Technical Documentation

Configuring GVRP (J-Web Procedure)

As a network expands and the number of clients and VLANs increases, VLAN administration becomes complex, and the task of efficiently configuring VLANs on multiple EX Series switches becomes increasingly difficult. To automate VLAN administration, you can enable GARP VLAN Registration Protocol (GVRP) on the network.

GVRP learns VLANs on a particular 802.1Q trunk port and adds the corresponding trunk interface to the VLAN if the advertised VLAN is preconfigured or already exists on the switch. For example, a VLAN named “sales” is advertised to trunk interface 1 on the GVRP-enabled switch. The switch adds trunk interface 1 to the sales VLAN if the sales VLAN already exists on the switch.

As individual interfaces become active and send requests to join a VLAN, the VLAN configuration is updated and propagated among the switches. Limiting the VLAN configuration to active participants reduces the network overhead. GVRP also provides the benefit of pruning VLANs to limit the scope of broadcast, unknown unicast, and multicast (BUM) traffic to interested network devices only.

To configure GVRP using the J-Web interface:

  1. Select Configure > Switching > GVRP. Interfaces on which GVRP has been enabled are listed.

    Note: After you make changes to the configuration in this page, you must commit the changes for them to take effect. To commit all changes to the active configuration, select Commit Options > Commit. See Using the Commit Options to Commit Configuration Changes for details about all commit options.

  2. To enable GVRP on an interface, click Add. Click the arrow key to move the interface from the Interface Out of GVRP list to the Interface under GVRP list, and click OK.
  3. To modify GVRP timers, click Global Settings. For modifying GVRP Timer settings for the interface, enter information as described in Table 1.
  4. Click OK to apply changes to the configuration or click Cancel to cancel without saving changes.

To disable an interface, select the interface and click Disable Port.

Table 1: GVRP Timer Settings



Your Action

Join Timer

Specifies the maximum number of milliseconds the interface waits before sending VLAN advertisements.

Type a number.

Leave Timer

Specifies the number of milliseconds an interface waits after receiving a leave message before the interface leaves the VLAN specified in the message.

Type a number.

Leave All Timer

Specifies the interval in milliseconds at which Leave All messages are sent on interfaces. Leave All messages help to maintain current GVRP VLAN membership information in the network.

Type a number.

Disable GVRP

Disables GVRP on all interfaces.

To disable GVRP, select the check box.

To enable GVRP, clear the check box.

Published: 2010-05-03