KB.15.15

Example 53 Using the show vlans command

In the following illustration, switch B has one static VLAN (the default VLAN), with GVRP enabled

and port 1 configured to Learn for Unknown VLANs. Switch A has GVRP enabled and has three

static VLANs: the default VLAN, VLAN-222, and VLAN-333. In this scenario, switch B will

dynamically join VLAN-222 and VLAN-333:

The show vlans command lists the dynamic (and static) VLANs in switch B after it has learned

and joined VLAN-222 and VLAN-333.

Switch-B> show vlans

Status and Counters - VLAN Information

VLAN support : Yes

Maximum VLANs to support : 8

Primary VLAN : DEFAULT_VLAN

802.1Q VLAN ID NAME Status

-------------- ------------- ------

1 DEFAULT_VLAN Static

222 GVRP_222 Dynamic

333 GVRP_333 Dynamic

Converting a Dynamic VLAN to a Static VLAN

If a port on the switch has joined a dynamic VLAN, you can use the following command to convert

that dynamic VLAN to a static VLAN:

static dynamic-vlan-id

Example 54 Converting a dynamic VLAN 333 to a static VLAN

When converting a dynamic VLAN to a static VLAN as shown here, all ports on the switch are

assigned to the VLAN in Auto mode.

HP Switch(config)#: static 333

About GVRP

GVRP (GARP VLAN Registration Protocol) is an application of GARP (Generic Attribute Registration

Protocol.) It enables a switch to dynamically create 802.1Q-compliant VLANs on links with other

devices running GVRP, and automatically create VLAN links between GVRP-aware devices. (A

GVRP link can include intermediate devices that are not GVRP-aware.) This operation reduces the

chances for errors in VLAN configuration by automatically providing VID (VLAN ID) consistency

across the network. After the switch creates a dynamic VLAN, the CLI static vlan-id command

can be used to convert it to a static VLAN if desired. Also GVRP can be used to dynamically enable

port membership in static VLANs configured on a switch.

Converting a Dynamic VLAN to a Static VLAN 71