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Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide
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Release 8.1
78-15486-01
Chapter 15 Configuring Multicast Services
Configuring GMRP
This example shows how to disable GMRP on ports 6/10–14 and verify the configuration:
Console> (enable) set port gmrp disable 6/10-14
GMRP disabled on ports 6/10-14.
Console> (enable) show gmrp configuration
Global GMRP Configuration:
GMRP Feature is currently enabled on this switch.
GMRP Timers (milliseconds):
Join = 200
Leave = 600
LeaveAll = 10000
Port based GMRP Configuration:
Port GMRP Status Registration ForwardAll
-------------------------------------------- ----------- ------------ ----------
1/1-2,3/1,6/1-9,6/15-48
Enabled Normal Disabled
6/10-14 Disabled Normal Disabled
Console> (enable)
Enabling GMRP Forward-All Option
When you enable GMRP forward-all on a port, a copy of all multicast traffic that is registered on the
switch is forwarded to the port. We recommend enabling this option on any port that is connected to a
router. Forward-all can also forward all registered multicast traffic to a port with a network analyzer or
probe attached.
To forward a copy of all GMRP multicast packets that are registered on the switch to a port, perform this
task in privileged mode:
This example shows how to enable the GMRP forward-all option on port 1/1:
Console> (enable) set gmrp fwdall enable 1/1
GMRP Forward All groups option enabled on port 1/1.
Console> (enable)
Disabling GMRP Forward-All Option
To disable the GMRP forward-all option on a port, perform this task in privileged mode:
This example shows how to disable the GMRP forward-all option on port 1/1:
Console> (enable) set gmrp fwdall disable 1/1
GMRP Forward All groups option disabled on port 1/1.
Console> (enable)
Task
Command
Enable the GMRP forward-all option on a switch port. set gmrp fwdall enable mod_num/port_num
Task
Command
Disable the GMRP forward-all option on a port.
set gmrp fwdall disable mod_num/port_num
