Archive for December, 2007

Two routing protocols, Same administrative distance?

December 31st, 2007 • Brad Hedlund • 3 comments • Related • Filed Under

What happens when a router has two routing protocols running and is receiving similar routes from each routing protocol?

Easy question, right? The routing protocol with the lower administrative distance has its routes installed in the routing table (routing information base - RIB).

However, an interesting question that comes up from time to time is this:

What if I configure the administrative distance to be the same for two routing protocols? Will the router install routes from each routing protocol and allow me to load balance traffic?

Outage Story with VTP

December 2nd, 2007 • Brad Hedlund • 4 comments • Related • Filed Under

One of my accounts had an unfortunate network outage that lasted about an hour. This outage was caused by human error with VTP but not in the classic revision number way we have heard about before.

Here is what happened…