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Question

Belkin Router disconnects from internet if wifi radio is on

by Dec 14, 2016 11:48AM PST

So, I've got a Belkin F9K1105 v3 (01) dual band router. My cable ISP had a node outage for a few hours then came back up. When it did, all of a sudden my router is having issues. On the router, Blue light is good and Orange light is bad. I power cycled the modem and router and was able to connect fine. 20 minutes later I lose my internet connection and the blue light turns orange. The router itself disconnects from the internet. The cable modem is fine and still getting it's signal. I have a PC and a Roku hooked up via ethernet. I have a 2ghz wifi with 2 smartphones on it, and a 5ghz wifi with a tablet on it. After hours of troubleshooting with the ISP, they assure me it's nothing on their end (like maybe IP changes or rejecting my router). PC connects fine if I plug directly into the modem. If I turn off the wifi radios, I'll stay connected for hours. I turned on the wifi radios, changed my wifi name and password. And then I waited an hour, still connected. I put one smartphone on the 2ghz wifi (going one device at a time). 20 minutes later, I'm browsing chrome on my phone and then lose internet. The router light goes orange and I can't connect to the internet from any device now. Is my router's wifi radio just dead? Did something break? It's not overheating. Has anyone ever experienced this? At least I still have a LAN for the time being.

Discussion is locked

4 Posts
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Answer
Yes.
by Forum moderator Dec 14, 2016 12:38PM PST

I have seen such happen on many routers. Weird failures so let's try the usual first.

Factory reset the router, make sure the firmware is current (if updating, factory reset after the firmware install) and then make as few changes as possible to bring the router online.

Re-test and if it fails, try another router.

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Don't have another router
by decrapnet Dec 15, 2016 11:51PM PST

Thanks for answering. The firmware version is the only one offered by belkin. I re-applied it anyway since it let me. So, firmware up to date. Reset didn't work. I thought maybe it was overheating so I had a fan blowing 40 degree farenheit air directly into it. I turned the wifi on and around 15 minutes later when I thought it was fixed... it went out again. I understand things happen with routers but the timing concerns me. The cable companies node goes out, my modem gets a hard power reset, all of a sudden like clockwork my router gets shut down if i turn on the wifi.

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Routers are like that.
by r. proffitt Forum moderator Dec 16, 2016 12:17PM PST

This is why all our techs carry a spare router on the call.

Routers that fail like this are never repaired even in warranty. I'm sure you can guess why.

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Answer
Router logs of what happens
by Dec 16, 2016 1:03AM PST

So, I power cycle the modem and router and everything connects. I play youtube on my phone, play netflix on my roku, and mess around on my pc. After a while Internet goes out at Dec 15 23:58. I power cycle just the modem, so I can keep this log. It actually reconnects. I enjoy a movie on netflix for a while until it disconnects again Dec 16 00:52:48. I power cycle the modem and it reconnects. This is all the dumb log shows.
Jan 1 00:00:07         started, version 2.60 cachesize 150
Jan 1 00:00:07         compile time options: IPv6 GNU-getopt no-DBus no-i18n no-IDN DHCP DHCPv6 no-Lua TFTP no-conntrack
Jan 1 00:00:07         failed to load names from /etc/hosts: No such file or directory
Jan 1 00:00:10         igmp started!
Jan 1 00:00:11         load config file
Jan 1 00:00:11         recieve.c(60)start recieve loop
Jan 1 00:00:11         ------------------------------------
Jan 1 00:00:11         NetBIOS Name = router
Jan 1 00:00:11         Workgroup = WORKGROUP
Jan 1 00:00:11         Scope ID =
Jan 1 00:00:11         Comment = Belkin Router
Jan 1 00:00:11         WINS = 255.255.255.255
Jan 1 00:00:11         ------------------------------------
Jan 1 00:00:11         HEAP: addr=00000000 size=00800000
Jan 1 00:00:11         Thread start INIT(619)
Jan 1 00:00:11         Thread start NETLINK(623)
Jan 1 00:00:11         Thread start NBT_NS(624)
Jan 1 00:00:11         Thread start NBT_DM(625)
Jan 1 00:00:11         Thread start BROWS_RES(626)
Jan 1 00:00:12         Thread start TCP_ACPT(639)
Jan 1 00:00:12         TCPMAIN:No MACB to bind
Jan 1 00:00:12         TCPMAIN: IP:192.168.2.1 NetMask:255.255.255.0 GateWayShocked.0.0.0
Jan 1 00:00:12         ACCEPT: wait_nic_init...
Jan 1 00:00:12         NBT: Regist Start
Jan 1 00:00:12         NBT: Use 192.168.2.1
Jan 1 00:00:12         UDP:Error in sendto()
Jan 1 00:00:12         UDP:Reason Network is unreachable(12Cool
Jan 1 00:00:12         UDP:Error in sendto()
Jan 1 00:00:12         UDP:Reason Network is unreachable(12Cool
Jan 1 00:00:12         UDP:Error in sendto()
Jan 1 00:00:12         UDP:Reason Network is unreachable(12Cool
Jan 1 00:00:12         21612 byte heap memory used.
Jan 1 00:00:12         CRM:Del task TCP_ACPT Thread ID:6151
Jan 1 00:00:12         udhcp server (v0.9.Cool started
Jan 1 00:00:12         udhcp server (v0.9.Cool started
Jan 1 00:00:12         udhcp client (v0.9.Cool started
Jan 1 00:00:12         read /etc/hosts - 2 addresses
Jan 1 00:00:12         read /etc/hosts - 2 addresses
Jan 1 00:00:12         using nameserver 8.8.4.4#53
Jan 1 00:00:12         using nameserver 8.8.8.8#53
Jan 1 00:00:12         load config file
Dec 15 23:55:16         NBTNS: No Response of Regist from 255.255.255.255
Dec 15 23:55:17         interface 192.168.2.1, DOWNSTREAM ver=0x16 name=br0 index=7
Dec 15 23:55:17         interface 75.136.134.48, UPSTREAM ver=0x16 name=vlan1 index=5
Dec 15 23:55:17         Link Up
Dec 15 23:55:19         received REQUEST
Dec 15 23:55:19         received DISCOVER
Dec 15 23:55:21         sending OFFER of 192.168.2.2
Dec 15 23:55:21         received REQUEST
Dec 15 23:55:21         sending ACK to 192.168.2.2
Dec 15 23:55:24         received DISCOVER
Dec 15 23:55:24         sending OFFER of 192.168.2.3
Dec 15 23:55:24         received REQUEST
Dec 15 23:55:24         sending ACK to 192.168.2.3
Dec 15 23:55:33         NBT: Regist end 192.168.2.255, type 0x0100
Dec 15 23:55:35         NBT: Master Confirm
Dec 15 23:55:46         NBT: Master name is ROUTER
Dec 15 23:55:47         Internet Status: Connected
Dec 15 23:55:47         PING Success
Dec 15 23:55:56         received DISCOVER
Dec 15 23:55:58         sending OFFER of 192.168.2.4
Dec 15 23:55:58         received REQUEST
Dec 15 23:55:58         sending ACK to 192.168.2.4
Dec 15 23:56:48         received DISCOVER
Dec 15 23:56:50         sending OFFER of 192.168.2.5
Dec 15 23:56:55         received DISCOVER
Dec 15 23:56:55         sending OFFER of 192.168.2.5
Dec 15 23:56:55         received REQUEST
Dec 15 23:56:55         sending ACK to 192.168.2.5
Dec 15 23:56:56         received DISCOVER
Dec 15 23:56:56         sending OFFER of 192.168.2.5
Dec 15 23:56:56         received REQUEST
Dec 15 23:56:56         sending ACK to 192.168.2.5
Dec 15 23:58:40         Internet Status: Not Connected
Dec 15 23:59:24         Unicasting a release of 75.136.134.48 to 68.114.38.214
Dec 15 23:59:24         Sending release...
Dec 15 23:59:25         read /etc/hosts - 2 addresses
Dec 15 23:59:25         Entering released state
Dec 15 23:59:26         Performing a DHCP renew
Dec 16 00:01:42         mDNSPlatformSendUDP got error 22 (Invalid argument) sending packet to 224.0.0.251 on interface 75.136.134.48/vlan1/5
Dec 16 00:04:05         Lease of 192.168.100.10 obtained, lease time 30
Dec 16 00:04:05         read /etc/hosts - 2 addresses
Dec 16 00:04:05         using nameserver 8.8.4.4#53
Dec 16 00:04:05         using nameserver 8.8.8.8#53
Dec 16 00:04:21         Lease of 192.168.100.10 obtained, lease time 30
Dec 16 00:04:21         read /etc/hosts - 2 addresses
Dec 16 00:04:21         using nameserver 8.8.4.4#53
Dec 16 00:04:21         using nameserver 8.8.8.8#53
Dec 16 00:04:50         Lease lost, entering init state
Dec 16 00:04:50         read /etc/hosts - 2 addresses
Dec 16 00:04:51         Lease of 75.136.134.48 obtained, lease time 21684
Dec 16 00:04:51         read /etc/hosts - 2 addresses
Dec 16 00:04:51         using nameserver 8.8.4.4#53
Dec 16 00:04:51         using nameserver 8.8.8.8#53
Dec 16 00:05:08         Internet Status: Connected
Dec 16 00:05:08         PING Success
Dec 16 00:52:48         Internet Status: Not Connected
Dec 16 00:53:32         Unicasting a release of 75.136.134.48 to 68.114.38.214
Dec 16 00:53:32         Sending release...
Dec 16 00:53:33         read /etc/hosts - 2 addresses
Dec 16 00:53:33         Entering released state
Dec 16 00:53:34         Performing a DHCP renew
Dec 16 00:55:52         Lease of 75.136.134.48 obtained, lease time 18623
Dec 16 00:55:52         read /etc/hosts - 2 addresses
Dec 16 00:55:52         using nameserver 8.8.4.4#53
Dec 16 00:55:52         using nameserver 8.8.8.8#53
Dec 16 00:56:08         Internet Status: Connected
Dec 16 00:56:08         PING Success

The Firewall log shows only this
Dec 16 00:30:33         IPTABLES UDP-FLOOD: IN=vlan1 OUT= MAC="mac address" SRC=8.8.8.8 DST=75.136.134.48 LEN=164 TOS=00 PREC=0x00 TTL=46 ID=8683 PROTO=UDP SPT=53 DPT=8319 LEN=

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