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.

You can specify a multicast group IP address or both a multicast group IP address and a multicast source IP 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 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

Monitoring Multicast Statistics

Purpose

Action

Meaning

Related Documentation