There is 'down-when-looped' command for serial interfaces. This places the interface 'down' when a loop detected and packets will be routed via backup path (if exists). Hope, I got your question correct:).
normally, the interface will still be 'down' even if the loop is placed in the ISP demarcation only and not facing the router. is there a command to know that the router detected a loop? aside from that, can a router provide a loopback facing ISP?
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.