Detections
Analytics
JUEX-RT-000670 - The Juniper PE router must be configured to implement Internet Group Management Protocol (IGMP) or Multicast Listener Discovery (MLD) snooping for each Virtual Private LAN Services (VPLS) bridge domain.
Information
IGMP snooping provides a way to constrain multicast traffic at layer 2. By monitoring the IGMP membership reports sent by hosts within the bridge domain, the snooping application can set up layer 2 multicast forwarding tables to deliver traffic only to ports with at least one interested member within the VPLS bridge, thereby significantly reducing the volume of multicast traffic that would otherwise flood an entire VPLS bridge domain. The IGMP snooping operation applies to both access circuits and pseudowires within a VPLS bridge domain.Solution
Configure IGMP or MLD snooping for IPv4 and IPv6 multicast traffic respectively for each VPLS bridge domain.set routing-instances <name> protocols igmp-snooping vlan <vlan ID>
set routing-instances <name> protocols mld-snooping vlan <vlan ID>
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Juniper_EX_Switches_Y26M07_STIG.zip
Item Details
Audit Name: DISA Juniper EX Series Switches Router STIG v2r1
Category: SYSTEM AND COMMUNICATIONS PROTECTION
References: 800-53|SC-5, CAT|III, CCI|CCI-002385, Rule-ID|SV-254039r844150_rule, STIG-ID|JUEX-RT-000670, Vuln-ID|V-254039
Plugin: Juniper
Control ID: f764b62516c2a614b9a6b89ef7bc863ae8245c120039bdaeb3188e01a1fcff70