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Catalyst 6000 Family Software Configuration Guide—Releases 6.3 and 6.4
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Chapter 40 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
-------------------------------------------- ----------- ------------ ----------
1/1-2,3/1,6/1-9,6/15-48,7/1-24 Enabled Normal Disabled
6/10-14 Disabled Normal Disabled
Console> (enable)
Enabling GMRP Forward-All Option
When you enable the GMRP forward-all option on a port, a copy of all multicast traffic registered on the
switch is forwarded to that port. Enable the forward-all option on any port connected to a router that
needs to receive any multicasts (routers do not support GMRP and so cannot send GMRP join mesages).
The forward-all option can also be used to forward all registered multicast traffic to a port with a network
analyzer or probe attached.
To enable the GMRP forward-all option on a switch 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:
Task
Command
Step 1
Disable GMRP on individual switch ports.
set port gmrp disable
mod/port
Step 2
Verify the configuration.
show gmrp configuration
Task
Command
Enable the GMRP forward-all option on a switch
port.
set gmrp fwdall enable
mod/port
Task
Command
Disable the GMRP forward-all option on a port.
set gmrp fwdall disable
mod/port
