show ip mroute

This command displays a summary or all the details of the multicast table.

Note:

This command replaces the show ip mcast mroute command.

Format	`show ip mroute {detail \| summary \| group group-address \| source source-address}`
Mode	Privileged EXEC User EXEC

If you use the detail, group, or source parameters in PIM Sparse mode, the command displays the following fields:

Parameter	Description
Flags	F: Register flag. Indicates that the source connected router is sending registers to RP. This flag can be seen only on Designated Router connected to source. T: SPT-bit set. Indicates that packets have been received on the shortest path source tree. R: RP-bit set. Indicates that the (S, G) entry is pointing toward the RP. This flag typically indicates a prune state along the shared tree for a particular source.
Outgoing interface flags	C: Connected. A member of the multicast group is directly connected to the interface. J: Received PIM (*,G) Join on this interface.
Timers:Uptime/Expires	Uptime: Indicates per interface how long (in hours, minutes, and seconds) the entry has been in the IP multicast routing table. Expires: Indicates per interface how long (in seconds) until the entry will be removed from the IP multicast routing table
Counters	Joins: Indicates the number of (,G) or (S,G) joins received for the given entry. Prunes: Indicates the number of (,G) or (S,G) prunes received for the given entry. Registers: Indicates the number of register messages received for the given (S,G) entry. Register Stops: Indicates the number of register stop messages received for the given (S,G) entry.
RPF Address	IP address of the upstream router to the source.
Outgoing interface list	List of outgoing Interfaces.
Protocol	The current operating multicast routing protocol.
RP	Address of the RP router.
Incoming interface	Expected interface for a multicast packet from the source. If the packet is not received on this interface, it is discarded.

If you use the detail parameter in any mode other than PIM sparse mode, the command displays the following fields:

Term	Definition
Source IP Addr	The IP address of the multicast data source.
Group IP Addr	The IP address of the destination of the multicast packet.
Expiry Time	The time of expiry of this entry in seconds.
Up Time	The time elapsed since the entry was created in seconds.
RPF Neighbor	The IP address of the RPF neighbor.
Flags	The flags associated with this entry.

If you use the summary parameter in PIM Sparse mode, the command displays the following fields:

Parameter	Description
Source IP	Source address of the multicast route entry.
Group IP	Group address of the multicast route entry.
Protocol	The current operating multicast routing protocol.
Incoming Interface	Expected interface for a multicast packet from the source. If the packet is not received on this interface, it is discarded.
Outgoing Interface List	List of outgoing Interfaces.

If you use the summary parameter, the command displays the following fields:

Term	Definition
Source IP Addr	The IP address of the multicast data source.
Group IP Addr	The IP address of the destination of the multicast packet.
Protocol	The multicast routing protocol by which the entry was created.
Incoming Interface	The interface on which the packet for the source/group arrives.
Outgoing Interface List	The list of outgoing interfaces on which the packet is forwarded.

Example: This example shows the output for the summary parameter in PIM Sparse mode.

(Routing) #show ip mroute summary

                 Multicast route table summary
                                           Incoming  Outgoing
Source IP       Group IP        Protocol   Interface Interface List
--------------- --------------- ---------- --------- ---------------
192.168.10.1    225.1.1.1       PIMSM      Vl10      Vl20, Vl30

Example: This example shows the output for the detail parameter in PIM Sparse mode.

IP Multicast Routing Table
Flags: C - Connected, J - Received Pim (*,G) Join,
R - RP-bit set, F - Register flag, T - SPT-bit set
Timers: Uptime/Expires    Protocol: PIMSM

( *,225.6.6.6)
00:00:41/000   RP: 1.1.1.1
Joins/Prunes: 0/0
Incoming interface:            RPF nbr: 0.0.0.0
Outgoing interface list:
4/1        00:00:41/218   Joins:           0    Flags: C

( *,225.7.7.7)
00:00:36/000   RP: 1.1.1.1
Joins/Prunes: 0/0
Incoming interface:            RPF nbr: 0.0.0.0
Outgoing interface list:
4/1        00:00:36/224   Joins:           0    Flags: C

(3.3.3.11,225.6.6.6)
00:00:51/158 Flags:   T
Joins/Prunes: 0/0 Reg/Reg-stop: 0/0
Incoming interface: 4/2        RPF nbr: 3.3.3.11
Outgoing interface list:
4/1        00:00:41/000   Joins:           0

(3.3.3.11,225.7.7.7)
00:17:42/201 Flags:   T
Joins/Prunes: 0/0 Reg/Reg-stop: 0/0
Incoming interface: 4/2        RPF nbr: 3.3.3.11
Outgoing interface list:
4/1        00:00:36/000   Joins:           0

Example: This example shows the output for the detail parameter in PIM Dense mode when a multicast routing protocol other than PIMSM is enabled.

(Routing) (Config)#show ip mroute detail

IP Multicast Routing Table
                                Expiry Time   Up Time
Source IP       Group IP        (hh:mm:ss)    (hh:mm:ss)    RPF Neighbor    Flags
--------------- --------------- ------------- ------------- --------------- -----
192.168.10.1    225.1.1.1       00:02:45      05:37:09      192.168.20.5    SPT

Example: This example shows IPv6 output for the detail parameter in PIM Sparse mode.

#show ipv6 mroute detail

IP Multicast Routing Table
Flags: C - Connected, J - Received Pim (*,G) Join,
R - RP-bit set, F - Register flag, T - SPT-bit set
Timers: Uptime/Expires    Protocol: PIMSM

( *,ff43::3)
00:00:41/000    RP: 2001::1
Joins/Prunes: 0/0
Incoming interface:            RPF nbr: ::
Outgoing interface list:
4/1        00:00:41/219   Joins:           0    Flags: C

( *,ff24::6)
00:00:22/000    RP: 2001::1
Joins/Prunes: 0/0
Incoming interface:            RPF nbr: ::
Outgoing interface list:
4/1        00:00:41/219   Joins:           0    Flags: C

(3001::10,ff43::3)
00:00:07/203    Flags: T
Joins/Prunes: 0/0 Reg/Reg-stop: 0/0
Incoming interface: 4/2        RPF nbr: 3001::10
Outgoing interface list:
4/1        00:00:07/000   Joins:           0

(4001::33,ff22::3)
00:00:55/108    Flags: T
Joins/Prunes: 0/0 Reg/Reg-stop: 0/0
Incoming interface: 4/1        RPF nbr: 3001::10
Outgoing interface list:
4/2        00:00:66/000   Joins:           0

(3001::10,ff43::3)
00:00:07/203    Flags: T
Joins/Prunes: 0/0 Reg/Reg-stop: 0/0
Incoming interface: 4/1        RPF nbr: 3001::10
Outgoing interface list:
4/2        00:00:77/000   Joins:           0

Example: This example shows output for the group parameter in PIM Sparse mode.

(U16)# show ip mroute group 229.10.0.1
IP Multicast Routing Table

Flags: C - Connected,J - Received PIM (*,G) Join,
       R - RP-bit set, F - Register flag, T - SPT-bit set
Timers: Uptime(HH:MM:SS)/Expiry(SSS)
Protocol: PIMSM

(*, 229.10.0.1), 00:04:35/179, RP: 192.0.2.20
Joins/Prunes: 20/1
Incoming interface: Null, RPF Address: 0.0.0.0
Outgoing interface list:
    VLAN 6    00:00:30/150  Joins:15  Flags: C
    VLAN 5    00:04:35/150  Joins:10  Flags: C
    VLAN 2    00:01:28/0    Joins:20  Flags: J

(192.0.2.20, 229.10.0.1), 00:04:35/177, Flags: T
Joins/Prunes:20/1 , Reg/Reg-Stop:100/0
Incoming interface: VLAN 2, RPF Address: 0.0.0.0
Outgoing interface list:
    VLAN 5    00:03:25/0    Joins:20
    VLAN 6    00:00:10/0    Joins:5

Example: The following example shows output for the source parameter in PIM Sparse mode.

(U16)# show ip mroute source 192.0.2.20
IP Multicast Routing Table

Flags: C - Connected,J - Received PIM (*,G) Join,
       R - RP-bit set, F - Register flag, T - SPT-bit set
Timers: Uptime(HH:MM:SS)/Expiry(SSS)
Protocol: PIMSM

(192.0.2.20, 229.10.0.1), 00:04:35/177, Flags: T
Joins/Prunes:20/1 , Reg/Reg-Stop:100/0
Incoming interface: VLAN 2, RPF Address: 0.0.0.0
Outgoing interface list:
    VLAN 5    00:03:25/0    Joins:20
    VLAN 6    00:00:10/0    Joins:5