Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

running routing protocols over GRE tunnel

What are the issues (if any) of running routing protocol across GRE tunnel

thank you

1 REPLY
Hall of Fame Super Silver

Re: running routing protocols over GRE tunnel

I have implemented GRE tunnels on many routers and run dynamic routing protocols over them. It works very well. Probably the biggest issue with GRE tunnels and dynamic routing protocols is to not create recursive routing problems. The recursive routing problem happens when the dynamic routing protocol advertises the end point of the tunnel (tunnel destination) as being reachable by the tunnel. So you need to make sure that the router has a better path to the tunnel end point (tunnel destination) than trying to go through the tunnel to get to its end point.

HTH

Rick

286
Views
5
Helpful
1
Replies