A cry for redistribution help! VLSM /28 into FLSM /24 (summary-ad dress)

From: Jim Brown (Jim.Brown@xxxxxxxxxxxxx)
Date: Fri Aug 17 2001 - 18:52:49 GMT-3


   
On my quest for redistribution knowledge, this has escaped me.

I have searched high and low, through the archives, in Usenet, and on the
Cisco web site to no avail.

This discussion has gone on forever and I cannot replicate it with any
consistency.

How do you use the summary-address command at the redistribution point to
summarize longer masks into shorter masks?

Everyone tells me it works, but not for me. Am I missing something? Are
there gothcas escaping me?

I'm throwing in the towel and begging for help. I pray the redistribution
Gods will smile on me and offer enlightenment.

Scenario in question:

Area0--R1--Area1--R2--IGRP--R3

I have a couple of LoopBack interfaces in Area 0 with a /30. I attempting to
summarize them in to a /24 for successful redistribution into IGRP. I apply
the summary-address command on R2, but they won't appear in the R2 IGRP
update, or on R3 if you could imagine that.

I know the summary-address command is documented for summarization INTO OSPF
on an ASBR, but there is so much talk about using it in the reverse that I
feel left out of the party.

I know I can use an area range command on an ABR for summarization upstream.

I know I can inject a default route into the FLSM to provide reachability.

All this I know, but what I want to use is the summary-address command.
HELP!
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