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Author Topic: ideas for debugging 5Ghz dropouts?  (Read 2186 times)

afa3

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Re: ideas for debugging 5Ghz dropouts?
« Reply #15 on: January 19, 2018, 12:18:04 PM »

Sent an email to D-Link support. The case ID is C7081296.

I thought about trying DD-WRT, but the comments on the DIR-878 thread say it might have issues. I still might try it if I have time this weekend.
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FurryNutz

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Re: ideas for debugging 5Ghz dropouts?
« Reply #16 on: January 19, 2018, 12:21:09 PM »

Ok, I've passed this on to D-Link for review.

Keep us posted if you get any info.

Review this before migrating to WRT:
http://forums.dlink.com/index.php?topic=72749.0

I'll be around if you need help. There has been known issues with WRT globally for DIR series router. They fixed that this last Dec 2017.
So you might give most recent WRT a try:
https://www.dd-wrt.com/phpBB2/viewtopic.php?t=310376&highlight=dir878
« Last Edit: January 19, 2018, 12:23:10 PM by FurryNutz »
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Cable:200mb/10Mb>Motorola MB7420>COVR3902>HP 24pt Gb Switch. 3xDGL-4500s,DIR-857,835,827,815,890L,880L,868L,865L,836L,810L,685,657,3x655s,645,628,601,DNR-202L,DNS-345,DCS-933L,936L and 960L.
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afa3

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Re: ideas for debugging 5Ghz dropouts?
« Reply #17 on: January 21, 2018, 02:01:37 PM »

I tried DD-WRT. It seems to have issues of its own, so it's not a solution for my use.

DD-WRT would not stream live TV from my HDHomeRun tuner for more than a few seconds before dropping. It wouldn't even do it across wired connections. This may have to do with DNLA multicast or UPnP support. I turned on UPnP, which is off by default. I didn't see any DD-WRT options for multicast, so I gave up on it.

The ASUS bridge also often had trouble even seeing the DIR-878 on 5Ghz. This seemed to vary with channel and channel width settings.

I tried both r34311 and r34578. Same streaming issue on both.

Once connected, DD-WRT otherwise seemed OK. File copies and surfing were good. I did some streaming of recorded video, which was was good for the time that I did it. I didn't see the same dropouts as with the stock firmware, but I didn't test it for a long period.

Flashing back and forth was easy. Thanks for the instructions.
« Last Edit: January 24, 2018, 11:09:32 AM by afa3 »
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FurryNutz

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Re: ideas for debugging 5Ghz dropouts?
« Reply #18 on: January 21, 2018, 02:09:40 PM »

Ok, I was hoping. Well, seems like there maybe an issue with FW and this particular model bridge your using.

Only think I might try would be to try a different model DIR router if there is one available. See if possible a different model would work.

I would email this to support and give all specifics to what you tried and give info to the bridge you use and having problems with. I believe this needs to be reviewed in D-Link labs.
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Cable:200mb/10Mb>Motorola MB7420>COVR3902>HP 24pt Gb Switch. 3xDGL-4500s,DIR-857,835,827,815,890L,880L,868L,865L,836L,810L,685,657,3x655s,645,628,601,DNR-202L,DNS-345,DCS-933L,936L and 960L.
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afa3

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Re: ideas for debugging 5Ghz dropouts?
« Reply #19 on: January 24, 2018, 11:25:16 AM »

A bit more information, but no change in the results. I'm returning the DIR-878.

The ASUS TM-AC1900 bridge I'm using is a T-Mobile version of the RT-AC68U. Up until now, I was using the T-Mobile version of firmware.

I flashed to the ASUS RT-AC68U firmware. Dropouts are still there.

I also picked up a laptop WiFi AC1200 USB dongle. That works fine with the DIR-878.

So basically, the DIR-878 and ASUS don't work reliably together. Both work fine with other, slower devices. I don't have a third AC1900 device to try, so I can't narrow the problem down to one or the other. All the other devices I have are AC1200 or N.

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FurryNutz

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Re: ideas for debugging 5Ghz dropouts?
« Reply #20 on: January 24, 2018, 11:58:12 AM »

Thanks for the additional info. I presume there is a problem between these two Mfrs. The 878 is still being reviewed and FW being developed. Hopefully it will change in the future.

Good Luck.
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Cable:200mb/10Mb>Motorola MB7420>COVR3902>HP 24pt Gb Switch. 3xDGL-4500s,DIR-857,835,827,815,890L,880L,868L,865L,836L,810L,685,657,3x655s,645,628,601,DNR-202L,DNS-345,DCS-933L,936L and 960L.
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FurryNutz

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Cable:200mb/10Mb>Motorola MB7420>COVR3902>HP 24pt Gb Switch. 3xDGL-4500s,DIR-857,835,827,815,890L,880L,868L,865L,836L,810L,685,657,3x655s,645,628,601,DNR-202L,DNS-345,DCS-933L,936L and 960L.
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