ISIS & route filters

[kevin.hart]

Hi

How do you filter routes under isis

i.e. distribute-list <access-list> in|out

This command is not available

Tried this on 122-x and 123.x

[ruwhite]

You can't filter routes using distribute lists or route maps in IS-IS. You can filter LSP's:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fipr_c/ipcprt2/1cfisis.htm#34583

But not routes based on prefixes.

Russ.W

[aretana]

It's important to add that all the routers in a domain (area) must be synchronized. In other words, while LSP filtering is possible, use with care!! =:-)

Alvaro.

[kevin.hart]

Any plans to add this feature?

With OSPF I can filter routes from entering the routing table but LSAs are still flooded.

[ruwhite]

There's no plans to add this to IS-IS.

Russ.W