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    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 1 lists the show ipv6 mroute statistics command output fields.

    Table 1: 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.

    Published: 2014-08-20