On Aug 5, 2009, at 9:57 PM, Jared Gillis wrote:
Basically I'm trying to replicate the concept of an OSPF
totally-stubby-not-so-stubby-area in IS-IS, and I'm starting to
question whether
it can be done. My network design is fairly flexible at this point
(the only
requirements are that it run IS-IS and L1 routers don't learn each
other's
routes), so I'm open to any ideas or suggestions.
have a look at IS-IS mesh-groups. Although designed for a different
purpose, it might work. Stick router A and all of its stub routers
into the same L1 area. On router A, put all interfaces towards the
stub routers in the same mesh-group.
PS. My preference would be to use BGP for the external routes and use
IS-IS only to the distribute loopback IPs. Also makes filtering
towards the stub routers a lot easier using route-maps etc. Depending
on your gear/software/etc that might not be an option here though.
--Daniel.
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