show ip pim mroute

Displays PIM multicast route information from the route table.

Syntax

show ip pim mroute group {A.B.C.D}
show ip pim mroute source {A.B.C.D}
show ip pim mroute terse
show ip pim mroute terse [group {A.B.C.D}] [source {A.B.C.D}]
show ip pim mroute terse group {A.B.C.D}
show ip pim mroute terse source {A.B.C.D}

Command Parameters

group {A.B.C.D}: Specifies the multicast group address.
source {A.B.C.D}: Specifies the source IP address.
terse: Excludes the VLAN timers from the command output.

Default

None

Command Mode

User EXEC

Usage Guidelines

In a PIM-SM or PIM-SSM Layer 3 MLT/SMLT multicast environment, when an SMLT link down or SMLT link up event occurs, or when an individual port in an (S)MLT goes down or comes back up, traffic can be re-hashed (switched over) either to another port in the (S)MLT or to any of the IST's MLT ports. This is valid, as the nature of the (S)MLT environment is that traffic can ingress on any one of these ports and be successfully forwarded to receivers. However, the Incoming Port record might not accurately reflect which port the data is arriving on at a given time. This issue does not cause traffic loss. Check traffic statistics on the ports of the (S)MLT/ IST to determine the ingress port.

Command Output

The show ip pim mroute command displays the following information:


Output field	Description
Src	Displays the IP address of the source that sends the multicast stream. A nonzero value indicates that a source sends multicast traffic. 0.0.0.0 indicates that this entry is created in response to a receiver that wants to receive this traffic.
Grp	Displays the IP multicast group address.
RP	Displays the IP address of the RP router.
Upstream	Displays the IP address of the next hop that a multicast packet takes when received on the correct port as listed on the incoming interface.
Flags	Displays the flags configured based on the condition of the receivers, the RP, and the senders. Use the legend at the bottom of the output to explain the flag values.
Incoming Port	Lists the port through which a multicast packet can ingress. If the port is a member of a Multi-Link Trunk (MLT), the packets can ingress on any port of the MLT.
Outgoing Ports	Lists all ports through which traffic that enters on incoming ports exit.
Joined Ports	Lists all ports that received PIM join messages.
Pruned Ports	List all ports that received PIM prune messages.
Leaf Ports	Lists multicast receivers that directly connect to the router.
Asserted Ports	Lists all ports that received assert messages. The router uses assert messages to help determine the best path to the source.
Prune Pending Ports	Lists all ports currently in the prune-pending state.
Assert Winner Ifs	Lists interfaces elected the assert winner. The winner continues to forward multicast traffic to the LAN.
Assert Loser Ifs	Lists interfaces not elected as the assert winner. The loser interface is pruned.
Timers	Displays the up time and expiration time for the entry in the routing table.
AssertVifTimer	Displays the time after which the assert winner state refreshes.

Example

The following example displays information from the route table.

Switch:1>show ip pim mroute
================================================================================
                               Pim Multicast Route - GlobalRouter
================================================================================
 Src: 10.1.1.3      Grp: 232.2.1.1    RP: 0.0.0.0     Upstream: 70.70.70.4
 Flags: SPT CACHE SG
 Incoming  Port: Vlan70-MLT-4(1/24),
 Outgoing  Ports: Vlan2-1/8,1/40,
 Joined    Ports: Vlan2-1/8,
 Pruned    Ports:
 Leaf      Ports: Vlan2-1/40,
 Asserted  Ports:
 Prune Pending Ports:
 Assert Winner Ifs:
 Assert Loser Ifs:
 TIMERS:
 Entry   JP   RS  Assert
 207     9    0       0
 VLAN-Id:     2     3     4    70
 Join-P:   191     0     0     0
 Assert:     0     0     0     0
 --------------------------------------------------------------------------------
 Src: 10.1.1.4      Grp: 232.2.1.1    RP: 0.0.0.0     Upstream: 70.70.70.4
 Flags:
 SPT CACHE SG
 Incoming  Port: Vlan70-MLT-4(1/24),
 Outgoing Ports: Vlan2-1/8,1/40,
 Joined   Ports: Vlan2-1/8,
 Pruned   Ports:
 Leaf     Ports: Vlan2-1/40,
 Asserted Ports:
 Prune Pending Ports:
 Assert Winner Ifs:
 Assert Loser Ifs:
 TIMERS:
 Entry   JP   RS  Assert
 230     19    0       0
 VLAN-Id:     2     3     4    70
 Join-P:   203     0     0     0
 Assert:     0     0     0     0
 --------------------------------------------------------------------------------
 Total Num of Entries Displayed 2/2