Patton electronic 2160 user manual 802.1Q Vlan

Model 2160 Series User Manual 4 • Web configuration

Ports in the same VLAN group share the same frame broadcast domin thus increase network performance through reduced boardcast traffic. You can modify VLAN groups at any time by adding, moving or changing ports without any re-cabling.

SERVER

802.1Q VLAN

LAN1

LAN2 STU-C

		1	2	3	4		CopperLink“2160
		WAN				LINK	Long Range Ethernet Extender
						LINK/ACT
PWR ALM	DIAG	LAN				100M

LAN1

STU-R LAN2

	1	2	3	4		CopperLink“2160
	WAN				LINK	Long Range Ethernet Extender
					LINK/ACT
PWR ALM DIAG	LAN				100M

	CopperLink Model 2160
LAN3	Extender connection
	LAN3

SERVER

1	2	3	LAN4
4	5	6
7	8	9
*	0	#

VOIP

LAN4	1	2	3
	4	5	6
	7	8	9
	*	0	#

VOIP

Figure 18. 802.1Q VLAN diagram

Configuring 802.1Q VLAN Tagging. Before enabling VLANs for the Model 2160, you must first assign each port to the VLAN group(s) in which it will participate. By default all ports are assigned to VLAN1 as untagged ports. Add a port as a tagged port if you want it to carry traffic for one or more VLANs, and any intermediate network devices or the host at the other end of the connection supports VLANs. Then, assign ports on the other VLAN-aware network devices along the path that will carry this traffic to the same VLAN(s), either manually or dynamically using Generic VLAN Routing Protocol (GVRP). However, if you want a port on this Model 2160 to participate in one or more VLANs, but none of the intermediate network devices nor the host at the other end of the connection supports VLANs, then you should add this port to the VLAN as an untagged port.

Note VLAN-tagged frames can pass through VLAN-aware or VLAN- unaware network inter-connection devices, but the VLAN tags should be stripped off before passing it on to any end-node host that does not support VLAN tagging.

•VLAN Classification - When the Model 2160 receives a frame, it classifies the frame in one of two ways. If the frame is untagged, the Model 2160 assigns the frame to an associated VLAN (based on the default VLAN ID of the receiving port). But if the frame is tagged, the Model 2160 uses the tagged VLAN ID to identify the port broadcast domain of the frame.

•Port Overlapping - You can use port overlapping to allow access to commonly shared network resources among different VLAN groups, such as file servers or printers.

Advanced Configuration Options 47