I've got a situation where I want to conditionally advertise a prefix via BGP when any 32 bit route exists for the given prefix. E.g. I only want to advertise prefix 22.214.171.124/24 if a /32 exists for this network, so say 192.168.1.1/32 or 2/32 or 3/32. On top of this I was wondering if there is a way to make it intelligent using an if then type of condition:
if any 192.168.1.* with a /32 mask exists then advertise 192.168.1.0/24 else don't advertise 192.168.1.0/24.
I know about conditional BGP advertisement using the non-exist-map but this only works if a prefix is not present in the IP routing table.
I was wondering if IP SLA or PfR may work. I’ve been looking into IP SLA and I haven’t really been able to figure out a way to do it.
Has anyone done this or attempted it? Even if it doesn’t include a wild card like the * and is just based on a specific prefix I’d like to know.
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.