Richard Burts Fri, 06/20/2008 - 12:30


While EIGRP does have the concept of Autonomous System, it does not have the concept of Autonomous System Boundary Router.

In OSPF an ASBR is a router that redistributes from some protocol into OSPF. Certainly EIGRP routers can do the same function of redistributing from some protocol into EIGRP. But the routers in EIGRP that perform redistribution do not get categorized differently like OSPF does.

And while OSPF does have some restrictions about where an ASBR can be (can not be in a stub area, can not be in a totally stub area) EIGRP does not have any restrictions about which routers can do redistribution.



brianjpisa Fri, 06/20/2008 - 12:37

You can call a router running EIGRP that also connects to a different routing domain a AS boundry router. Off the top of my head, I can't remember any specific term for these types of routers in EIGRP. ASBR's in OSPF have this specific name and function due to the hiearchy area requirements and the specific ways the different types of LSAs are flooded throughout an OSPF routing domain.


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