The Cisco switch must have Storm Control configured on all host-facing switchports.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| low | V-220687 | SRG-NET-000512-L2S-000001 | CISC-L2-000160 | SV-220687r539671_rule | 2024-08-22 | 3 |
| 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. |
| ℹ️ Check |
|---|
| 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 |
|---|
| 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 |