I am changing the routing config for all our sites, We have a head office and 9 remote sites. Our line provider originally wrote the configs, but the backup links never worked, so I am re-writing them myself.
And I've come across a confusion with the BGP side of things.
Each site is in the same BGP AS! They connect to core routers which are in different AS but each of our sites is in the same AS. When I recreate this in my lab I cannot get the routes for each site to propagate. When I make the remote sites a different AS then the routes propagate fine.
What's your end goal exactly? BGP using the same AS is an iBGP environment. In order for you to be able to get a route directly to a remote site, I would think you'd need to set up ebgp-multihop in order to get this to work. I'd have to test it. Are you trying to get off of the iBGP scenario?
For example, let's say that all of your sites is in AS100 and the provider is AS200. The provider will have in their routing table the routes (in this case, your summaries) in their table pointing to your serial side that matches where the summary is coming from, and whatever other routes you're advertising. A summary route is hard to "fail over" to because summaries help with flapping links, etc. It also depends on how your site is laid out if a backup route makes sense. If you have only 1 exit point from your branch, then a backup route won't help.
We have 3 identical switches configured by someone else and would like to claim some of the Gigabit ports(G1/G2/G3/G4) for use on servers. When we try to change the wiring and configuration, we run in to connectivity issues. Attached is a des...
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...