From: Thorngren, Kevin (kevin_thorngren@xxxxxxxxxxx)
Date: Wed Jul 07 1999 - 14:27:52 GMT-3
I had the same type of problem. I don't remember all of the details or have
the configs currently. Here is what I remember:
I had routes that had a longer match (32 bit I think) in the routing table
but the summary had the same large metric as yours. I was also using a 24
bit mask on the summary statement. I changed the mask to a 23 bit mask and
the summary was injected into the routing table and had a small metric. Of
course this did not propagate into the IGRP network unless I changed all of
the subnet masks to 23 bit.
I have had other strange things happen with the summaries being in the
routing table. I would then make a change under router ospf 10 and the
summary would disappear. I could then add the summary back and the route
would reappear. Very strange.
I will try to recreate the configurations and supply more detail or maybe
even answer.
Thanks,
Kevin
-----Original Message-----
From: Ben Rife [mailto:brife@bignet.net]
Sent: Thursday, July 01, 1999 11:19 AM
To: ccielab@groupstudy.com
Subject: OSPF Summary
Hi Guys, I hope you can help me with this one.
Question: Why does the metric change on my summarized route in OSPF that I'm
redistributing to IGRP ?
As a result, it doesn't get sent out to the IGRP neighbors. If I enter the
command summary 170.50.3.0 255.255.255.0 again, It adds it to my route table
and sends it out IGRP, until I reload again...
Here's the config snippet:
router ospf 100
summary-address 170.50.5.0 255.255.255.0
summary-address 170.50.4.0 255.255.255.0
summary-address 1.1.1.0 255.255.255.0
summary-address 170.50.8.0 255.255.255.0
summary-address 170.50.3.0 255.255.255.0
redistribute static metric 20 subnets
redistribute igrp 100 metric 20 subnets
network 170.50.6.0 0.0.0.255 area 0
distribute-list 2 out igrp 100
distribute-list 1 in Serial0.1
Here's the "sh ip ospf summary"
OSPF Process 100, Summary-address
170.50.5.0/255.255.255.0 Metric -1, Type 0, Tag 0
170.50.4.0/255.255.255.0 Metric -1, Type 0, Tag 0
1.1.1.0/255.255.255.0 Metric -1, Type 0, Tag 0
170.50.8.0/255.255.255.0 Metric -1, Type 0, Tag 0
170.50.3.0/255.255.255.0 Metric 16777215, Type 0, Tag 0
After entering "summary 170.50.3.0 255.255.255.0" again, the metric is
changed:
170.50.5.0/255.255.255.0 Metric -1, Type 0, Tag 0
170.50.4.0/255.255.255.0 Metric -1, Type 0, Tag 0
1.1.1.0/255.255.255.0 Metric -1, Type 0, Tag 0
170.50.8.0/255.255.255.0 Metric -1, Type 0, Tag 0
170.50.3.0/255.255.255.0 Metric -1, Type 0, Tag 0
And it now is sent out to my IGRP neighbors.
Benjy Rife
MCSE, CNE, CCIE Candidate
brife@bignet.net <mailto:brife@bignet.net>
www.bignet.net/~brife <http://www.bignet.net/~brife>
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