3Com 5500-EI PWR Reference Manual page 390

The multicast routing table is the basis of multicast data delivery. You can view the multicast routing
table entries to determine whether (S, G) entries have been created with correct outgoing and incoming
interfaces.
Related commands: reset multicast routing-table, display multicast forwarding-table.
Examples
# Display the multicast routing table information.
<Sysname> display multicast routing-table
Multicast Routing Table
Total 3 entries
(4.4.4.4, 224.2.149.17)
Uptime: 00:15:16, Timeout in 272 sec
Upstream interface: Vlan-interface1(4.4.4.6)
Downstream interface list:
Vlan-interface2(2.2.2.4), Protocol 0x1: IGMP
(4.4.4.4, 224.2.254.84)
Uptime: 00:15:16, Timeout in 272 sec
Upstream interface: Vlan-interface1(4.4.4.6)
Downstream interface list: NULL
(4.4.4.4, 239.255.2.2)
Uptime: 00:02:57, Timeout in 123 sec
Upstream interface: Vlan-interface1(4.4.4.6)
Downstream interface list: NULL
Matched 3 entries
The following table describes the fields in the displayed information.
Table 1-5 display multicast routing-table command output description
Multicast Routing Table
Total 3 entries
(4.4.4.4, 224.2.149.17)
Uptime: 00:15:16, Timeout in 272 sec
Upstream interface: Vlan-interface1(4.4.4.6)
Downstream interface list:
Vlan-interface2(2.2.2.4), Protocol 0x1: IGMP
Matched 3 entries
Field
Multicast routing table
There are three entries in all in the multicast
routing table.
An (S, G) entry
The entry has been there for 15 minutes and 16
seconds, and it will expire in 272 seconds.
Upstream interface: VLAN-interface 1 (The IP
address of the upstream interface is 4.4.4.6).
Downstream interface list:
Downstream interface: VLAN-interface 2. (The
IP address of the downstream interface is
2.2.2.4).
The downstream interface was added by the
IGMP protocol.
Three entries match the command.
1-7
Description