Nortel Networks 207344-B Network Configuration Examples, EtherSpeedII 100BASE-FX Switch Module

Using the Centillion EtherSpeedII Switch Modules

To connect the ports on the patch panel to another Ethernet switch or an Ethernet hub, follow these guidelines:

•Personal computers (PCs) and servers typically have network interface cards (NICs) that are configured as MDI connections. To connect these devices, use a straight-through cable.

•Hubs and other switches typically have connectors that are configured as MDI-X. Some hubs and switches have ports that are set by a toggle switch for either MDI or MDI-X operation.

—To connect a port set for MDI to the EtherSpeedII switch module port, use a straight-through cable.

—To connect a port set for MDI-X to the EtherSpeedII switch module port, use a crossover cable.

Note: For connector specifications for MDI and MDI-X ports, refer to

Appendix B, “Cables and Connectors.”

EtherSpeedII 100BASE-FX Switch Module

You connect the EtherSpeedII 100BASE-FX switch module ports to Ethernet hubs and network devices using MT-RJ patch cables as appropriate for your cabling environment.

Note: Because multimode fiber connections do not autonegotiate, the mode of the devices at both ends of a link must be identical (HDX or FDX).

Network Configuration Examples

The EtherSpeedII 10/100BASE-T switch module and the EtherSpeedII 100BASE-FX switch module are adaptable switches suitable for use in wiring closets or network centers in conjunction with the Centillion 50/100 chassis. Figure 2-1 shows an example of the EtherSpeedII switch modules in a sample network configuration.

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