Fixed Interfaces
29
devices, such as PC to PC or PC to router. You can make crossover cables
yourself as needed.
n
In making network cables, shielded cables are preferred for electromagnetic
compatibility sake.
Connecting the Ethernet cable
Follow the steps below to connect an Ethernet cable:
Step 1: Connect one end of the Ethernet cable to an Ethernet port on the router
and the other end to another device.
■
For a 10/100 Mbps port provided by the RPU, connect it to a PC or another
router using a crossover cable or to a Hub or LAN switch using a
straight-through cable.
Step 2: View the LINK LED of the Ethernet interface: ON means a link is present.
Connecting AUX to a
Modem
AUX port
AUX is an RS232 asynchronous serial interface, which can back up a WAN
interface and provide dial connection. In case of console failure, AUX can function
as a console interface.
AUX cable
AUX cable is an eight-wire shielded cable. At one end of the cable is an RJ-45
connector for connecting the console port on the router. At the other end are
DB-9 (male) connector and DB-25 (male) connector. You can plug either of them
into the serial port on a modem as needed.
Figure 15
AUX cable
Connecting the AUX cable
Follow these steps to connect the AUX cable.
Step 1: Plug the RJ-45 connector of the cable into the AUX port on the main
board.
Step 2: Plug the DB-25 or DB-9 connector into the serial port on the analog
modem.
When using the AUX interface for remote configuration or dial backup, you need
to connect the local modem to the remote modem through PSTN and then to the
Содержание MSR 20-20
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