You may use floating static routes i.e. routes with diff AD. e.g.
ip route x.x.x.x y.y.y.y next-hop (primary route)
ip route x.x.x.x y.y.y.y next-hop 10(secondary route)
where 10 in second statement i the AD. So, as long as next-hop in the 1st route statemnt is reachable, it will be used. Once the next-hop cant be reached than second route will be used due to higher AD.
if the two providers connect to two different routers in your network you need to redistribute the branch site IP prefixes in your IGP taking care to make the primary path the preferred one for all internal routers. You may accept that the router connected to the backup link locally use the backup path (or you can use on it a floating static route with AD > [your IGP external routes AD]).
When the primary link fails all routers will install the routes injected by the router connected to the backup link in the IGP protocol.
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.