The physical link goes down after changing the uplink profile from LAG to multiple TEP on a Bare Metal Edge

Products

• VMware NSX

Issue/Introduction

• Bare metal edge has been configured with a LAG (LACP) uplink profile.
• The physical link goes down after changing the uplink profile to Multi-TEP. Datapath connectivity is affected and the tunnels are down.
• You observe log entries similar to below within the bare metal edge's var/log/syslog file. There is no corresponding port "up" event observed.  

2025-04-16T07:36:40.083Z nsx-manager01.example.com NSX 9408 FABRIC [nsx@6876 comp="nsx-edge" subcomp="datapathd" s2comp="phys-port" tname="dp-ipc47" level="WARN"] [mgmt lsn] DPDK LSN, Port 1 is down

Environment

NSX-T Data Center 3.X

NSX 4.X till 4.2.1.2 EP

Cause

When the initial profile is configured, a bond is formed and physical-ports become members of this bond. Once the profile changes, the members are not being reset which is causing the physical-ports to be down thus, impacting the datapath.

Resolution

The issue has been resolved in NSX versions 4.2.1.3 EP and 9.0

Workaround:

Restarting datapath resolves the issue:

restart service dataplane