Sending Gvrp Vlan Declarations From Blocking Ports; Setting The Garp Timers - Cisco WS-C4003 - Catalyst 4000 Chassis Switch Software Configuration Manual

Configuring GVRP
To configure GVRP forbidden registration on an 802.1Q trunk port, perform this task in privileged mode:
Task
Step 1
Configure forbidden registration on an 802.1Q
trunk port.
Step 2
Verify the configuration.
This example shows how to configure forbidden registration on an 802.1Q trunk port:
Console> (enable) set gvrp registration forbidden 1/1
Registrar Administrative Control set to forbidden on port 1/1.
Console> (enable)

Sending GVRP VLAN Declarations from Blocking Ports

To prevent undesirable Spanning Tree Protocol (STP) topology reconfiguration on a port connected to a
device that does not support per-VLAN STP, configure the GVRP active applicant state on the port. Ports
in the GVRP active applicant state send GVRP VLAN declarations when they are in the STP blocking
state, which prevents the STP bridge protocol data units (BPDUs) from being pruned from the other port.
Note Configuring fixed registration on the other device's port would also prevent undesirable STP topology
reconfiguration.
To configure an 802.1Q trunk port to send VLAN declarations when in the blocking state, perform this
task in privileged mode:
Task
Configure an 802.1Q trunk port to send VLAN
declarations when in the blocking state.
This example shows how to configure a group of 802.1Q trunk ports to send VLAN declarations when
in the blocking state:
Console> (enable) set gvrp applicant active 4/2-3,4/9-10,4/12-24
Applicant was set to active on port(s) 4/2-3,4/9-10,4/12-24.
Console> (enable)
Use the normal keyword to return to the default state (active mode disabled).

Setting the GARP Timers

Note The commands set gvrp timer and show gvrp timer are aliases for set garp timer and show garp timer.
The aliases may be used if desired.
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
13-6
Chapter 13
Command
set gvrp registration forbidden
mod_num/port_num
show gvrp configuration
Command
set gvrp applicant state {normal | active}
mod_num/port_num
Configuring GVRP
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