on the VLAN, the port is removed immediately; otherwise, an IGMP query is sent to the group to determine
whether other hosts are present on the port.
MVR Interoperation with Other Features
MVR and IGMP Snooping
Although MVR operates on the underlying mechanism of IGMP snooping, the two features operate
independently of each other. One feature can be enabled or disabled without affecting the operation of the
other feature. If IGMP snooping is disabled globally or on a VLAN, and if MVR is enabled on the VLAN,
IGMP snooping is internally enabled on the VLAN. Joins received for MVR groups on non-MVR receiver
ports, or joins received for non-MVR groups on MVR receiver ports, are processed by IGMP snooping.
MVR and vPC
•
As with IGMP snooping, IGMP control messages received by virtual port channel (vPC) peer switches
are exchanged between the peers, allowing synchronization of MVR group information.
•
MVR configuration must be consistent between the peers.
•
The
no ip igmp snooping mrouter vpc-peer-link
command applies to MVR. With this command,
multicast traffic is not sent over to a peer link for the source VLAN and receiver VLAN unless there is
an orphan port in the VLAN.
•
The
show mvr member
command shows the multicast group on the vPC peer switch. However, the
vPC peer switch does not show the multicast groups if it does not receive the IGMP membership report
of the groups.
Licensing Requirements for MVR
The following table shows the licensing requirements for this feature:
License Requirement
Product
This feature does not require a license. Any feature not included in a license
package is bundled with the Cisco NX-OS system images and is provided at no
extra charge to you. For a complete explanation of the Cisco NX-OS licensing
scheme, see the
Cisco NX-OS Licensing Guide
.
Cisco NX-OS
Guidelines and Limitations for MVR
When configuring MVR, follow these guidelines:
•
MVR is supported only on Layer 2 Ethernet ports, such as individual ports, port channels, and virtual
Ethernet (vEth) ports.
•
MVR receiver ports can only be access ports; they cannot be trunk ports. MVR source ports can be either
access or trunk ports.
Cisco Nexus 6000 Series NX-OS Layer 2 Switching Configuration Guide, Release 7.x
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Configuring MVR
MVR Interoperation with Other Features
