11-28-2012 05:51 AM - edited 03-04-2019 06:15 PM
Hi
I have a VRF which has 3 directly connected networks. Each network can route to each other, however I want X to route to Y and Z to route to Y.
How can I stop X routing to Z?
Thanks
Si
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11-28-2012 06:17 AM
Hi Simon,
Did I understood that you have a PE with one VRF (say TEST1) and have 3 interfaces configured as part of this VRF?. And you are looking for way to have network X allowed to Y but not to Z. Similarly Z is allowed to talk to Y but not to X?.
If so, X, Y and Z are CE devices or is it just stub networks?.
If it is stub networks, you have to use ACL and filter the traffic inbound at interface connecting X and Y networks.
If it is CE you may try using differnet routing protocol or different process (for instance OSPF) and limit the redistribution.
HTH,
Nagendra
11-28-2012 06:03 AM
I would think you're going to want to look at import maps under the vrf. You can specify which routes you want to import into the vrf. It's basically a policy map identifying the networks you want. I haven't tested but I believe this is what you'll want.
Hth,
John
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Sent from Cisco Technical Support iPhone App
11-28-2012 06:17 AM
Hi Simon,
Did I understood that you have a PE with one VRF (say TEST1) and have 3 interfaces configured as part of this VRF?. And you are looking for way to have network X allowed to Y but not to Z. Similarly Z is allowed to talk to Y but not to X?.
If so, X, Y and Z are CE devices or is it just stub networks?.
If it is stub networks, you have to use ACL and filter the traffic inbound at interface connecting X and Y networks.
If it is CE you may try using differnet routing protocol or different process (for instance OSPF) and limit the redistribution.
HTH,
Nagendra
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