Re: Can I backup link between 2 Ethernets by using router?
You generally need a routing protocol to provide failover over Ethernet links, because an Ethernet link won't change state to "down" unless the directly-connected device (which is usually a switch) goes down.
However, if the routers are directly-connected in your case (i.e., no switch in between) you may be able to get away with using a floating static route. You'd have a standard route pointing out the primary interface, and a floating static route pointing out the secondary interface. The floating route will only come into effect when the standard route is removed from the routing table; i.e., when the primary link goes down.
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.