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XCCDF
Cisco IOS Switch L2S Security Technical Implementation Guide
SRG-NET-000512-L2S-000009
SRG-NET-000512-L2S-000009
An XCCDF Group - A logical subset of the XCCDF Benchmark
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SRG-NET-000512-L2S-000009
1 Rule
<GroupDescription></GroupDescription>
The Cisco switch must have the default VLAN pruned from all trunk ports that do not require it.
Medium Severity
<VulnDiscussion>The default VLAN (i.e., VLAN 1) is a special VLAN used for control plane traffic such as Spanning-Tree Protocol (STP), Dynamic Trunking Protocol (DTP), VLAN Trunking Protocol (VTP), and Port Aggregation Protocol (PAgP). VLAN 1 is enabled on all trunks and ports by default. With larger campus networks, care must be taken about the diameter of the STP domain for the default VLAN. Instability in one part of the network could affect the default VLAN, influencing control-plane stability and therefore STP stability for all other VLANs.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>