I have an Ospf lab and i wish to configure virtual-link so that all routers can exchange routing tables. I succefully did it for the router 2 in area 1 but i don't know how i should proceed with router 23 in area 2. Please see the attached topology for more understanding of my lab. thanks.
you don't need a virtual link for each router of area 2 if you have setup a virtual link between router2 and router3 you have provided a point to point logical link to area 0 and this is enough for all routers in area 2, actually it allows area 2 summary routes to reach the backbone area.
To be noted that area 3 in your picture can never be attached to area 0, because a virtual link cannot cross multiple areas to reach area 0.
So if you question is there is a way for area 3 to be part of this OSPF domain the answer is negative.
In real world the use of virtual links is limited to temporary fixes after a network merge and they are quite rare
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.