OSPF Summary Address for E2 routes?

From: James_Hawkins@xxxxxxxxxxxxxxxxx
Date: Sun Sep 09 2001 - 08:45:08 GMT-3


   
Hi all,

I am practising some redistribution scenarios and have found an issue that
hopefully someone can shed some light on.

I have redistributed route 133.33.12.0/30 from EIGRP into OSPF. The route
appears on all OSPF routers as a type E2 which is what I would expect. I am the
n
redistributing OSPF into IGRP on another router. As IGRP is classful and the
redistribution router has directly connected 133.33.x.x networks with a /24
mask I configured the summary-address 133.33.12.0 255.255.255.0 command under
the OSPF process.

The route is not redistributed into IGRP - can see this by using debug IGRP
transactions. Another /30 route 133.33.15.0 which is learnt directly from OSP
F
- not redistributed into it from EIGRP - is redistributed into IGRP successfull
y
through the use of the summary-address 133.33.15.0 255.255.255.0

Is it standard behaviour for OSPF that external routes cannot be summarised whe
n
being redistributed into another protocol? Any ideas how to solve this?

thanks

James
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