On Sun, May 12, 2013 at 6:41 PM, Glen Kent <glen.kent@gmail.com> wrote:
I would like to understand the scenarios wherein the service provider/network admin might run both ISIS and OSPF together inside their network. Is this something that really happens out there?
One scenario that i can think of when somebody might run the 2 protocols ISIS and OSPF together for a brief period is when the admin is migrating from one IGP to the other.
The other instance would be when say OSPF is used to manage the OOB network and the ISIS is used for network reachability.
Is there any other scenario?
There is still equipment around which doesn't support ISIS but support OSPF. Getting such boxes into a network which is using ISIS might lead to running both protocols together. -- SY, Jen Linkova aka Furry