Reference Guide

Internet Group Management Protocol (IGMP) | 551
show ip igmp ssm-map
c e s
Display is a list of groups that are currently in the IGMP group table and contain SSM mapped sources.
Syntax
show ip igmp ssm-map [group]
Parameters
Command Modes
EXEC
EXEC Privilege
Command
History
Related
Commands
IGMP Snooping Commands
FTOS supports IGMP Snooping version 2 and 3 on all Dell Networking systems:
• ip igmp snooping enable
• ip igmp snooping fast-leave
• ip igmp snooping flood
• ip igmp snooping last-member-query-interval
• ip igmp snooping mrouter
• ip igmp snooping querier
• show ip igmp snooping mrouter
Important Points to Remember for IGMP Snooping
• FTOS supports version 1, version 2, and version 3 hosts.
• FTOS 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
FIB.
• FTOS IGMP snooping implementation is based on draft-ietf-magma-snoop-10.
• FTOS 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 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 STP.
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
.
Version 7.8.1.0 Introduced on C-Series and S-Series
Version 7.7.1.0 Introduced on E-Series
ip igmp
ssm-map
Use a statically configured list to translate (*,G) memberships to (S,G) memberships.