Service Interface route is deleted from T0 after Standby T1 is relocated to another Edge

Products

• VMware NSX

Issue/Introduction

• T0 is connected to T1
• T1 is configured in Active/Standby
• Standby Relocation is enabled on T1
• Route is advertised to T0
  • Networking > Tier-1 Gateways > [T1] > Route Advertisement > All Connected Segments & Service Ports
• The Edge on which the Standby T1 is located fails or is powered down
• The Standby T1 relocates to another Edge after a set time. Default is 30 minutes
  • Relocation timer is configured via System > Fabric > Profiles > Edge Cluster Profiles > Stand By Relocation Threshold
• The route is no-longer present in the T0 routing table.
  • get logical-router [T0 UUID] route
• North/South traffic is affected
• Active T1 Edge logs shows the route is deleted for the Service Interface only

/var/log/syslog
[Timestamp] [Edge]1 NSX 1 FABRIC [nsx@6876 comp="nsx-edge" subcomp="nsxa" s2comp="nestdb-lrouter" level="INFO"] FIB delete [Route] for lrouter [UUID] deleted

 

Environment

NSX 3.2.x, 4.x

Resolution

This issue is resolved in NSX 3.2.4 and 4.1.1

 

Workaround:

To readvertise the route run the following API call.

POST https://<mgr-ip>/policy/api/v1/infra/tier-1s/<t1-id>?action=reprocess&enforcement_point_path=/infra/sites/default/enforcement-points/default