I have a situation where I need to prevent EIGRP routing updates being received by my local network routers from an other router that I have no control over, however I still want to receive updates of all the external routes from this other router. My network is on 172.19.0.0/16 which is variably subnetted into 21 subnets and 5 masks.
Firstly congratulations on your CCIE, just read about it on the forum, good work.
So I have tried to lab this out on another router and have managed to work out the distribute-list to filter out unwanted networks. In my situation I have two routers, one being my core router and another device that acts as a backup network running EIGRP on AS 2000 so I need these two devices to exchange routing updates so my question is how would I filter out updates for only the foreign router, does this make sense?
I can't imagine your full scenario, especially this part "and another device that acts as a backup network running EIGRP on AS 2000" and this part "I need these two devices to exchange routing updates so my question is how would I filter out updates for only the foreign router", if you may please elaborate more, mainly how are they connected and how is the foreign router connected to them.
With the distribute-list you can control which specific routes (prefix) to be filtered from which specific routers (gateway).
Router(config-router)#distribute-list prefix <> gateway <> in
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...