High Availability shows peer serial number unknown and no standby links
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Article ID: 333924
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Updated On:
Products
VMwareVMware SD-WAN by VeloCloud
Issue/Introduction
Symptoms: In an Enhanced or Standard HA deployment the active SASE SD-WAN Edge might:
Show unknown value in the "peer serial number" section.
Fail to detect links on the standby Edge.
Fail to route traffic through the Standby Edge WAN links.
Environment
VMware SD-WAN VMware SD-WAN by VeloCloud
Cause
This issue is caused by defect id: 110564. The problem is seen when a child process takes over the TCP port used for Active-Standby communication, leading to TCP session to fail and HA information not being exchanged as expected.
Resolution
The fix is included in SASE SD-WAN Edge software releases: 5.2.0.0 (R5200-20230530-GA) or later 4.5.2 (R452-20230628-GA) or later