Symptom
Routes are learned through an L3Out that are not exported to the other Cisco ACI Multi-Site fabric. However, a local fabric imported the routes from the other site.
Conditions
This issue occurs after the local site is upgraded to the 5.1(3e) release. The issue is hit in sites other than Site 1. When the problem occurs, the tDn for fv.RsToRemoteLocalSiteCtxDef Mos will have site-1.
Workaround
1. Instp (E-EPG) deletion and re-addition. This is applicable, if this the only EPG in that context (VRF instance). You have tried this and it works.
2. If L3Out is stretched into multiple nodes, you could remove the problem node and re-add it back, if this is the only EPG in that VRF instance in that node.
3. If there are multiple InstPs, or AppEPGs in that context in that node, you need to remove all the EPGs and re-add. This would re-trigger problematic VRF instance re-deployment.
4. Another approach is to remove and re-deploy the problematic VRF instance.
