Connecting the Router to the WAN 27When connecting the router to a hub or a LAN switch, use the straight-throughnetwork cable.3 Connect one end of the Ethernet cable to the appropriate Ethernet module on therouter.4 Connect the other end of the Ethernet cable to the Ethernet interface of the Hubor the LAN switch.5 Verify the connection by checking that the 100M ETH LED on the top of the routeris on.Connecting the Routerto the WANThe Router 3000 series routers provide the following WAN interfaces:■ AUX port (all models)■ Mutiprotocol synchronous/asynchronous serial port (Router 3012, Router3013, Router 3015)■ ISDN S/T (Router 3013)■ ISDN U (Router 3015)■ CT1/PRI ( Router 3016)Connecting the AUXPort to the ModemThe auxiliary (AUX) port is an EIA/TIA-232-compliant sync/async serial interfacethat is used for remote configuration or dial-up backup. To be connected to aremote device, a local modem must be connected to a remote modem throughPSTN. For the connection method, see Chapter 4, Booting and Configuring theRouter. If the console port fails, the AUX port can also serve as a console port. ForAUX port specifications, see Chapter 1, Overview.The AUX cable is an 8-core shielded cable. One end of the cable has an RJ-45connector and connects to the AUX port of the router. The other end has both aDB-25 (male) adapter and a DB-9 (male) adapter. Use the appropriate connectorfor the port on the modem.Figure 6 illustrates the AUX cable.Figure 6 AUX Cable AssemblyEnlarged B sideEnlarged A sideEnlarged C sideDB25 MaleLabelDB9Male8P8C Plug