ECS: After upgrade or deployment to Dell OS switch version 10.4.3.6, ECS xDoctor reports "Detected VLT port channel down on switch"

Summary: After upgrade to Dell OS switch version 10.4.3.6 on an EX300/EX500/EX3000 series of ECS; xDoctor reports "Detected VLT port channel down on switch".

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Symptoms

This can impact the EX300/EX500/EX3000 series if the post upgrade is not done on the switches after upgrade or deployment on ECS 3.4.

After upgrade to ECS 3.4 or later on an EX300/EX500/EX3000 series of ECS, xDoctor reports "Detected VLT port channel down on switch".

xDoctor Reports:    

Timestamp    = 2019-11-21_015457
    Category = Environment
    Source   = Switch
    Severity = WARNING
    Node     = 169.XXX.X.1
    Message  = RAP092 - Detected VLT port channel down on switch. (RAP already reported)
    Extra    = {'hare': {'port_channels': {'1': {'units': ['2']}, '3': {'units': ['1']}, '2': {'units': ['1']}, '5': {'units': ['1']}, '4': {'units': ['1']}, '7': {'units': ['1']}, '6': {'units': ['1']}}},
 'rabbit': {'port_channels': {'1': {'units': ['2']}, '3': {'units': ['1']}, '2': {'units': ['1']}, '5': {'units': ['1']}, '4': {'units': ['1']}, '7': {'units': ['1']}, '6': {'units': ['1']}}}}

Note: If the version is below Dell OS switch version 10.4.3.6, this KB does not apply and the issue is detailed in the following KB  ECS: xDoctor RAP092: slave-X or pslave-X is not communicating with the ToR switches after a node reboot

Cause

A switch configuration is missing on one or all ECS switches after a switch upgrade/replacement was done during the ECS 3.4 cluster upgrade.

Resolution

Raise a service request with Dell support to resolve this issue mentioning this KB.

Affected Products

ECS Appliance Hardware Gen3 EX300

Products

ECS Appliance Hardware Gen3 EX300, ECS Appliance Hardware Gen3 EX3000, ECS Appliance Hardware Gen3 EX500
Article Properties
Article Number: 000078710
Article Type: Solution
Last Modified: 30 Sept 2025
Version:  5
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