Configuring Gvrp; Changing The Gvrp Base Vlan Id - HP ProCurve 9304M Installation And Configuration Manual

• All VLAN ports added by GVRP are tagged.
• GVRP is supported only for tagged ports or for untagged ports that are members of the default VLAN. GVRP
is not supported for ports that are untagged and are members of a VLAN other than the default VLAN.
• To configure GVRP on a trunk group, enable the protocol on the primary port in the trunk group. The GVRP
configuration of the primary port is automatically applied to the other ports in the trunk group.
• You can use GVRP on a device even if the device has statically configured VLANs. GVRP does not remove
any ports from the statically configured VLANs, although GVRP can add ports to the VLANS. GVRP
advertises the statically configured VLANs. Ports added by GVRP do not appear in the running-config and
will not appear in the startup-config file when save the configuration. You can manually add a port to make
the port a permanent member of the VLAN. After you manually add the port, the port will appear in the
running-config and be saved to the startup-config file when you save the configuration.
• VLANs created by GVRP do not support virtual routing interfaces or protocol-based VLANs. virtual routing
interfaces and protocol-based VLANs are still supported on statically configured VLANs even if GVRP adds
ports to those VLANs.
• You cannot manually configure any parameters on a VLAN that is created by GVRP. For example, you
cannot change STP parameters for the VLAN.
• The GVRP timers (Join, Leave, and Leaveall) must be set to the same values on all the devices that are
exchanging information using GVRP.
• If the network has a large number of VLANs, the GVRP traffic can use a lot of CPU resources. If you notice
high CPU utilization after enabling GVRP, set the GVRP timers to longer values. In particular, set the
Leaveall timer to a longer value. See "Changing the GVRP Timers" on page 12-7.
• The feature is supported only on Ethernet ports.
NOTE: If you plan to change the GVRP base VLAN ID (4093) or the maximum configurable value for the
Leaveall timer (300000 ms by default), you must do so before you enable GVRP.

Configuring GVRP

To configure a device for GVRP, globally enable support for the feature, then enable the feature on specific ports.
Optionally, you can disable VLAN learning or advertising on specific interfaces.
You also can change the protocol timers and change the GVRP base VLAN ID.

Changing the GVRP Base VLAN ID

By default, GVRP uses VLAN 4093 as a base VLAN for the protocol. All ports that are enabled for GVRP become
tagged members of this VLAN. If you need to use VLAN ID 4093 for a statically configured VLAN, you can change
the GVRP base VLAN ID.
NOTE: If you want to change the GVRP base VLAN ID, you must do so before enabling GVRP.
To change the GVRP base VLAN ID, enter a command such as the following at the global CONFIG level of the
CLI:
HP9300(config)# gvrp-base-vlan-id 1001
This command changes the GVRP VLAN ID from 4093 to 1001.
Syntax: [no] gvrp-base-vlan-id <vlan-id>
The <vlan-id> parameter specifies the new VLAN ID. You can specify a VLAN ID from 2 – 4092 or 4095.
Configuring GARP VLAN Registration Protocol (GVRP)
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