D-Link Forums
The Graveyard - Products No Longer Supported => Routers / COVR => DIR-628 => Topic started by: endo129 on January 27, 2017, 09:29:31 AM
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Hello,
For the last few month I have been noticing that my router seems to randomly drop its connection to all my devices. The network appears to still be up, but I cannot connect to the internet or even to the router wirelessly. I've mad e some changes and firmware updates that have improved the issue, but it still happens, just not as much. What I have noticed in the logs is that when it goes down I see a lot of the following with varying details as far as IPs and sequences. I fact, I see these messages constantly while it is down.
Blocked incoming TCP packet from 104.244.42.194:443 to 24.144.219.88:52270 with unexpected sequence 1548970904 (expected 998373627 to 1002567868)
I've read something about disabling SPI but also read that it's a good security feature.
Any help and suggestions are appreciated!
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Link>Welcome! (http://forums.dlink.com/index.php?topic=48135.0)
- What Hardware version is your router? Look at sticker under the router case.
- Link>What Firmware (http://forums.dlink.com/index.php?topic=47512.0) version is currently loaded? Found on the routers web page under status.
- What region are you located?
- Has a Factory Reset (http://blog.dlink.com/what-is-a-reset-button-when-should-i-use-it) been performed?
- Was a Factory Reset performed before and after any firmware updates then set up from scratch?
Link> >FW Update Process (http://forums.dlink.com/index.php?topic=42457.0)
Internet Service Provider and Modem Configurations
- What ISP Service do you have? Cable or DSL?
- What ISP Modem Mfr. and model # do you have?
Wireless Configurations
Links>Wireless Installation Considerations (http://forums.dlink.com/index.php?topic=48327.0) and Managing Signal Congestion (http://forums.dlink.com/index.php?topic=53228.0) and Good Neighbour Policy (http://forums.dlink.com/index.php?topic=10634.0)
- What wireless modes are you using?
- 2.4Ghz and 5Ghz routers: Try single mode G or N or mixed G and N on 2.4Ghz and single mode N or AC on 5Ghz?
- Channel Width set for Auto 20/40Mhz or try 20Mhz only.
- Try setting a manual Channel (http://en.wikipedia.org/wiki/Wireless_channels) to a open or unused channel. 1, 6 or 11. 11 for single mode N if the channel is clear. 13 for EU regions. Try channel 48 or 149 on 5Ghz.
- What security mode are you using? Preferred security is WPA-Personal. WPA2/AES Only. Some WiFi adapters don't support AES (http://en.wikipedia.org/wiki/Advanced_Encryption_Standard), so you might want to try TPIK (http://en.wikipedia.org/wiki/Temporal_Key_Integrity_Protocol) only or Auto TPIK and AES.
- What wireless devices do you have connected?
- Ensure any devices with WiFi adapter drivers are updated.
- Any 2.4Ghz or 5Ghz cordless house phones or WiFi APs near by that maybe causing interferences?
- Any other WiFi routers in the area that maybe causing interferences? Link> Use a WiFi Scanner (http://forums.dlink.com/index.php?topic=48327.0) to find out. How many?
- If you have any of these options, Try turning OFF or ON Short GI (http://www.smallnetbuilder.com/wireless/wireless-features/30969-what-do-80211ns-optional-features-mean-for-you), WLAN Partition, Extra Wireless Protection and HT 20/40 Co-existence if you have it. Also testing with HT20/40Mhz Co-existence enabled will impact results as well. I prefer to use this option OFF. Recommended settings are default. Under Advanced/Advanced Wireless.
- Disable WPS (https://www.dslreports.com/shownews/Networking-101-What-is-WPS-and-Why-You-Should-Not-Use-It-137081) Under Advanced/Advanced Wireless or Wireless settings.
Router Placement
Forum User - "Well I feel really dumb. After moving the router away from other electronic devices my speeds are back to normal. Just a heads up for anyone experiencing slow speeds, you might want to move it away from other electronics and see if that helps."
3-6' feet minimum safe distance between devices.
Placement on main level floor and central in the building and WELL ventilated is preferred. Not in basements or closets as building materials, or near by electronics devices could interfere or hinder good signal propagation.
http://www.smallnetbuilder.com/wireless/wireless-basics/31083-smallnetbuilders-wireless-faq-the-essentials (http://www.smallnetbuilder.com/wireless/wireless-basics/31083-smallnetbuilders-wireless-faq-the-essentials)