ESXI-65-000065 - For the ESXi host all port groups must not be configured to VLAN values reserved by upstream physical switches.

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Information

Certain physical switches reserve certain VLAN IDs for internal purposes and often disallow traffic configured to these values. For example, Cisco Catalyst switches typically reserve VLANs 1001-1024 and 4094, while Nexus switches typically reserve 3968-4047 and 4094. Check with the documentation for your specific switch. Using a reserved VLAN might result in a denial of service on the network.

Solution

From the vSphere Web Client select the ESXi Host and go to Configure >> Networking >> Virtual switches. Highlight a port group (where VLAN ID set to 4095) and click Edit settings (pencil). Change the VLAN ID to not be a reserved VLAN ID and click OK.

or

From a PowerCLI command prompt while connected to the ESXi host run the following command:

Get-VirtualPortGroup -Name 'portgroup name' | Set-VirtualPortGroup -VLanId 'New VLAN#'

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_VMW_vSphere_6-5_Y21M10_STIG.zip

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6, CAT|II, CCI|CCI-000366, Rule-ID|SV-207664r388482_rule, STIG-ID|ESXI-65-000065, STIG-Legacy|SV-104163, STIG-Legacy|V-94077, Vuln-ID|V-207664

Plugin: VMware

Control ID: 87d40a603fd7726391fe35d15bd3ffc4647aca3c3737ef52d3e69a5838008420