Users Guide

Version Description
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Added support for VRF. Introduced on the S6000-ON.
9.5(0.1) Introduced on the Z9500.
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 — use a statically configured list to translate (*,G) memberships to (S,G)
memberships.
IGMP Snooping Commands
Dell Networking OS supports IGMP Snooping version 2 and 3 on all Dell Networking systems.
Important Points to Remember for IGMP Snooping
● Dell Networking OS supports version 1, version 2, and version 3 hosts.
● Dell Networking OS 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).
● Dell Networking OS IGMP snooping implementation is based on draft-ietf-magma-snoop-10.
● Dell Networking OS 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).
● IGMP snooping reacts to Layer 2 topology changes multiple spanning tree protocol (MSTP) triggers by sending a general
query on the interface that comes in the FWD state.
Important Points to Remember for IGMP Querier
● The IGMP snooping Querier supports version 2.
602
Internet Group Management Protocol (IGMP)