We have a Cisco 2851 router that crashes every night. Below is the 'show log' output. The provider is telling us that it is our equipment. We have replaced the router and still have the same problem. Is it our equipment or the provider? Please help.
Feb 15 19:29:43: %BGP-5-ADJCHANGE: neighbor x.x.x.x Down Interface flap
Feb 15 19:29:43: %BGP_SESSION-5-ADJCHANGE: neighbor x.x.x.x IPv4 Unicast topology base removed from session Interface flap
Feb 15 19:29:44: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0:0, changed state to down
Feb 15 22:34:13: %CONTROLLER-5-UPDOWN: Controller T1 0/0/0, changed state to down (LOS detected)
Feb 15 22:34:15: %LINK-3-UPDOWN: Interface Serial0/0/0:0, changed state to down
- does the router crash right after the serial goes down? I wouldn't say it is a 'crash' per say. The serial goes down and we lose connectivity. A reboot sometimes fixes the problem.
- does that happen every night? always at the same time? Yes, it has been happening a little after 4pm EST every day.
Sounds like an ISP issue alright. I've heard this before. I've seen a case where the WAN link from the ISP turns to mush after 5pm daily and during the weekend. Because the issue happens outside business hours no one bothered and the ISP couldn't replicate it.
Anyway when the calls got louder about how the network degrades after office hours, the ISP finally (or grudgingly) put a few 6-hour BER test machines at the customer premises. This is where they found the complaints to be true. They investigated and found out it's happening because ever time the place (where the nodes are) closes for the day, they turned off the power to the lights. There was a short circuit (or something) which caused the circuits to go absolutely nuts.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.