112 CHAPTER 11: GVRP CONFIGURATION
GVRP GVRP enables a device to propagate local VLAN registration information to other
participant devices and dynamically update the VLAN registration information
from other devices to its local database about active VLAN members and through
which port they can be reached. It thus ensures that all GVRP participants on a
bridged LAN maintain the same VLAN registration information. The VLAN
registration information propagated by GVRP includes both manually configured
local static entries and dynamic entries from other devices.
GVRP provides the following three registration types on a port:
■ Normal -- Enables the port to dynamically register and deregister VLANs, and to
propagate both dynamic and static VLAN information.
■ Fixed -- Disables the port to dynamically register and deregister VLANs or
propagate information about dynamic VLANs, but allows the port to propagate
information about static VLANs. A trunk port with fixed registration type thus
allows only manually configured VLANs to pass through even though it is
configured to carry all VLANs.
■ Forbidden -- Disables the port to dynamically register and deregister VLANs,
and to propagate VLAN information except information about VLAN 1. A trunk
port with forbidden registration type thus allows only VLAN 1 to pass through
even though it is configured to carry all VLANs.
Protocols and Standards GVRP is described in IEEE 802.1Q.
GVRP Configuration
Task List
n
GVRP can only be configured on Trunk ports.
Complete the following tasks to configure GVRP:
Configuring GVRP
Enabling GVRP Follow these steps to enable GVRP on a trunk port:
Attribute Value Attribute value VLAN ID for GVRP
If the Attribute Event is LeaveAll,
Attribute Value is omitted.
End Mark Indicates the end of a GARP PDU 0x00
Table 25 Description on the GARP message fields
Field Description Value
Task Remarks
“Enabling GVRP” on page 112 Required
“Configuring GARP Timers” on page 113 Optional
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