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2-12 Cisco 2500 Series Multiport Serial Router User Guide

Network Connection Considerations

This sections describes important cabling information that must be considered before

making your network connections. The Ethernet or Token Ring ports are used to connect

to a LAN; the synchronous serial ports are used to connect to a WAN; and the asynchronous

ports are used to provide remote access to the multiport serial routers.

Ethernet Connections

The Ethernet ports are located on the rear panel of the Cisco 2520 (labeled ETHERNET 0

AUI and UTP) and Cisco 2522 (labeled ETHERNET 0 AUI and 10BT) multiport serial

routers. Both ports are active, but only one can be used at a time. If both ports are connected,

the 10BaseT port is active.Use an Ethernet transceiver to connect multiport serial routers

directly to the network.

You can use the following equipment to connect to the Ethernet AUI port:

• An Ethernet AUI cable connected to a transceiver

• An Ethernet transceiver connected directly to the multiport serial router’s AUI port

The connection to the AUI port can be made using either slide latch connectors or

jackscrew connectors

Note Ethernet cables are not shipped as standard with the multiport serial routers.

The 10BaseT port is connected to the Ethernet through the twisted-pair wiring, and is

modular in design.

Token Ring Connections

The two Token Ring ports are located on the rear panel of the Cisco 2521 and Cisco 2523

and are labeled TOKEN RING or UTP. The port labeled TOKEN RING uses a standard

9-pin Token Ring lobe cable and connects the multiport serial router directly to a media

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Cisco 2513 Spezifikationen Seite 134