Advertisements and dynamic joins

When you enable GVRP on a switch, the default GVRP parameter settings allow all of the switch's ports to transmit and receive dynamic VLAN advertisements (GVRP advertisements) and to dynamically join VLANs.

Enabling GVRP:

  • Allows a port to both advertise and join dynamic VLANs (Learn mode—the default).

  • Allows a port to send VLAN advertisements, but not receive them from other devices; that is, the port cannot dynamically join a VLAN but other devices can dynamically join the VLANs it advertises (Block mode).

  • Prevents a port from participating in GVRP operation (Disable mode).