High Availability shows peer serial number unknown and no standby links
Article ID: 333924
Updated On:
Products
VMware
VMware SD-WAN by VeloCloud
Issue/Introduction
Symptoms:
In an Enhanced or Standard HA deployment the active SASE SD-WAN Edge might:
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
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.
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
For information on how to upgrade please check VMware SD-WAN Software Upgrade FAQs
Workaround:
Restarting the Active Edge in the HA pair will allow it to come back up normally.
5.2.0.0 (R5200-20230530-GA) or later
4.5.2 (R452-20230628-GA) or later
For information on how to upgrade please check VMware SD-WAN Software Upgrade FAQs
Workaround:
Restarting the Active Edge in the HA pair will allow it to come back up normally.
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