HP ProCurve Switch 6120G/XG Management Manual page 99

Rebooting a switch on which a dynamic VLAN exists deletes that VLAN.
■
However, the dynamic VLAN re-appears after the reboot if GVRP is
enabled and the switch again receives advertisements for that VLAN
through a port configured to add dynamic VLANs.
■ By receiving advertisements from other devices running GVRP, the switch
learns of static VLANs on those other devices and dynamically (automat-
ically) creates tagged VLANs on the links to the advertising devices.
Similarly, the switch advertises its static VLANs to other GVRP-aware
devices, as well as the dynamic VLANs the switch has learned.
A GVRP-enabled switch does not advertise any GVRP-learned VLANs out
■
of the port(s) on which it originally learned of those VLANs.
■ A VLAN enabled for jumbo traffic cannot be used to create a dynamic
VLAN. A port belonging to a statically configured, jumbo-enabled VLAN
cannot join a dynamic VLAN.
GVRP
GVRP Operating Notes
3-19