Reference Guide

group (OPTIONAL) Enter the multicast group address in the form A.B.C.D to display the
list of sources to which this group is mapped.
Command Modes
● EXEC
● EXEC Privilege
Command
History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.7(0.0) Added support for VRF. Introduced on the S6000-ON.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
7.8.1.0 Introduced on the C-Series and S-Series.
7.7.1.0 Introduced on the E-Series.
Example
Dell#show ip igmp ssm-map
Interface Vlan 20
Group 232.1.1.5
Uptime 00:11:22
Expires Never
Router mode INCLUDE
Last reporter 35.0.0.2
Group source list
Source address Expires
65.0.0.1 00:01:22
65.0.0.2 00:01:22
65.0.0.3 00:01:22
65.0.0.4 00:01:22
65.0.0.5 00:01:22
Related
Commands
ip igmp ssm-map — uses a statically configured list to translate (*,G) memberships to (S,G)
memberships.
IGMP Snooping Commands
IGMP Snooping version 2 and 3 are supported on the switch.
Important Points to Remember for IGMP Snooping
● The Dell Networking OS supports version 1, version 2, and version 3 hosts.
● The IGMP snooping implementation is based on IP multicast address (not based on Layer 2 multicast mac address) and the
IGMP snooping entries are in Layer 3 flow table not in Layer 2 forwarding information base (FIB).
● The IGMP snooping implementation is based on draft-ietf-magma-snoop-10.
● The system supports IGMP snooping on JUMBO-enabled cards.
● IGMP snooping is not enabled by default on the switch.
● A maximum of 1800 groups and 600 VLAN are supported.
● IGMP snooping is not supported on a default VLAN interface.
● IGMP snooping is not supported over VLAN-Stack-enabled VLAN interfaces (you must disable IGMP snooping on a VLAN
interface before configuring VLAN-Stack-related commands).
● IGMP snooping does not react to Layer 2 topology changes triggered by spanning tree protocol (STP).
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Internet Group Management Protocol (IGMP)