From: Jeff Nelson (jnelson@rackspace.com)
Date: Tue Jan 06 2004 - 14:19:18 GMT-3
The DOC cd is a little light on this issue...
I was experimenting with solving a route distribution issue and stumbled across this:
I have an ISIS stub network with a 10.1.1.1/24 loopback and the object is to have the classful /8 int the routing table of some router (isis-ospf-eigrp) away without using any summary-addressing. What ended up working was making the isis loopback passive under the router isis and thus it advertises it classful, which propagates through redistribution the same way.
That's great and all, but area there any side affects? The only thing I can really find about passive-interface on ISIS is that it advertises it as metric 0 and apparently (now) classful as well. What else? It seems counter-intuitive to other IGPs and how they use passive-interface.
--j
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