· Generic Attribute Registration Protocol (GARP) VLAN Registration Protocol (GVRP) is an application defined in the IEEE 802.1Q standard that allows for the control of VLANs.
· GVRP runs only on 802.1Q trunk links.
· GVRP prunes trunk links so that only active VLANs will be sent across trunk connections.
· GVRP expects to hear join messages from the switches before it will add a VLAN to the trunk.
· GVRP updates and hold timers can be altered.
· GVRP ports run in various modes to control how they will prune VLANs.
· GVRP can be configured to dynamically add and manage VLANS to the VLAN database for trunking purposes.
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