3Com 3C13755-US - Router 5642 Installation Manual

Also see for 3C13701: Installation guide Quick reference guide Installation guide Getting started guide Module guide

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3Com 3C13755-US - Router 5642 Installation Manual Manual pdf 66 page image

64 CHAPTER 4: INSTALLING THE R OUTERFigure 66 Connecting the Router to the EthernetConnecting the Routerto the WANThe Router 5000 Family provides two fixed WAN ports, and gives you the optionto install further WAN ports as required. The fixed ports are the AUX port and theserial port. The additional ports are provided by the SICs and MIMs supported bythe Router.Connecting the AUXPort to the ModemThe auxiliary (AUX) port is a serial port that is used for remote configuration ordial-up backup. To connect the router to a remote device, a local modem must beconnected to a remote modem through PSTN. For the connection method, seeChapter 5. For AUX port specifications, see Chapter 1.If the console port fails, the AUX port can also serve as a console port.To connect the AUX cable:1 Turn off power to the router.2 Plug the RJ-45 connector of the AUX cable into the AUX port of the router.3 Connect the DB-25 or DB-9 adapter of the AUX cable to the serial port of theanalog modem, as shown below.Figure 67 Connecting the AUX Port to the Analog ModemConnecting the SerialPort to a CSU/DSUThe serial port is usually used to connect the router to DSU/CSU.Plugging or unplugging the connectors of the serial cable on line can damage therouter or the remote device.10/100M EthernetinterfaceETHERNET0 interfaceEthernet cableLAN switch or hubModemAUX cableAUX portSerial interface