Keep OSPF prefix tag across VRFs in ACI

[Antonio Macia]

Hi, 

I have two different tenants with a VRF on each one and a tag assigned at the VRF level. All the prefixes generated in a particular VRF are tagged. When the prefixes originated in one VRF are learned by the other VRF, the tag is overwritten. Is it possible to keep the tag imposed in the original VRF?

In a nutshell, what I'm trying to achieve is that the L3 device interconnecting both VRFs do not learn prefixes originally originated on the VRF1 coming in from VRF2 to avoid route flapping using a simple route-map that matches tags.

Thanks.

[MHM Cisco World]

But as I remember you confirm that ACI match dont use tag.

So if you set tag one vrf you can not match it on other vrf.

If I am correct 

MHM

[Antonio Macia]

Hi,

I would perform the route tag match on the intermediate L3 device which allows me to math on OSPF tags, but for that the original tag must remain intact.