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11-45

Port-Based Virtual LANs (VLANs) and GVRP

GVRP

Displaying the Static and Dynamic VLANs Active on the Switch. The

show vlans command lists all VLANs present in the switch.

Syntax: show vlans

For example, 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.

Figure 11-32. Example of Listing Showing Dynamic VLANs

Switch “A”

GVRP enabled.

3 Static VLANs:

–DEFAULT_VLAN

–VLAN-222

–VLAN-333

Switch “B”

GVRP enabled.

1 Static VLANs:

– DEFAULT_VLAN

Port 1: Set to

“Learn” Mode

Dynamic VLANs

Learned from

Switch “A”

through Port 1

!Software.book Page 45 Thursday, October 10, 2002 6:10 PM

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