HP ProCurve 2500 GVRP On, Features, Switch “D”, Figure 9-58.Example of GVRP Operation

Configuring Advanced Features

GVRP

Note that if a static VLAN is configured on at least one port of a switch, and that port has established a link with another device, then all other ports of that switch will send advertisements for that VLAN.

For example, in the following figure, Tagged VLAN ports on switch “A” and switch “C”, below advertise VLANs 22 and 33 to ports on other GVRP-enabled switches that can dynamically join the VLANs.

Switch “A”	Switch “C”
GVRP On	GVRP On

1		5
				Dynamic
				VLAN 22
	Tagged				11
	VLAN 22
				Tagged
				VLAN 33	12
	Switch “B”		Switch “D”
	(No GVRP)		GVRP On		3
	Tagged			Dynamic
	VLAN 22			VLAN 33
				Dynamic	6
				VLAN 22
Switch “D”:
Port 3 dynamically joined VLAN 33.
Port 6 dynamically joined VLAN 22.

Switch “C”:

Port 5 dynamically joined VLAN 22.. Ports 11 and 12 belong to Tagged VLAN 33.

2Switch “E” GVRP On

Dynamic

VLAN 33

7 Dynamic

VLAN 22

Switch “E”:

Port 2 dynamically joined VLAN 33. Lower port dynamically joined VLAN 22.

Features Advanced Configuring

	Figure 9-58. Example of GVRP Operation
N o t e	A port can learn of a dynamic VLAN through devices that are not aware of
	GVRP (Switch “B”, above). VLANs must be disabled in GVRP-unaware devices
	to allow tagged packets to pass through.

A GVRP-aware port receiving advertisements has these options:

■If there is not already a static VLAN with the advertised VID on the receiving port, then dynamically create a VLAN with the same VID as in the advertisement, and begin moving that VLAN’s traffic.

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