The Cisco PE switch providing Virtual Private LAN Services (VPLS) must be configured to have traffic storm control thresholds on CE-facing interfaces.
An XCCDF Rule
Description
<VulnDiscussion>A traffic storm occurs when packets flood a VPLS bridge, creating excessive traffic and degrading network performance. Traffic storm control prevents VPLS bridge disruption by suppressing traffic when the number of packets reaches configured threshold levels. Traffic storm control monitors incoming traffic levels on a port and drops traffic when the number of packets reaches the configured threshold level during any one-second interval.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-221044r622190_rule
- Severity
- Medium
- References
- Updated
Remediation - Manual Procedure
Configure storm control for each CE-facing interface as shown in the example below:
SW1(config)#int g3
SW1(config-if)#service instance 10 ethernet
SW1(config-if-srv)#storm-control broadcast cir 12000000
SW1(config-if-srv)#end