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The Juniper EX switch must be configured to enable IGMP or MLD Snooping on all VLANs.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-253963JUEX-L2-000160SV-253963r843922_ruleCCI-000366low
Description
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.
STIGDate
Juniper EX Series Switches Layer 2 Switch Security Technical Implementation Guide2026-06-03

Related Frameworks

1 mapping across 5 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (8) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

CFG-01Configuration Management Program
1.00
END-01Endpoint Device Management (EDM)
1.00
END-04Malicious Code Protection (Anti-Malware)
1.00
END-06Endpoint File Integrity Monitoring (FIM)
1.00
MON-01Continuous Monitoring
1.00
MON-01.7File Integrity Monitoring (FIM)
1.00
CFG-02Secure Baseline Configurations
0.50
CFG-02.7Approved Configuration Deviations
0.50
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (100) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-12Session Termination
1.00
AC-16(1)Dynamic Attribute Association
1.00
AC-17(1)Monitoring and Control
1.00
AC-2Account Management
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(11)Usage Conditions
1.00
AC-2(3)Disable Accounts
1.00
AC-2(4)Automated Audit Actions
1.00
AC-24(1)Transmit Access Authorization Information
1.00
AC-25Reference Monitor
1.00

+90 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (2) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.4.1
1.00
3.4.2
1.00
CCI1 mapping
CCI-000366
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (5) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

DE.CM-09
1.00
PR.PS-01
1.00
PR.DS-10
0.50
PR.PSPlatform Security
0.50
PR.PS-05
0.50

Who does this work

10 NICE work roles and 9 EC-Council certifications.

This is an inference across published mappings, not a single claim by anyone. This check maps to a control, which maps to a Cybersecurity Framework outcome, which NIST assigns to the work roles below. EC-Council separately maps its certifications to those same roles.

A certification prepares someone for a role. It is not evidence that a holder is qualified, and neither NIST nor EC-Council has stated that any certification here addresses this check.

Work-role assignments published by NIST (NICE Framework Components 2.2.0 and the CSF 2.0 OLIR crosswalk). Certification mappings published by EC-Council.

Details

Check Text (C-253963r843922_chk)

Review the switch configuration to verify that IGMP or MLD snooping has been configured for IPv4 and IPv6 multicast traffic respectively. Verify IGMP and MLD is globally configured for all VLANs: [edit protocols] igmp-snooping { vlan all { immediate-leave; interface <multicast router interface name>.<logical unit> { multicast-router-interface; } } } mld-snooping { vlan all { immediate-leave; interface <multicast router interface name>.<logical unit> { multicast-router-interface; } } } For VLAN-specific values, verify IGMP and MLD snooping is configured for each VLAN: [edit protocols] igmp-snooping { vlan vlan-name { immediate-leave; interface <multicast router interface name>.<logical unit> { multicast-router-interface; } interface <host interface name>.<logical unit> { host-only-interface; } } } mld-snooping { vlan vlan-name { immediate-leave; interface <multicast router interface name>.<logical unit> { multicast-router-interface; } interface <host interface name>.<logical unit> { host-only-interface; } } } If the switch is not configured to implement IGMP or MLD snooping for each VLAN, this is a finding.

Fix Text (F-57366r843921_fix)

Configure IGMP or MLD snooping for IPv4 and IPv6 multicast traffic respectively for each VLAN. Global: set protocols igmp-snooping vlan all immediate-leave set protocols igmp-snooping vlan all interface <multicast router interface name>.<logical unit> multicast-router-interface set protocols mld-snooping vlan all immediate-leave set protocols mld-snooping vlan all interface <multicast router interface name>.<logical unit> multicast-router-interface Per VLAN: set protocols igmp-snooping vlan vlan-name immediate-leave set protocols igmp-snooping vlan vlan-name interface <multicast router interface name>.<logical unit> multicast-router-interface set protocols igmp-snooping vlan vlan-name interface <host interface name>.<logical unit> host-only-interface set protocols mld-snooping vlan vlan-name immediate-leave set protocols mld-snooping vlan vlan-name interface <multicast router interface name>.<logical unit> multicast-router-interface set protocols mld-snooping vlan vlan-name interface <host interface name>.<logical unit> host-only-interface