Ip Igmp Snooping Vlan Mrouter - Cisco Catalyst 2960 Command Reference Manual

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Catalyst 2960 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

Syntax Description

interface interface-id

learn {cgmp |

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

Usage Guidelines

VLAN IDs 1002 to 1005 are reserved for Token Ring and FDDI VLANs and cannot be used in IGMP

The CGMP learn method is useful for reducing control traffic.

The configuration is saved in NVRAM.

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:

Specify the multicast router learning method. The keywords have these

Modification

This command was introduced.

fastethernet interface number—a Fast Ethernet IEEE 802.3 interface.

gigabitethernet interface number—a Gigabit Ethernet IEEE 802.3z

port-channel interface number—a channel interface. The range is 0

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.

ip igmp snooping vlan mrouter

Catalyst 2960 Switch Command Reference