When configuring ESXi hosts in NSX-T "Some error has occurred in service insertion module. (Error code: 9539)"

Products

• VMware NSX

Issue/Introduction

Symptoms:

• When installing or reconfiguring VMware NSX-T on an ESXi host using a VDS host switch, you see the error "Some error has occurred in service insertion module. (Error code: 9539)"
• In the /var/log/proton/nsxapi.log file on an NSX-T manager, you see entries similar to:

2021-03-31T10:48:17.494Z  WARN http-nio-127.0.0.1-7440-exec-5 DVSFinderImpl 14528 FABRIC [nsx@6876 comp="nsx-manager" level="WARNING" reqId="cf2e0a22-####-####-####-########ca0e" subcomp="manager" username="admin"] Multiple DVS objects found with same VC UUID 51 06 15 ## 43 8a ## 87-82 18 6b ## 4e 93 ## 3a, switches size 2
2021-03-31T10:48:17.494Z ERROR http-nio-127.0.0.1-7440-exec-5 SwitchingValidator 14528 SWITCHING [nsx@6876 comp="nsx-manager" errorCode="MP9539" level="ERROR" reqId="cf2e0a22-####-####-####-########a0e" subcomp="manager" username="admin"] Multiple VDS found by UUID : 51 06 15 09 ## 8a 59 87-## 18 6b c5 ## 93 f6 3a.
2021-03-31T10:48:17.494Z ERROR http-nio-127.0.0.1-7440-exec-5 JsonRpcErrorResolver 14528 - [nsx@6876 comp="nsx-manager" errorCode="MP100" level="ERROR" subcomp="manager"] Error discovered by JSON RPC 
 com.vmware.nsx.management.switching.common.exceptions.SwitchingException: null
        at com.vmware.nsx.management.switching.common.SwitchingValidator.getDvsByHostSwitchId(SwitchingValidator.java:997) ~[libnsx-switching.jar:?]

Note: The preceding log excerpts are only examples. Date, time, and environmental variables may vary depending on your environment.

Environment

VMware NSX-T Data Center

Cause

The issue occurs when vCenter has more than one VDS with the same UUID.

Resolution

NSX-T expects a unique VDS UUID on each vCenter.

Workaround:
Please make sure there are no duplicate VDS' on vCenter. You may need to create a new one and use that for NSX-T or remove the duplicate VDS.