Specifications

Process Overview: Routing Protocol Configuration
Configuring DVMRP
13-80 Matrix E1 Series (1G58x-09 and 1H582-xx) Configuration Guide
13.1.3.4 show ip mroute
Use this command to display the multicast forwarding cache table. Since the DVMRP routing table
is not aware of group membership, the DVMRP process builds a forwarding cache table based on a
combination of information. This information includes items from the multicast routing table, such
at the source network/mask and upstream neighbors. Other items used to build the forwarding cache
table are source groups, received pruned neighbors and VLANs, upstream and downstream VLANs,
and other information, The forwarding cache table represents the local router’s understanding of the
shortest path source-based delivery tree for each (source, group) pair. Basically it is the source’s
RPM (Reverse-Path Multicast) for that group.
show ip mroute
Syntax Description
None.
Command Type
Router command.
Command Mode
Privileged EXEC: Matrix>Router#
Command Defaults
None.
Example
This example shows how to display the multicast forwarding cache table. In this case, it shows there
are two source multicast networks. The network at IP address 165.223.129.0 is in multicast group
224.2.164.189
. It recognizes an upstream neighbor at 134.141.20.1 via the VLAN 20 interface, and
two downstream VLANs. The other multicast network at IP address 134.141.30.0
is in multicast
group 238.27.2.2
. It recognizes the same upstream neighbor via the same interface, and four