Detections
Analytics

1.14 CISC-L2-000170

Information

The Cisco switch must have IGMP or MLD Snooping configured on all VLANs.

GROUP ID: V-220688
RULE ID: SV-220688r539671

IGMP and MLD snooping provides a way to constrain multicast traffic at Layer 2. By monitoring the IGMP or MLD membership reports sent by hosts within a VLAN, the snooping application can set up Layer 2 multicast forwarding tables to deliver specific multicast traffic only to interfaces connected to hosts interested in receiving the traffic, thereby significantly reducing the volume of multicast traffic that would otherwise flood the VLAN.

Solution

Configure IGMP or MLD snooping for IPv4 and IPv6 multicast traffic respectively globally.

SW1(config)# ip igmp snooping

See Also

https://workbench.cisecurity.org/benchmarks/23772

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|III, CCI|CCI-000366, Rule-ID|SV-220688r539671_rule, STIG-ID|CISC-L2-000170, Vuln-ID|V-220688

Plugin: Cisco

Control ID: b4b4bf22929e2143b0d309ab3357d73b717af99d35ffeb37dda3a127e727a55e