Reference Guide

Internet Group Management Protocol (IGMP) | 555
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 Force10 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.