From: Chua, Parry (Parry.Chua@xxxxxxxxxx)
Date: Sun Feb 24 2002 - 22:44:41 GMT-3
1.1.1.1/21 ??? should it be 1.1.0.0/21...
I think you should look at the whole topology prior to do summarization.
Every summarization
always create routing hole if it is not a full summarization.
Parry Chua
-----Original Message-----
From: Nicolai Gersbo Solling [mailto:nicolai@cisco.com]
Sent: Monday, February 25, 2002 3:20 AM
To: CCIE Lab
Subject: Tough nut to crack! Redistribution from EIGRP to OSPF and then
IGRP again!
Hi there fellowship of the (token) ring!
I have a weird problem - the one who can crack this one is up for a
virtual
round of beer on me...
(By virtual I mean...if we ever meet then I'll by you a beer)
Here is the setup:
EIGRP--->SENDING information about a summarized route of 1.1.1.1/21 via
ip
summary-address eigrp 1.1.1.1 255.255.248.0 on the connecting interface!
OSPF receives this route via redistribution and sees it like 1.1.1.1/21
- So
far so good!
OSPF redistributes into IGRP, which cannot understand the /21 mask and
discards the route...
I can see an easy solution with some static routes and then redistribute
them into OSPF or IGRP, but is there an more elegant way of doing this,
for
instance with something like a "summary-command" in ospf, or a range
command...
Any ideas greatly appreciated!
Nicolai
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