The Cisco switch must have Storm Control configured on all host-facing switchports.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-101245 | CISC-L2-000160 | SV-110349r1_rule | Low |
| Description |
|---|
| A traffic storm occurs when packets flood a LAN, creating excessive traffic and degrading network performance. Traffic storm control prevents network disruption by suppressing ingress traffic when the number of packets reaches a configured threshold levels. Traffic storm control monitors ingress traffic levels on a port and drops traffic when the number of packets reaches the configured threshold level during any one-second interval. |
| STIG | Date |
|---|---|
| Cisco NX-OS Switch L2S Security Technical Implementation Guide | 2020-05-07 |
Details
| Check Text ( C-100125r1_chk ) |
|---|
| Review the switch configuration to verify that storm control is enabled on all host-facing interfaces as shown in the example below: interface GigabitEthernet0/3 switchport access vlan 12 storm-control unicast unicast level 50.00 storm-control broadcast broadcast level 40 If storm control is not enabled at a minimum for broadcast traffic, this is a finding. |
| Fix Text (F-106949r1_fix) |
|---|
| Configure storm control for each host-facing interface as shown in the example below: SW1(config)#int range e0/2 – 8 SW1(config-if-range)# storm-control unicast level 50 SW1(config-if-range)# storm-control broadcast level 40 |