OSPF Summary

From: Ben Rife (brife@xxxxxxxxxx)
Date: Thu Jul 01 1999 - 14:18:44 GMT-3

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   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
   www.bignet.net/~brife

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