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XCCDF
VMware vSphere 7.0 ESXi Security Technical Implementation Guide
SRG-OS-000480-VMM-002000
All port groups on standard switches must not be configured to virtual local area network (VLAN) values reserved by upstream physical switches.
All port groups on standard switches must not be configured to virtual local area network (VLAN) values reserved by upstream physical switches.
An XCCDF Rule
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All port groups on standard switches must not be configured 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 the documentation for the specific switch in use. 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>