4
Command Line Interface
Command Usage
This command displays information for multicast routing. If no optional
parameters are selected, detailed information for each entry in the multicast
address table is displayed. If you select a multicast group and source pair,
detailed information is displayed only for the specified entry. If the summary
option is selected, an abbreviated list of information for each entry is displayed
on a single line.
Example
This example shows detailed multicast information for a specified group/source pair
Console#show ip mroute 224.0.255.3 192.111.46.8
IP Multicast Forwarding is enabled.
IP Multicast Routing Table
Flags:
P - Prune, F - Forwarding
(192.111.46.0, 255.255.255.0, 224.0.255.3)
Owner: DVMPR
Upstream Interface: vlan1
Upstream Router: 148.122.34.9
Downstream: vlan2(P), vlan3(F)
Console#
Field
Source and netmask
Group address
Owner
Upstream Interface
Upstream Router
Downstream interface
and flags
This example lists all entries in the multicast table in summary form:
Console#show ip mroute summary
IP Multicast Forwarding is enabled.
IP Multicast Routing Table (Summary)
Flags:
P - Prune UP
Group
--------------- --------------- --------------- ---------- ------- ------
224.1.1.1
224.2.2.2
Console#
4-300
Table 4-105 show ip mroute - display description
Description
Subnetwork containing the IP multicast source.
IP multicast group address for a requested service.
The associated multicast protocol (i.e., DVMRP or PIM-DM).
Interface leading to the upstream neighbor.
IP address of the multicast router immediately upstream for this group.
The interface(s) on which multicast subscribers have been recorded. The flags
associated with each interface indicate prune (P) if the downstream interface
has been recently terminated or forwarding (F) if the interface is still active.
Source
Source Mask
10.1.0.0
10.1.0.0
Interface
255.255.0.0
255.255.0.0
Owner
Flags
vlan1
DVMRP
vlan1
DVMRP
P
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