KB.15.15

Example 52 Changing the Unknown VLAN field

In the following example, the first command changes the configuration to Block, the second

command requests to show the new configuration:

HP Switch(config)#: interface 1-2 unknown-vlans block

Switch(config)#: show gvrp

GVRP support

Maximum VLANs to support [256] : 256

Primary VLAN : DEFAULT_VLAN

GVRP Enabled [No] : Yes

Port Type | Unknown VLAN Join Leave Leaveall

---- --------- + ------------ ----- ----- --------

1 10/100TX | Block 20 300 1000

2 10/100TX | Block 20 300 1000

3 10/100TX | Learn 20 300 1000

4 10/100TX | Learn 20 300 1000

When you enable GVRP on a switch, you have the per-port join-request options listed in the following

table:

Table 7 Options for handling unknown VLAN advertisements

OperationUnknown VLAN Mode

Enables the port to become a member of any unknown VLAN for which it receives

an advertisement. Allows the port to advertise other VLANs that have at least one

other port on the same switch as a member.

Learn (the Default)

Prevents the port from joining any new dynamic VLANs for which it receives an

advertisement.

Block

Allows the port to advertise other VLANs that have at least one other port as a

member.

Causes the port to ignore and drop all GVRP advertisements it receives and prevents

the port from sending any GVRP advertisements.

Disable

Listing static and dynamic VLANs on a GVRP-enabled switch

Syntax:

show vlans

Lists all VLANs present in the switch.

70 GVRP