We are implementing OSPF authentication in our network, and by the moment we are doing fine in the areas surrounding area 0. These are small areas (5 to 9 routers in each of them), and all joined together with E1s (serial interfaces). Touching the dead-intervals and hello-intervals there isn't any break down in the network since we control the updates.
The problem is coming with area 0 where we have more than 80 routers, and also MSFCs with virtual interfaces. There are DRs and BDRs for different devices on the network son it's more complicated than the situatin we had on the small areas.
Do you know some procedure or method to implement authetication on big areas without harming the routing updates and therefore, the traffic?
I know it's difficult, and we have to do some research on a test network environment we have before doing our real stuff, but it would be nice to facilite the work with something to start.
Thanks and regards