From: Richard Dumoulin (richard.dumoulin@vanco.es)
Date: Mon May 17 2004 - 15:24:47 GMT-3
Hello group,
Suppose the following topology:
R4 - -- ----- -- - R3
- -
- -
isdn--> - -
- R5
(Sorry for the bad drawing)
There is EIGRP between R4 and R3
And OSPF between R4-R5 and R5-R3.
There is also mutual redistribution on R4 and R3 between OSPF and EIGRP.
There is also IBGP between R4-R3-R5 full mesh.
The requirement is that BGP does not initiate the isdn line. So I have
configured R4-R5 BGP session between their respective loopbacks. Both
loopbacks are under OSPF.
I have made R4 prefer to go via R3 to reach R5's loopback with a distance
command.
I am trying to do the same with R5 but there is no way R5 will prefer an
external OSPF route from R3 over an Interarea route from R4 even if the
Interarea route has a higher admin distance !!!
The only way it works is to configure and admin distance of 255 for R4's
loopback if it comes from R4. but then if R4-R3 link breaks the peering
session between R4 and R5 won't work :((
Could anyone who has done this lab tell me how he did ?!?!?
Thank you
--Richard
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