Disabling SFP1 on SD-WAN Edge 6x0 stops traffic on SFP2

Products

• VMware
• VMware SD-WAN by VeloCloud

Issue/Introduction

Symptoms:
On VMware SD-WAN Edge models 610, 620, 640, and 680, the SFP2 interface may stop receiving packets after changing the configuration of SFP1

The following conditions must be met:

1. The edge must be part of the 6x0 line
2. SFP1 was originally configured as a routed port
3. SFP1 is either disabled or configured as switched port

Once these conditions are met, the SFP2 interface stops receiving packets.

Environment

VMware SD-WAN by VeloCloud
VMware SD-WAN

Cause

This is caused by known issue #99215

Resolution

This issue is resolved in the following Edge Versions:

• 4.5.2 (R452-20230628-GA)
• 5.2.0.0 (R5200-20230530-GA)

For information on how to upgrade please check the following article: VMware SD-WAN Software Upgrade FAQs

Workaround:
There are two methods to stabilize the edge again:

• Reboot the Edge after disabling SFP1
• Convert SFP1 to a switched interface to prevent future issues.

Note: only 1 method has to be applied.