Cisco Catalyst 4500 Series Configuration Manual page 556

mvr (interface configuration)
Usage Guidelines Configure a port as a source if it is intended to both send and receive multicast data bound for the
configured multicast groups. Multicast data is received on all ports configured as source ports.
Receiver ports on a switch can be in different VLANs, but should not belong to the multicast VLAN.
A port that is not taking part in MVR should not be configured as an MVR receiver port or a source port.
When Immediate Leave is enabled, a receiver port leaves a multicast group more quickly. Without
Immediate Leave, when the switch receives an IGMP leave message from a group on a receiver port, it
sends out an IGMP MAC-based query on that port and waits for IGMP group membership reports. If no
reports are received in a configured time period, the receiver port is removed from multicast group
membership. With Immediate Leave, an IGMP MAC-based query is not sent from the receiver port on
which the IGMP leave was received. Once the leave message is received, the receiver port is removed
from multicast group membership, which expedites leave latency.
The Immediate Leave feature should be enabled only on receiver ports to which a single receiver device
is connected.
The mvr vlan group command statically configures ports to receive multicast traffic sent to the IP
multicast address. A port statically configured as a member of a group remains a member of the group
until statically removed. In compatible mode, this command applies only to receiver ports; in dynamic
mode, it can also apply to source ports. Receiver ports can also dynamically join multicast groups by
using IGMP join messages.
When operating in compatible mode, MVR does not support IGMP dynamic joins on MVR source ports.
Examples
The following example shows how to configure a port as an MVR receiver port:
Switch(config)# interface gigabitethernet1/0/1
Switch(config-if)# mvr type receiver
The following example shows how to configure a port as an MVR source port:
Switch(config)# interface gigabitethernet1/0/2
Switch(config-if)# mvr type source
The following example shows how to remove a port as an MVR port:
Switch(config)# interface gigabitethernet1/0/1
Switch(config-if))# no mvr
The following example shows how to display configured receiver ports and source ports.
Switch# show mvr interface
Port
----
Fa0/2
Fa0/4
Fa0/5
Fa0/5
Fa0/10
Fa0/11
Fa0/16
Fa0/18
Fa0/18
Fa0/21
Fa0/24
Gi0/1
Gi0/1
Gi0/2
Catalyst 4500 Series Switch Cisco IOS Command Reference—Release XE 3.9.xE and 15.2(5)Ex
2-516
Type Mode
---- ----
RECEIVER Trunk
RECEIVER Trunk
RECEIVER Trunk
RECEIVER Trunk
SOURCE Access
SOURCE Trunk
RECEIVER Trunk
RECEIVER Trunk
RECEIVER Trunk
SOURCE Access
RECEIVER Access
RECEIVER Trunk
RECEIVER Trunk
SOURCE Access
VLAN Status
---- -------
1 ACTIVE/UP DISABLED
1 ACTIVE/UP DISABLED
1 ACTIVE/UP DISABLED
2 ACTIVE/UP DISABLED
10 ACTIVE/UP DISABLED
10 ACTIVE/UP ENABLED
2 ACTIVE/UP DISABLED
1 ACTIVE/UP ENABLED
2 ACTIVE/UP ENABLED
10 ACTIVE/UP DISABLED
4 ACTIVE/DOWN DISABLED
1 ACTIVE/UP DISABLED
2 ACTIVE/UP DISABLED
10 ACTIVE/UP
Chapter 2
Immediate Leave
---------------
DISABLED