From: Connary, Julie Ann (jconnary@xxxxxxxxx)
Date: Tue Jan 23 2001 - 11:37:25 GMT-3
Hi All,
I ran across a practice lab and another fat-kid lab that use the ospf
summary-address to overcome
vlsm to fsm issues when redistributing ospf into igrp:
situation: The ospf connected interface has a longer mask than the IGRP
connected interface.
area-range does not work because it is on the same router.
The Fatkid lab - expert redistribution - solves this with a summary-a
ddress.
Question - does this not inject E2 routes back into your OSPF domain?
OSPF area 2
170.10.128.4 - 255.255.255.192
|
|
|
R4 -----------IGRP - 170.10.2.4 255.255.255.0
To redistribute the ospf interface into IGRP a summary-address is
used: summary-address 170.10.128.0 255.255.255.0
But then in the ospf domain you get an E2 route to 170.10.128.0 in your
ospf domain.
So how do you prevent this E2 route into OSPF - can you filter it?
Thoughts?
remember - no static, no default.
Julie Ann
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Julie Ann Connary
| | Network Consulting Engineer
||| ||| Federal Support Program
.|||||. .|||||. 13635 Dulles Technology Drive,
Herndon VA 20171
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c i s c o S y s t e m s Email: jconnary@cisco.com
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