Administrator Guide

Internet Group Management Protocol
(IGMP)
The IGMP commands are supported by the Dell Networking operating software on the Dell Networking OS.
This chapter contains the following sections:
● IGMP Commands
● IGMP Snooping Commands
Topics:
• IGMP Commands
• IGMP Snooping Commands
IGMP Commands
Dell Networking OS supports IGMPv1/v2/v3 and is compliant with RFC-3376.
Important Points to Remember
● Dell Networking OS supports protocol-independent multicast-sparse (PIM-SM) and protocol-independent source-specific
multicast (PIM-SSM) include and exclude modes.
● IGMPv2 is the default version of IGMP on interfaces. You can configure IGMPv3 on interfaces. It is backward compatible
with IGMPv2.
● The Z9000 supports up to 95 interfaces.
● There is no hard limit on the maximum number of groups supported.
● IGMPv3 router interoperability with IGMPv2 and IGMPv1 routers on the same subnet is not supported.
● An administrative command (ip igmp version) is added to manually set the IGMP version.
● All commands previously used for IGMPv2 are compatible with IGMPv3.
clear ip igmp groups
Clear entries from the group cache table.
Z9000
Syntax
clear ip igmp groups [group-address | interface]
Parameters
group-address (OPTIONAL) Enter the IP multicast group address in dotted decimal format.
interface
interface
Enter the following keywords and slot/port or number information:
● For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet then the slot/port information.
● For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the
slot/port information.
● For a port channel interface, enter the keywords port-channel then a
number.
● For a VLAN interface, enter the keyword vlan then a number from 1 to 4094.
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474 Internet Group Management Protocol (IGMP)