Tagging External Routes in EIGRP

Fri, 03 Dec 2010 00:00:00 +0000

EIGRP allows you to tag external routes. That is, any route redistributed into EIGRP can be tagged with a numeric descriptor from 0 to 4294967295.

ROUTE Notes - More IGP Redistribution

Wed, 23 Jun 2010 00:00:00 +0000

As always, feel free to correct.

Study Notes

When a router redistributes from one routing protocol to another, where does the router get the list of routes to redistribute?

From the routing table. Only IGP A’s routes (not topology or successors) are redistributed into IGP B’s domain.

Use a route-map in the redistribute line or a distribute-list.

The route-map method has more options. You can match on all sorts of stuff, including an ACL or interface, and filter based on that.