SMC Networks SMC8124PL2 manual Remote Connections with Fiber Cable, Making Vlan Connections

Application Examples 2

Remote Connections with Fiber Cable

Fiber optic technology allows for longer cabling than any other media type. A 1000BASE-SX (MMF) link can connect to a site up to 550 meters away, a 1000BASE-LX (SMF) link up to 5 km, and a 1000BASE-ZX link up to 100 km. This allows a switch to serve as a collapsed backbone, providing direct connectivity for a widespread LAN.

A1000BASE-SX SFP transceiver can be used for a high-speed connection between floors in the same building. For long-haul connections, a 1000BASE-ZX SFP transceiver can be used to reach another site up to 100 kilometers away.

The figure below illustrates three TigerSwitch 10/100/1000 units interconnecting multiple segments with fiber cable.

Headquarters

Warehouse

		1000BASE-LX SMF
		(5 kilometers)
	1000BASE-SX MMF
Server Farm	(500 meters)
	1000BASE-LX SMF	...
	(5 kilometers)
Remote Switch
	Remote Switch
	10/100/1000 Mbps Segments
...	...	Research & Development

...

Figure 2-3 Remote Connections with Fiber Cable

Making VLAN Connections

This switch supports VLANs which can be used to organize any group of network nodes into separate broadcast domains. VLANs confine broadcast traffic to the originating group, and can eliminate broadcast storms in large networks. This provides a more secure and cleaner network environment.

VLANs can be based on untagged port groups, or traffic can be explicitly tagged to identify the VLAN group to which it belongs. Untagged VLANs can be used for small networks attached to a single switch. However, tagged VLANs should be used for larger networks, and all the VLANs assigned to the inter-switch links.

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