STIGQter: STIG Summary: Cisco NX-OS Switch RTR Security Technical Implementation Guide Version: 2 Release: 1 Benchmark Date: 23 Apr 2021:

The Cisco PE switch providing Virtual Private LAN Services (VPLS) must be configured to have traffic storm control thresholds on CE-facing interfaces.

DISA Rule

SV-221123r622190_rule

Vulnerability Number

V-221123

Group Title

SRG-NET-000193-RTR-000002

Rule Version

CISC-RT-000700

Severity

CAT II

CCI(s)

• CCI-001095 - The information system manages excess capacity, bandwidth, or other redundancy to limit the effects of information flooding types of denial of service attacks.

Weight

10

Fix Recommendation

Configure storm control for each CE-facing interface as shown in the example below:

SW1(config)# int e2/4
SW1(config-if)# storm-control broadcast level 40
SW1(config-if)# end

Check Contents

Review the switch configuration to verify that storm control is enabled on CE-facing interfaces deploying VPLS as shown in the example below:

interface Ethernet2/4
no shutdown
no switchport
storm-control broadcast level 40.00
service instance 1 ethernet
encapsulation dot1q 100

If storm control is not enabled at a minimum for broadcast traffic, this is a finding.

Vulnerability Number

V-221123

Documentable

False

Rule Version

CISC-RT-000700

Severity Override Guidance

Review the switch configuration to verify that storm control is enabled on CE-facing interfaces deploying VPLS as shown in the example below:

interface Ethernet2/4
no shutdown
no switchport
storm-control broadcast level 40.00
service instance 1 ethernet
encapsulation dot1q 100

If storm control is not enabled at a minimum for broadcast traffic, this is a finding.

Check Content Reference

M

Target Key

4075

Comments