Monitoring 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.

Action

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

host1#show ip mroute statistics 
IP 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
(10.0.1.9, 225.1.1.1) uptime 0 00:00:23
  Admission bandwidth: 2000000 bps
  QoS bandwidth: 2000000 bps
  RPF route: 10.0.0.0/8, incoming interface ATM2/1.200
             neighbor 21.1.1.1, owner Netmgmt
  Incoming interface list:
      ATM2/1.200 (21.2.2.2/8), Accept/Pim (RPF IIF)
  Outgoing interface list:
      ATM2/1.300 (31.2.2.2/8), Blocked (port-adm-limit)/Pim, 0 00:00:23/never
  Statistics:
      Received   : 23 pkts, 1472 bytes
      Forwarded  : 0 pkts, 0 bytes
      Rcvd on OIF: 0 pkts
Counts: 1 (S, G) entries
        0 (*, G) entries

Meaning

Table 10 lists the show ip mroute statistics command output fields.

Table 10: show ip mroute statistics Output Fields

Field Name

Field Description

(S,G)

IP 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

IP address and subnetwork mask of the RPF route

Incoming interface

Type and specifier of the incoming interface for the RPF route

neighbor address

IP 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 such as RIP or OSPF

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

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-adm-limit)
  • Protocol running on the interface: PIM, DVMRP, or IGMP
  • Amount of time that the interface has been active in this multicast forwarding entry, in days hours:minutes:seconds format
  • Length of time that the interface can remain active in this multicast forwarding entry, in days hours:minutes:seconds format or never

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 output 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.

Counts

Numbers of types of (S,G) mappings:

  • (S,G)—Number of (S,G) entries
  • (*,G)—Number of (*,G) entries

Related Documentation