# Monitoring IPv6 Multicast Statistics

#### Purpose

Display statistics for packets received through multicast routes that the router has added to the multicast routing table and established on the appropriate line modules.

- You can specify a multicast group address or both a multicast group address and a multicast source address to display information about a particular multicast forwarding entry.
- You can use the active option to display information for the active multicast routes.
- You can specify the bandwidth threshold along with the active option to display information for the active multicast routes with admission bandwidth greater than the specified bandwidth threshold. The default bandwidth threshold is 4000 bps.

#### Action

To display the statistics of the multicast routes added to the multicast routing table:

    host#show ipv6 mroute statistics
    IPv6 Multicast Routing Table

    (S, G) uptime d h:m:s[, expires d h:m:s]
      [Admission bandwidth: bps]
      [QoS bandwidth: bps]
      RPF route: addr/mask, incoming interface
                 neighbor address, owner route-owner
      Incoming interface list:
          Interface (addr/mask), State/Owner [(RPF IIF)]
      Outgoing interface list:
          Interface (addr/mask), State/Owner, Uptime/Expires

    (10:0:0:1:1::, ff0e::1) uptime 0 01:05:23
      Admission bandwidth:
      RPF route: 10:0:0:1::/64, incoming interface ATM2/3.1001
                 neighbor 10:0:0:1::1, owner Local
      Incoming interface list:
          ATM2/3.1001 (10:0:0:1::1/64), Accept/Pim (RPF IIF)
      Outgoing interface list:
          ATM2/0.200 (21:2:2:21::2:1/60), Forward/Pim, 0 01:05:23/never
      Statistics:
          Received   : 346 pkts, 22144 bytes
          Forwarded  : 346 pkts, 22144 bytes
          Rcvd on OIF: 0 pkts

    (10:0:0:1:2::, ff0e::1) uptime 0 01:05:23
      RPF route: 10:0:0:1::/64, incoming interface ATM2/3.1001
                 neighbor 10:0:0:1::1, owner Local
      Incoming interface list:
          ATM2/3.1001 (10:0:0:1::1/64), Accept/Pim (RPF IIF)
      Outgoing interface list:
          ATM2/0.200 (21:2:2:21::2:1/60), Forward/Pim, 0 01:05:26/never
      Statistics:
          Received   : 346 pkts, 22144 bytes
          Forwarded  : 346 pkts, 22144 bytes
          Rcvd on OIF: 0 pkts

#### Meaning

Table 20 lists the show ipv6 mroute statistics command output fields.

Table 20: show ipv6 mroute statistics Output Fields

Field Name | Field Description
--- | ---
(S,G) | IPv6 addresses of the multicast source and the multicast group
Uptime | Length of time that the (S,G) pair has been active, in days hours:minutes:seconds format
Expires | Length of time for which the (S,G) pair will be active, in days hours:minutes:seconds format
Admission bandwidth | Admission bandwidth (in bps)
QoS bandwidth | QoS bandwidth (in bps)
RPF Route | IPv6 address and prefix of the RPF route
Incoming interface | Type and specifier of the incoming interface for the RPF route
neighbor address | IPv6 address of the neighbor
owner | Owner of the route: Local—route belonging to the local interface Static—Static route Other protocols—Route established by a protocol
Incoming interface list | List of incoming interfaces on the router. Details include: Type of interface and its specifier Action that the interface takes with packets: accept or discard Multicast protocol that owns the interface Time that the interface has been active in this multicast forwarding entry, in days hours:minutes:seconds format Time that the interface will cease to be active in this multicast forwarding entry, in days hours:minutes:seconds format
Outgoing interface list | List of outgoing interfaces on the router. Details include: Type of interface and its specifier Action that the interface takes with packets: Forward or Blocked (intf-adm-limit, join-intf-adm-limit, port-adm-limit, port-limit, port-priority-limit) Protocol running on the interface: PIM or MLD Time that the interface has been active in this multicast forwarding entry, in days hours:minutes:seconds format Time that the interface will cease to be active in this multicast forwarding entry, in days hours:minutes:seconds format
Statistics | Received—Number of packets and bytes that the virtual router received for this multicast route Forwarded—Number of packets and statistics that the virtual router has forwarded for this multicast route Rcvd on OIF—Number of packets and statistics that the virtual router has received on the OIF for this multicast route Note: The display shows statistics after the virtual router has added the multicast route to the multicast routing table and established the route on the appropriate line module. Statistics for interactions before the route is established on the line module are not displayed.

#### Related Documentation

- Defining IPv6 Static Routes for Reverse-Path Forwarding
- Example: Configuring an IPv6 Multicast Bandwidth Map
- Activating IPv6 Multicast QoS Adjustment Functions
- Blocking IPv6 Mroutes
- Enabling Interface-Level Admission Bandwidth Limitation for IPv6
- Creating IPv6 Mroute Port Limits
- Enabling Port-Level Admission Bandwidth Limitation for IPv6
- show ipv6 mroute