Details
Ensure that port groups are not configured to VLAN values reserved by upstream physical
switches
*Rationale*
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 through 1024 and 4094, while Nexus switches typically reserve 3968
through 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.
NOTE: Nessus has not performed this check. Please review the benchmark to ensure target compliance.
Solution
VLAN ID setting on all port groups should not be set to reserved values of the physical
switch.Additionally, the following PowerCLI command may be used-# List all vSwitches, their Portgroups and VLAN Ids
Get-VirtualPortGroup -Standard | Select virtualSwitch, Name, VlanID
Supportive Information
The following resource is also helpful.
This control applies to the following type of system VMware.