Reference Guide

gvrp enable
Example of Configuring GVRP
FTOS(conf)#protocol gvrp
FTOS(config-gvrp)#no disable
FTOS(config-gvrp)#show config
!
protocol gvrp
no disable
FTOS(config-gvrp)#
To inspect the global configuration, use the show gvrp brief command.
Enabling GVRP on a Layer 2 Interface
To enable GVRP on a Layer 2 interface, use the following command.
• Enable GVRP on a Layer 2 interface.
INTERFACE mode
gvrp enable
Example of Enabling GVRP on an Interface
FTOS(conf-if-gi-1/21)#switchport
FTOS(conf-if-gi-1/21)#gvrp enable
FTOS(conf-if-gi-1/21)#no shutdown
FTOS(conf-if-gi-1/21)#show config
!
interface GigabitEthernet 1/21
no ip address
switchport
gvrp enable
no shutdown
To inspect the interface configuration, use the show config command from INTERFACE mode or use the show
gvrp interface
command in EXEC or EXEC Privilege mode.
Configure GVRP Registration
Configure GVRP registration.
There are two GVRP registration modes:
• Fixed Registration Mode — figuring a port in fixed registration mode allows for manual creation and registration
of VLANs, prevents VLAN deregistration, and registers all VLANs known on other ports on the port. For example,
if an interface is statically configured via the CLI to belong to a VLAN, it should not be unconfigured when it
receives a Leave PDU. Therefore, the registration mode on that interface is FIXED.
• Forbidden Mode — Disables the port to dynamically register VLANs and to propagate VLAN information except
information about VLAN 1. A port with forbidden registration type thus allows only VLAN 1 to pass through even
though the PDU carries information for more VLANs. Therefore, if you do not want the interface to advertise or
learn about particular VLANS, set the interface to the registration mode of FORBIDDEN.
Based on the configuration in the following example, the interface 1/21 is not removed from VLAN 34 or VLAN 35 despite
receiving a GVRP Leave message. Additionally, the interface is not dynamically added to VLAN 45 or VLAN 46, even if a
GVRP Join message is received.
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