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XCCDF
VMware vSphere 8.0 vCenter Security Technical Implementation Guide
SRG-APP-000516
The vCenter Server must not configure all port groups to virtual local area network (VLAN) values reserved by upstream physical switches.
The vCenter Server must not configure all port groups to virtual local area network (VLAN) values reserved by upstream physical switches.
An XCCDF Rule
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The vCenter Server must not configure all port groups to virtual local area network (VLAN) values reserved by upstream physical switches.
Medium Severity
<VulnDiscussion>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 to 1024 and 4094, while Nexus switches typically reserve 3968 to 4094. Check with the documentation for the organization's specific switch. Using a reserved VLAN might result in a denial of service on the network.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>