Ip Igmp Snooping Vlan Mrouter - Cisco catalyst 3750 Command Reference Manual

Chapter 2 Catalyst 3750 Switch Cisco IOS Commands

ip igmp snooping vlan mrouter

Use the ip igmp snooping mrouter global configuration command to add a multicast router port or to
configure the multicast learning method. Use the no form of this command to return to the default
settings.
Syntax Description
vlan-id
interface interface-id
learn {cgmp |
pim-dvmrp}
Defaults By default, there are no multicast router ports.
The default learning method is pim-dvmrp—to snoop IGMP queries and PIM-DVMRP packets.
Command Modes Global configuration
Command History Release
12.1(11)AX
Usage Guidelines VLAN IDs 1002 to 1005 are reserved for Token Ring and FDDI VLANs and cannot be used in IGMP
snooping.
The CGMP learn method is useful for reducing control traffic.
The configuration is saved in NVRAM.
OL-8552-07
ip igmp snooping vlan vlan-id mrouter {interface interface-id | learn {cgmp | pim-dvmrp}}
no ip igmp snooping vlan vlan-id mrouter {interface interface-id | learn {cgmp | pim-dvmrp}}
Enable IGMP snooping, and add the port in the specified VLAN as the
multicast router port. The range is 1 to 1001 and 1006 to 4094.
Specify the next-hop interface to the multicast router. The keywords have
these meanings:
fastethernet interface number—a Fast Ethernet IEEE 802.3 interface.
•
gigabitethernet interface number—a Gigabit Ethernet IEEE 802.3z
•
interface.
port-channel interface number—a channel interface. The range is 0
•
to 48.
Specify the multicast router learning method. The keywords have these
meanings:
cgmp—Set the switch to learn multicast router ports by snooping on
•
Cisco Group Management Protocol (CGMP) packets.
pim-dvmrp—Set the switch to learn multicast router ports by snooping
•
on IGMP queries and Protocol-Independent Multicast-Distance Vector
Multicast Routing Protocol (PIM-DVMRP) packets.
Modification
This command was introduced.
ip igmp snooping vlan mrouter
Catalyst 3750 Switch Command Reference
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