redstribute OSPF and BGP both ways

Unanswered Question
Apr 22nd, 2007

Can I redstribute BGP inside OSPF and at same time OSPF inside BGP on the smae router ?? It will creat any loop or slow ?

I have this problem too.
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mohammedmahmoud Sun, 04/22/2007 - 01:12

Hi there,

What you are asking about is called Mutual redistribution and its doable but it can cause routing loops so you must take care:

Mutual redistribution between protocols should be done very carefully and in a controlled manner. Incorrect configuration could lead to potential looping of routing information. A rule of thumb for mutual redistribution is not to allow information learned from a protocol to be injected back into the same protocol. (You can use any filtering method).

http://www.cisco.com/en/US/tech/tk365/technologies_white_paper09186a0080094e9e.shtml#t37

here you are also a nice post from the forum:

http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Network%20Infrastructure&topic=WAN%2C%20Routing%20and%20Switching&CommCmd=MB%3Fcmd%3Ddisplay_location%26location%3D.1dde3932

HTH,

Mohammed Mahmoud.

mohammedmahmoud Sun, 04/22/2007 - 01:52

Hi Andrea,

You are welcomed, the whole point from this forum is for us to share knowledge, and you have really replied nice on this issue, so we must all share your comment.

BR :)

Mohammed Mahmoud.

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