HP 2500 Port-Based Virtual LANs Static VLANs, Address would normally belong to the same Vlan

Configuring Advanced Features

Configuring Advanced Features

Port-Based Virtual LANs (Static VLANs)

Port-Based Virtual LANs (Static VLANs)

	VLAN Features
		Feature	Default	Menu	CLI	Web
		view existing VLANs	n/a	page 9-57	page 9-63	page 9-68
				thru 9-62
		configuring static	default VLAN with	page 9-57	page 9-62	page 9-68
		VLANs	VID = 1	thru 9-62
		configuring dynamic	disabled	See “GVRP” on page 9-77.
		VLANs
	A VLAN is a group of ports designated by the switch as belonging to the same
	broadcast domain. (That is, all ports carrying traffic for a particular subnet
	address would normally belong to the same VLAN.)
N o t e	This section describes static VLANs, which are VLANs you manually config-
	ure with a name, VLAN ID (VID), and port assignments. (For information on
	dynamic VLANs, see “GVRP” on page 9-77.)

Using a VLAN, you can group users by logical function instead of physical location. This helps to control bandwidth usage by allowing you to group high- bandwidth users on low-traffic segments and to organize users from different LAN segments according to their need for common resources.

By default, the Series 2500 switches are 802.1Q VLAN enabled and allow up to 30 port-based VLANs (default: 8). For information on GVRP, see “GVRP” on page 9-77. (The 802.1Q compatibility enables you to assign each switch port to multiple VLANs, if needed, and the port-based nature of the configuration allows interoperation with older switches that require a separate port for each VLAN.)

General Use and Operation. Port-based VLANs are typically used to enable broadcast traffic reduction and to increase security. A group of net- work users assigned to a VLAN form a broadcast domain that is separate from other VLANs that may be configured on a switch. Packets are forwarded only between ports that are designated for the same VLAN. Thus, all ports carrying traffic for a particular subnet address should be configured to the same VLAN. Cross-domain broadcast traffic in the switch is eliminated and bandwidth is

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