Displaying MVR Information

You can use various show commands to view information about Multicast VLAN Registration (MVR) snooping. Using these commands is optional and they can be entered in any order.

Use the show ip multicast mvr mvlan group-map command to display group-to-MVLAN mapping details. 

device# show ip multicast mvr mvlan group-map

MVLAN      count/             Start Group        End Group
           Range               Address           Address
---------+------------+-------------------+------------------
10         1           225.0.0.1                  225.0.0.1
11         10          226.0.0.1                  226.0.0.10
11         range       228.0.0.1                  228.0.0.10
12         1           229.0.0.2                  229.0.0.2

Use the show ip multicast mvr mvlan mvlan-id group-map command to display information about mapping of a specific MVLAN to group. 

device# show ip multicast mvr mvlan 11 group-map

MVLAN      count/           Start Group           End Group
           Range             Address                Address
---------+------------+-------------------+------------------
11          10            226.0.0.1              226.0.0.10
11          range         228.0.0.1              228.0.0.10

Use the show ip multicast mvr mvlan group-map grp-addr command to display information about MVR based on the multicast group address assigned to the MVLAN. 

device# show ip multicast mvr mvlan group-map 226.0.0.1

MVLAN      count/           Start Group      End Group
           Range             Address         Address
---------+------------+-------------------+------------------
11         10            226.0.0.1           226.0.0.10

Use the show ip multicast vlan command to display MVR-related information in IGMP snooping configurations. 

device# show ip multicast vlan
Summary of all vlans. Please use "sh ip mu vlan <vlan-id>" for details
Version=2, Intervals: Query=11, Group Age=40, Max Resp=10, Other Qr=27,
Leave Wait=2, Robustness=2

Replication resource sharing: Enabled
Unregistered IPv4 Multicast Packets Flooding: Disabled
MVR: Enabled

VL1: dft V2, vlan cfg passive, mvr-s, 0 grp, 0 (SG) cache, no rtr port
VL10: dft V2, vlan cfg passive, mvr-r, 1 grp, 1 (*G) cache, (dy-1, st-0) rtr ports

When MVR is disabled, the show ip multicast vlan command displays the following output. 

device# show ip multicast vlan
Summary of all vlans. Please use "sh ip mu vlan <vlan-id>" for details
Version=2, Intervals: Query=125, Group Age=260, Max Resp=10, Other Qr=255,
                      Leave Wait=2, Robustness=2

Replication resource sharing: Enabled
Unregistered IPv4 Multicast Packets Flooding: Disabled
MVR: Disabled

Use the show ip multicast vlan command with a specific vlan-id to display MVR details for a specific VLAN. 

device# show ip multicast vlan 1
Version=2, Intervals: Query=11, Group Age=40, Max Resp=10, Other Qr=27,
Leave Wait=2, Robustness=2

VL1: dft V2, vlan cfg passive, mvr-s, 0 grp, 0 (SG) cache, no rtr port
My Query address: 1.0.0.24 (ve/loopback)
Edge ports: ALL
Non-Edge ports: NONE

e1/1/1 has 0 grp, non-QR (passive), mvr-s, default V2
e1/1/2 has 0 grp, non-QR (passive), mvr-s, default V2

Use the show ip mvr interface command to display MVR interface information.

device> show ip mvr interface
 
Flags    : MV-R - MVR Receiver, MV-S - MVR Source
 
---------+---------------+----+---+
Interface|Local          |Mode|St |
         |Address        |    |   |
---------+---------------+----+---+
      v1 *               MV-S Ena
      v2 *               MV-S Ena
     v10 *               MV-R Ena
     v11 *               MV-R Ena
Total Number of Interfaces : 4

Use the show ip mvr mcache command to display information about the MVR forwarding database.

device> show ip mvr mcache

IP Multicast MVR Mcache Table
Entry Flags    : MVR  - Multicast VLAN Registration Mode
                 LSRC - Local Source, LRCV - Local Receiver
                 HW - HW Forwarding Enabled, FAST - Resource Allocated, TAG - Need For Replication Entry
Interface Flags: MJ - Membership Join, MI - Membership Include, ME - Membership Exclude
                 MS - MVR Source Port
 
Total entries in mcache: 1
 
1     (53.0.0.10, 225.0.0.1) in v1 (tag e1/1/1), Uptime 14:08:27 (MVR) <-------- shows v1 is source vlan
      Source is MVR MVlan
      Flags (0x600400e1) MVR LRCV HW FAST TAG
      fast ports: ethe 1/1/1 eth 1/1/2 eth 1/1/3 eth 1/1/4
      AgeSltMsk: 1, IPMC:   293
      Forwarding_oif: 4
      L3 (HW) 2:
          e1/1/3(VL10), 14:08:27/0, Flags: MJ         <--- Member joined on receiver VLANS
          e1/1/4(VL11), 14:08:27/0, Flags: MJ
      L2 (HW) 2:
          e1/1/1,  14:08:27/0, Flags: MS              <------- Note: source vlan ports are added by default
          e1/1/2,  14:08:18/0, Flags: MS
      Src-Vlan:   1
Number of matching entries: 1

Enter the show ip mvr setting command to display MVR global settings. 

device> show ip mvr settings
 
Global MVR Mode Settings
  MVR: Global               : Yes              Mode                 : Transparent
  Mcache: Total In-Use      : 1                Curr Max limit(HW)   : 1024
  Mcache: Current Count     : 1                Inactivity interval  : 180
Parent topic: Multicast VLAN Registration