Deployment Guide

Parameters
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, see 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
9.9(0.0) Introduced on the C9010.
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).
Internet Group Management Protocol (IGMP)
877