The Cisco switch must have Storm Control configured on all host-facing switchports.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-220636 | CISC-L2-000160 | SV-220636r648763_rule | CCI-000366 | 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 IOS Switch L2S Security Technical Implementation Guide | 2024-06-06 | |||
Related Frameworks
4 paths across 3 frameworks
Related Frameworks
NIST 800-531 mapping
CM-6
1.00
- DISA · V3R1 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
NIST 800-1712 mappings
3.4.1
1.00
- DISA · V3R1 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
3.4.2
1.00
- DISA · V3R1 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
CCI1 mapping
CCI-000366
1.00
- DISA · V3R1 · disa_xccdf · related
Details
Check Text (C-220636r648763_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 level bps 62000000
storm-control broadcast level bps 20000000
Note: Bandwidth percentage thresholds (via level parameter) can be used in lieu of PPS rate.
If storm control is not enabled at a minimum for broadcast traffic, this is a finding.
Fix Text (F-22340r648762_fix)
Configure storm control for each host-facing interface as shown in the example below:
SW1(config)#int range g0/2 - 8
SW1(config-if-range)#storm-control unicast bps 62000000
SW1(config-if-range)#storm-control broadcast level bps 20000000
Note: The acceptable range is 10000000 -1000000000 for a gigabit Ethernet interface, and 100000000-10000000000 for a 10-gigabit interface. Storm control is not supported on most FastEthernet interfaces.