As I am new to multihoming I would like to know whether it is possible to have dual ISP's connecting to one single Edge Router in a fail over ISP scenario. I will be connecting my firewall to the end router and the router will have two ISP's broadcasting the BGP routes.
Yes it is quite possible to multi home with 2 ISPs on a single router. In fact, in some ways it is easier to do on one router than to do on two routers.
One thing to be aware of when running BGP to multihome with multiple ISPs on one router is whether both ISP will send full routing table updates. It takes quite a bit of memory to have the entire table and if you receive the entire table from both providers then it increases the memory requirement for your router. Many people who multi home with have one (and sometimes have both) ISP to just advertise a default route or a default route and the routes that are directly connected to their AS. This can be a good strategy where one ISP is primary and the other ISP is intended for fail over.
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.