Displaying MVR Information

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: Configuring Multicast VLAN Registration