.  :-\
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on October 18, 2018, 02:57:25 PM
I miss a lot of features from our old routers.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on October 18, 2018, 05:31:24 PM
Some consumer mesh networking products collapse 2.4GHz and 5GHz into a single SSID, so it can get tricky to tell whether a given SSID is on 2.4GHz or 5GHz, as it can be both, especially with dual-band capable clients!  The backhaul channel is normally hidden, but with something like inSSIDer they show up on the list.

BTW, I've had no luck getting a 868L bridge to remain connected to my Netgear Orbi RBR50 router at home (through just one stucco wall, <10 foot separation).  The 868L appears to get confused about whether to talk 2.4GHz or 5GHz for this home SSID (I've seen the wireless channel jump back and forth between ch 4 and ch 36 as displayed in the 868L Status page), and the wireless link typically does not survive overnight: Connection Status becomes Disconnected, Channel becomes N/A.  I've pretty much given up on this, considering that 868L is already EOL.

Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on October 19, 2018, 07:17:05 AM
Since Smart Connect first came out, the 880L was the first to get this for D-Link. Ya, it combines two and 3 radio SSIDs into one, thus automatically taking control of how devices get connected to which radio. This is a Broadcom feature. Normally on non MESH routers there is no back haul of course.

The handling of how devices get connected in MESH is mostly done by the MESH and Smart Connect system. It's really not the client devices fault for getting confused.

I've been using my 868L recently however with one particular COVR MESH system I have, any of my wireless bridged will not connect to the 5Ghz radio. For some reason this particular MESH system is using a DFS channel 64 which I presume shouldn't be used and since most of my bridges are of older generation, they never supported this DFS channel, thus they won't connect.

The 868L should connect to the Orbi. Disable MIMO and Daisy Chain on the Orbi and try. You can test this also by turning down either the 2.4Ghz or 5Ghz radio power on the Orbi system to 25% and leave the other radio at 100% and see if this changes anything.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on November 01, 2018, 07:04:06 AM
OK. Engineers have confirmed an issue with the 880L in bridge mode with the netgear router. They will work on a firmware fix but the bad news is since this router is discontinued and getting vendor support can be difficult, they said a new firmware may take 1-2 months  ::) 
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on November 01, 2018, 07:10:12 AM
Great.

Just curious, do the engineers have any work around solutions by chance to help keep the 880L from failing or is this just a hard failure that needs to be fixed by the vendor?

OK. Engineers have confirmed an issue with the 880L in bridge mode with the netgear router. They will work on a firmware fix but the bad news is since this router is discontinued and getting vendor support can be difficult, they said a new firmware may take 1-2 months  ::)
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on November 01, 2018, 08:48:14 AM
It seems to be some quirk with the netgear router and 880L that the vendor needs to fix. Not sure what the workaround would be. Did it perform better with 2.4Ghz?
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on January 02, 2019, 10:25:55 AM
Happy New Year!

My company had a holiday shutdown between Xmas and New Year, and I did a little experiment in my lab:  All D-Link wireless bridges except for one DIR-868L was powered down.  This morning coming back into the lab, the lone 868L bridge (FW=1.12) was still fully functional and downstream clients all have internet access!

I'm starting to wonder if my bridge issues have to do with multiple units linking to the same Netgear router.  The bridges have been sitting about 12 feet from each other, and their behavior have generally improved over the time when I had a 880L & a 868L spaced less than 2 feet apart.

There was very little network traffic in the lab during the shutdown, so it's hard to tell whether it was the reduced traffic or lack of multiple D-Link bridges talking to the same router that lead to the better bridging behavior.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on January 02, 2019, 11:04:49 AM
Any chance you can test with the 880L alone?

Happy New Year!

My company had a holiday shutdown between Xmas and New Year, and I did a little experiment in my lab:  All D-Link wireless bridges except for one DIR-868L was powered down.  This morning coming back into the lab, the lone 868L bridge (FW=1.12) was still fully functional and downstream clients all have internet access!

I'm starting to wonder if my bridge issues have to do with multiple units linking to the same Netgear router.  The bridges have been sitting about 12 feet from each other, and their behavior have generally improved over the time when I had a 880L & a 868L spaced less than 2 feet apart.

There was very little network traffic in the lab during the shutdown, so it's hard to tell whether it was the reduced traffic or lack of multiple D-Link bridges talking to the same router that lead to the better bridging behavior.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on January 02, 2019, 05:55:23 PM
Any chance you can test with the 880L alone?

Will try that at the end of the week.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on January 02, 2019, 07:05:51 PM
 ;)
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on January 04, 2019, 07:03:49 PM
OK, DIR-880L has been set up as the only bridge in the lab.  All downstream clients have normal internet access.

Will see how long this setup can stay working...
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on January 05, 2019, 01:04:41 PM
 ;)
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on January 25, 2019, 10:25:04 AM
The 880L bridge stayed working until 2 days ago, when all downstream clients got cut off from internet.  The 880L web interface was still responsive, but pings to the Netgear router were not returned.  I was able to restore operation by re-selecting the 5GHz SSID already in use then clicking save.  There was no need to power cycle the unit.

So it looks like this 880L unit worked in bridge mode for just under 3 weeks.  One day before I noticed the clients had no internet access, the box was still working normally as far as I could tell.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on January 29, 2019, 02:22:15 PM
So what was the configuration used and what have you changed since posting last?
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on February 02, 2019, 08:41:58 PM
The change was all the DiR-868L bridges in the lab being powered down, leaving just a single DIR-880L bridge connecting over 5GHz to the Netgear router in the other lab.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on February 16, 2019, 11:56:41 AM
Sounds like the 880L is failing after a long period of time.  :-\
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: scan80269 on February 19, 2019, 09:25:32 PM
Yes, the 880L in bridge mode seems to work for a bunch of days before failing.  Unit is not hung even after downstream clients have been cut off from internet.
 Re-selecting the same 5GHz SSID via the webpage (from any client) will restore internet access to the clients for another bunch of days.  Mean time between failure is roughly 2-3 weeks.

This almost looks like a slow memory leak issue with the firmware ...  :-\
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on February 20, 2019, 06:00:48 AM
Only other test would be to try a different version of FW.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: Tario70 on March 16, 2019, 10:38:09 AM
I'm having a similar issue with the DIR-880L (latest firmware).

Using this to connect to a DIR-895L as a bridge & after a day all clients connected to the DIR-880L will return an APIPA address. I then have to manually connect to the 880L & then if I scan the network I can reconnect & things start working again. A reboot tends to fix the issue as well.

I also have 2 other questions:

Once connected in bridge mode, due to having 2 dlink routers, I can no longer access the 880L's page. dlinkrouter.local opens my 895L page. Any way to access the 880L's page? I'm not seeing an IP address assigned in the 895L connected clients.

NTP doesn't appear to work while in bridge mode on the 880L either. Whether or not I use the dlink NTP server or input a manual NTP. Any suggestions?


Thanks!
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on March 16, 2019, 11:12:15 AM
What FW is loaded on the 895L?

I would try this, factory reset the 880L, downgrade to v1.08, factory reset once more then setup from scratch and configure Bridge mode.


I'm having a similar issue with the DIR-880L (latest firmware).

Using this to connect to a DIR-895L as a bridge & after a day all clients connected to the DIR-880L will return an APIPA address. I then have to manually connect to the 880L & then if I scan the network I can reconnect & things start working again. A reboot tends to fix the issue as well.

I also have 2 other questions:

Once connected in bridge mode, due to having 2 dlink routers, I can no longer access the 880L's page. dlinkrouter.local opens my 895L page. Any way to access the 880L's page? I'm not seeing an IP address assigned in the 895L connected clients.

NTP doesn't appear to work while in bridge mode on the 880L either. Whether or not I use the dlink NTP server or input a manual NTP. Any suggestions?


Thanks!
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: Tario70 on March 16, 2019, 12:47:14 PM
The DIR-895L is at firmware 1.21

I cannot downgrade the 880L or it will become useless to me. I need the DLNA fix that was in v1.20B01 at minimum. The 880L is currently at v1.20B02.

I can try another factory reset on the 880L & reset it up, but do you know how to access the router after connecting via bridge mode? dlinkrouter.local will just route to the 895L after connecting.

Thanks!
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on March 16, 2019, 01:12:55 PM
DLNA was not working in v1.08?

After you set up the 880L in bridge mode and it's connected to the 895L, look at the 895Ls connected clients list to see the IP address of the 880L connected there. You can access the 880L's web page in bridge mode using the DHCP IP address for it in a browser.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: Tario70 on March 16, 2019, 01:21:04 PM
Yep, if you look at the release notes for 1.20 build01 it shows a dlna fix. I originally bought the router to replace a DAP-1522. I had to stick with the 1522 because before the fix I could not see dlna from any clients connected to the 880L.

I have a laptop hardwired to the 880L right now, have full internet access via the bridge but the 895L does not show the IP of the 880L. So I have no idea what to try to connect to.

FYI, this was the thread I created when I first bought & couldn’t see DLNA
http://forums.dlink.com/index.php?topic=66470.0
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on March 16, 2019, 01:51:04 PM
Hmmm, should show an IP address for the 880L.
Might try a FING app scan with a mobile device to see if that picks up the 880L and IP address.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: Tario70 on March 16, 2019, 08:39:14 PM
Excellent call on Fing. That showed me the IP. I could only log in to the 880L hardwired into it. I got in & set up a daily reboot schedule to see if that fixes the issue.

I also just set the time manually instead of NTP since that wasn't working.

We'll see how it goes.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on March 17, 2019, 11:29:06 AM
Glad you found it.

I guess that would be a good alternative work around to keep the 880L going. Set up a daily or weekly reboot.

NTP services works in bridge mode or ever did. That requires the use of the WAN port which is not supported in bridge mode.  ;)

Let us know how it goes..
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: Tario70 on March 17, 2019, 11:33:42 AM
Resetting the DIR-880L did not work, nor did the daily reboots.

My Xbox One X cannot see the DLNA server either anymore. It's all hit or miss which is really frustrating to say the least. When I initially set the 880L up, I was able to see the DLNA server. Now it's not working. Even after doing a "rescan" to connect to it.

I've gone back again to the trusty DAP-1522. Even though the download speeds were way better on the DIR-880L, I need reliability far more than the speeds at this point. Very frustrating. Does D-Link even make any other bridges? I may look into powerline adapters to see how those work but I'm not optimistic.

Thanks for the assist though.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on March 17, 2019, 12:19:56 PM
Darn, was hoping.  :-\

I think the 885L and 895L were the last supported wireless bridge models.

One thing you could try, load up DD-WRT on the 880L to see if this help fix this with the 880L:
http://forums.dlink.com/index.php?topic=72749.0 (http://forums.dlink.com/index.php?topic=72749.0)
It's been a while since i've tired it with mine. I possibly could again...
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: Tario70 on April 07, 2019, 09:48:40 PM
Took your advice & tried DD-WRT. The DIR-880L is now 100% useless for me.

DD-WRT could not see the DLNA server at all. I searched & searched. Nothing. So I did a 30-30-30 reset of the router. Reinstalled FW1.07 from the emergency FW page. After that I went to the firmware 1.20B1 which has the DLNA fix. This worked fine before the installation of DD-WRT. I was confused as the router somehow remembered my settings once I got to that firmware.

Now I can't see the DLNA server at all on the DLink official firmware. I'm completely hosed.  :'(

I used the GUI to reset to factory defaults & re-set everything up. Still nothing. If I connect my laptop directly to the wifi of the DIR-895L I can see the server without issue. If I connect via the DIR-880L I can only see the smb share (which I don't have setup). The DLNA software (Serviio) can see the laptop, the Xbox X & my Blu-ray player as being active but the devices cannot see the server.

I am extremely frustrated that this issue continues to plague me. I wish there was a media bridge or router out there that would work. I cannot fathom why DLNA is consistently blocked.
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on April 22, 2019, 06:57:35 AM
7 months later....I got a beta for this issue Scan

ftp://FTP2.DLINK.COM/PRODUCTS/DIR-880L/REVA/DIR-880L_REVA_FIRMWARE_v1.20B01_BETA02.zip (ftp://FTP2.DLINK.COM/PRODUCTS/DIR-880L/REVA/DIR-880L_REVA_FIRMWARE_v1.20B01_BETA02.zip)
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on April 22, 2019, 07:18:29 AM
Does v1.21 have this fix included?  ??? I saw there was a recent v1.21 posted...

"I got a beta for this issue Scan" Huh?  ???

7 months later....I got a beta for this issue Scan

ftp://FTP2.DLINK.COM/PRODUCTS/DIR-880L/REVA/DIR-880L_REVA_FIRMWARE_v1.20B01_BETA02.zip (ftp://FTP2.DLINK.COM/PRODUCTS/DIR-880L/REVA/DIR-880L_REVA_FIRMWARE_v1.20B01_BETA02.zip)
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: GreenBay42 on April 22, 2019, 07:23:34 AM
I do not know. I am sure the beta is based off the older file and does not include the 1.21 fixes.

scan = the OP scan80269
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on April 22, 2019, 07:28:04 AM
Ok. Would be nice if these could be all inclusive.

I'll load mine up and test this out... ;)
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on April 23, 2019, 03:52:46 PM
Ok, updated to this version of FW. Will leave it online and check to see if I lose internet or not in wireless bridge mode.
Firmware External Version : V1.20
Firmware Internal Version : V1.20B01_20190412_BETA02
Date : 12, Apr, 2019
CheckSum : 39203139
2.4GHz regulation domain : NA
  1,2,3,4,5,6,7,8,9,10,11
5GHz country code : NA/US
  36,40,44,48,149,153,157,161,165
5GHz DFS Channel :
Title: Re: DIR-880L DHCP failure in Bridge mode?
Post by: FurryNutz on April 26, 2019, 08:21:40 PM
Well I don't think this version FW fixes this issue. I was just sitting at my PC doing forums stuff, browsing and then I closed my browser down and looked down and noticed that my network icon on Windows 7 had a yellow exclamation on it. I pinged the router and it failed. I pinged the last known IP address that the 880L had in bridge mode and it was responding. I was able to access the 880Ls web page. I checked with a Mac Book Pro 2008 connected to the main host router and pinged the 880L from that side and it also failed. I unplugged the wired PC connected to the 880L and back in and it failed to get a IP address from the router.

I rebooted the 880L and now everything is back to working again.

I'll be putting a COVR-1203 online tomorrow and will retest the 880L again.

7 months later....I got a beta for this issue Scan

ftp://FTP2.DLINK.COM/PRODUCTS/DIR-880L/REVA/DIR-880L_REVA_FIRMWARE_v1.20B01_BETA02.zip (ftp://FTP2.DLINK.COM/PRODUCTS/DIR-880L/REVA/DIR-880L_REVA_FIRMWARE_v1.20B01_BETA02.zip)