Redistributing Default route into EIGRP from OSPF

[srowles]

Hi

A quick question re the redistribution of a default route into EIGRP from OSPF.

If I am redistributing OSPF into EIGRP and a default route is generated and propogated by an OSPF router, will EIGRP automatically receive and propogate this default route throughout the EIGRP AS.

If the above is true I assume that I can block the redistribution of the default route into EIGRP using the following route map:

Route-map INTO-EIGRP-MAP deny 10

Match ip address INTO-EIGRP-LIST

Route-map INTO-EIGRP-MAP permit 20

Ip access-list standard INTO-EIGRP-LIST

Permit 0.0.0.0 0.0.0.0

Unfortunately I am not in a position where I can test this so I´m trying to confirm the functionality before I implement the redistribution on our live network.

[Harold Ritter · Accepted solution]

Yes, the route generated in the ospf domain would be redistributed in EIGRP by default.

Yes, the above route-map will block the redistribution of the default route into EIGRP.

Hope this helps,

[srowles]

Yes that does help alot. Thanks for the confirmation.

[gaurav.prakash]

Can we also use the distribute list inward to prevent default route being redistributed into EIGRP?

[srowles]

I believe that using a distribute list inward under the OSPF process would also prevent the default route being redistributed into EIFRP as the distribute list would prevent the route from being added to the route table of the router in question and as routes are redistributed from the routing table, this should work.

Tha distribute list under the OSPF process would not however prevent the route from being passed to other OSPF routers as a dstribute list does not affect the flooding of LSAs.