Dell Force10 Z9000 - 21 Internet Group Management Protocol (IGMP); IGMP Commands; Clear Ip Igmp Groups

21
Internet Group Management Protocol (IGMP)
The IGMP commands are supported by the Dell Force10 operating software (FTOS) on the E-Series, C-Series, S-Series,
Z-Series, and S4810 platforms.
This chapter contains the following sections:
• IGMP Commands
• IGMP Snooping Commands
IGMP Commands
FTOS supports IGMPv1/v2/v3 and is compliant with RFC-3376.
Important Points to Remember
• FTOS 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 maximum number of interfaces supported is 512 on the E-Series. On the C-Series and S-Series, the
maximum number of interfaces supported 31. 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.
C-Series, E-Series, S-Series, Z-Series, S4810
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:
667