The vCenter Server must not configure all port groups to virtual local area network (VLAN) values reserved by upstream physical switches.
An XCCDF Rule
Description
<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>
- ID
- SV-258941r961863_rule
- Severity
- Medium
- References
- Updated
Remediation - Manual Procedure
From the vSphere Client, go to "Networking".
Select a distributed switch >> Select a distributed port group >> Configure >> Settings >> Policies.
Click "Edit".