Gvrp; Protocols And Standards; Gvrp Configuration Task List; Configuring Gvrp Functions - HP 3100 Series Configuration Manual

GVRP

GVRP overview
As a GARP application, GVRP uses the operating mechanism of GARP to maintain and propagate
dynamic VLAN registrations throughout a switched LAN.
In a switched LAN, each GVRP-enabled switch sends and receives VLAN declarations and
withdrawals from other GVRP-enabled switches, and dynamically updates its local database,
including active VLAN members and through which port each VLAN member can be reached. This
makes sure that all GVRP-enabled switches in a LAN maintain the same VLAN information.
The VLAN information propagated by GVRP includes not only manually configured static VLAN
information but also dynamic VLAN information from other switches.
GVRP registration modes
GVRP is available on trunk ports. It provides the following registration modes:
•
Normal mode—Performs dynamic VLAN registrations and deregistrations on the trunk port,
and sends declarations and withdrawals for dynamic and static VLANs. VLANs manually
configured are called static VLANs, and VLANs created by GVRP are called dynamic VLANs.
•
Fixed mode—Disables the trunk port to register or withdraw dynamic VLAN information, but
allows the port to send declarations for static VLANs. A trunk port in this mode carries only static
VLANs, even if it has been assigned to all VLANs.
•
Forbidden mode—Disables the trunk port to register or withdraw dynamic VLAN information,
and allows the port to send declarations only for VLAN 1. A trunk port in this mode carries only
VLAN 1 even if it has been assigned to any other VLANs.

Protocols and standards

IEEE 802.1Q, Virtual Bridged Local Area Networks

GVRP configuration task list

When you configure GVRP, follow these guidelines:
•
GVRP configuration made in Ethernet interface view or Layer 2 aggregate interface view takes
effect on the current interface only; GVRP configuration made in port group view takes effect on
all the member ports in the group.
•
GVRP configuration made on a member port in an aggregation group takes effect only after the
port is removed from the aggregation group.
Complete these tasks to configure GVRP:
Task

Configuring GVRP functions

Configuring the GARP timers
Configuring GVRP functions
Before enabling GVRP on a port, you must enable GVRP globally. In addition, you can configure
GVRP only on trunk ports, and you must assign the involved trunk ports to all dynamic VLANs.
Remarks
Required
Optional
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