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WAN Link down: Router ASUS n56


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#1 Pajajn

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Posted 02 July 2013 - 02:38 PM

I got modem Zyxel 660D1 and a ASUS router n56u that's working fine almost everyday. Sometimes i get WAN link down when trying access websites (gateway still working to connect 192.168.1.1) but internet is down

Router shows 
 

Jul  2 19:11:23 kernel: ACT - SendBSS2040CoexistMgmtAction( BSSCoexist2040 = 0x6 )  
Jul  2 19:12:47 kernel: ACT - SendBSS2040CoexistMgmtAction( BSSCoexist2040 = 0x4 )  
Jul  2 19:17:47 kernel: ACT - SendBSS2040CoexistMgmtAction( BSSCoexist2040 = 0x4 )  
Jul  2 19:22:47 kernel: ACT - SendBSS2040CoexistMgmtAction( BSSCoexist2040 = 0x4 )  
Jul  2 19:25:14 kernel: ACT - SendBSS2040CoexistMgmtAction( BSSCoexist2040 = 0x6 )  
Jul  2 19:26:06 WAN Connection: Ethernet link down.
Jul  2 19:26:06 stop_nat_rules: apply the redirect_rules!
Jul  2 19:26:17 kernel: ACT - SendBSS2040CoexistMgmtAction( BSSCoexist2040 = 0x6 )  
Jul  2 19:26:30 kernel: ACT - SendBSS2040CoexistMgmtAction( BSSCoexist2040 = 0x6 )  
Jul  2 19:27:47 WAN Connection: Ethernet link up.
Jul  2 19:27:47 rc_service: wanduck 417:notify_rc restart_wan_if 0
Jul  2 19:27:47 stop_wan(): perform DHCP release
Jul  2 19:27:47 kernel: ACT - SendBSS2040CoexistMgmtAction( BSSCoexist2040 = 0x4 )  
Jul  2 19:27:47 kernel: eth3: ===> VirtualIF_close
Jul  2 19:27:47 kernel: eth3: ===> VirtualIF_open
Jul  2 19:27:48 WAN Connection: ISP's DHCP did not function properly.
Jul  2 19:28:00 WAN Connection: Ethernet link down.
Jul  2 19:28:07 WAN Connection: Ethernet link up.
Jul  2 19:28:07 rc_service: wanduck 417:notify_rc restart_wan_if 0
Jul  2 19:28:07 stop_wan(): perform DHCP release
Jul  2 19:28:07 kernel: eth3: ===> VirtualIF_close
Jul  2 19:28:09 kernel: GDMA2_MAC_ADRH -- : 0x000098fc
Jul  2 19:28:09 kernel: GDMA2_MAC_ADRL -- : 0x11c5f0b6
Jul  2 19:28:09 kernel: eth3: ===> VirtualIF_open
Jul  2 19:28:10 WAN Connection: ISP's DHCP did not function properly.
Jul  2 19:28:38 start_nat_rules: apply the nat_rules(/tmp/nat_rules_eth3_eth3)!
Jul  2 19:28:39 rc_service: udhcpc 10368:notify_rc stop_upnp
Jul  2 19:28:39 rc_service: udhcpc 10368:notify_rc start_upnp
Jul  2 19:28:39 dhcp client: bound 90.231.xx.xxx via 90.231.xx.xxx during 1200 seconds.
Jul  2 19:28:43 WAN Connection: WAN was restored.

Anyone that has a solution? 

Tried switching ethernet cables between router-modem but no success. Also tried updating firmware in both router and modem. Used custom firmwares for router everyone has same problem after a while but seems to work at start. Tried with UpnP off and different DHCP query frequencies 

 

 



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#2 Sneakycyber

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Posted 03 July 2013 - 04:50 PM

I would start with your ISP and tell them your internet keeps dropping, have them replace the modem. Not sure if DSL can be "turned off" when not in use or not. I have a customer with a Zyextel modem and this has happend several times. I have yet to find a solution, interestingly he has 2 identical routers for an Office and home wireless networks and only one screws up all the time.


Chad Mockensturm 
Network Engineer
Certified CompTia Network +, A +

#3 Pajajn

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Posted 03 July 2013 - 07:09 PM

I would start with your ISP and tell them your internet keeps dropping, have them replace the modem. Not sure if DSL can be "turned off" when not in use or not. I have a customer with a Zyextel modem and this has happend several times. I have yet to find a solution, interestingly he has 2 identical routers for an Office and home wireless networks and only one screws up all the time.

Thing is i tried talking with the ISP customer support. As almost always in every case the support cant actually help just sayin that they sent a technician and everything looks normal from their side

Strange thing is that the modem just needs like 30s-1min offtime to assign same IP adress as before but this time connection works..........   It also works just spoofing the router MAC and get a whole new external IP adress to use






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