Specifying Multicast Router Ports; Configuring Multicast Groups - Cisco WS-C2948G-GE-TX Configuration Manual

Configuring Multicast Router Ports and Group Entries

Specifying Multicast Router Ports

When you enable CGMP or GMRP, the switch automatically learns to which ports a multicast router is
connected. However, you can manually specify multicast router ports.
To specify multicast router ports manually, perform this task in privileged mode:
Task
Step 1 Manually specify a multicast router port.
Step 2
Verify the configuration.
This example shows how to specify a multicast router port manually and verify the configuration (the
asterisk [*] next to the multicast router on port 3/1 indicates that the entry was configured manually):
Console> (enable) set multicast router 3/1
Port 3/1 added to multicast router port list.
Console> (enable) show multicast router
CGMP enabled
IGMP disabled
Port
---------
2/1
2/2
3/1
Total Number of Entries = 4
'*' - Configured
Console> (enable)

Configuring Multicast Groups

To configure a multicast group manually, perform this task in privileged mode:
Task
Step 1 Add one or more multicast MAC addresses to the
CAM table.
Step 2 Verify the multicast group configuration.
This example shows how to configure multicast groups manually and verify the configuration (the
asterisks indicate that the entry was manually configured):
Console> (enable) set cam static 01-00-11-22-33-44 2/6-12
Static multicast entry added to CAM table.
Console> (enable) set cam static 01-11-22-33-44-55 2/6-12
Static multicast entry added to CAM table.
Console> (enable) set cam static 01-22-33-44-55-66 2/6-12
Static multicast entry added to CAM table.
Console> (enable) set cam static 01-33-44-55-66-77 2/6-12
Static multicast entry added to CAM table.
Console> (enable) show multicast group
CGMP enabled
IGMP disabled
Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide—Release 8.2GLX
15-16
Vlan
----------------
99
255
* 1
Chapter 15
Command
set multicast router mod_num/port_num
show multicast router [mod_num/port_num] [vlan_id]
Command
set cam {static | permanent} multicast_mac
mod_num/port_num [vlan]
show multicast group [mac_addr] [vlan_id]
Configuring Multicast Services
78-15908-01