Cisco Catalyst 4500 Series Configuration Manual page 553

Chapter 2
Command History Release
Release IOS XE 3.9.1E The maximum number of supported MVR groups was increased from 500 to
Release IOS XE 3.5.0E
and IOS 15.2(1)E
Usage Guidelines
Use the mvr group command to statically set all the IP multicast addresses to participate in MVR. Any
multicast data sent to a configured multicast address is sent to all the source ports on the switch and to
all receiver ports that have registered to receive data on that IP multicast address.
The maximum number of supported MVR groups is 1500.
A hardware entry occurs when there is an IGMP join on a port or when you configure a port to join a
group with the mvr vlan group interface configuration command.
The mvr querytime command applies only to receiver ports.
When operating in compatible mode, MVR does not support IGMP dynamic joins on MVR source ports.
MVR can coexist with IGMP snooping on a switch.
MVR and multicast cannot co-exist on the same switch. If you try to enable MVR while multicast routing
or a multicast routing protocol are enabled, your operation is cancelled and you receive an error message.
If you enable multicast routing or a multicast routing protocol while MVR is enabled, MVR is disabled
and you receive a warning message.
Examples The following example shows how to enable MVR:
Switch(config)# mvr
The following example shows how to disable MVR:
Switch(config)# no mvr
Use the show mvr privileged EXEC command to display the current setting for maximum multicast
groups.
The following example shows how to configure 228.1.23.4 as an IP multicast address:
Switch(config)# mvr group 228.1.23.4
The following example shows how to configure ten contiguous IP multicast groups with multicast
addresses from 228.1.23.1 to 228.1.23.10:
Switch(config)# mvr group 228.1.23.1 10
The following example shows how to delete the previously configured ten IP multicast addresses:
Switch(config)# no mvr group 228.1.23.1 10
The following example shows how to delete all previously configured IP multicast addresses:
Switch(config)# no mvr group
Use the show mvr members privileged EXEC command to display the configured IP multicast group
addresses.
The following example shows how to set the maximum query response time as 1 second (10 tenths):
Switch(config)# mvr querytime 10
Modification
1500
This command was introduced on the Catalyst 4500 series switch.
Catalyst 4500 Series Switch Cisco IOS Command Reference—Release XE 3.9.xE and 15.2(5)Ex
mvr (global configuration)
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