Connecting Router To The Wan - 3Com 3C13701 Installation Manual

Connecting Router
to the WAN
Connecting the AUX
Port to the Modem
Follow the steps below to connect the Ethernet cable (taking LAN0/1 as an example):
1 While connecting the Router with a PC or a Router, please use the crossover cable, plug
one end of the cable to an Ethernet interface of the Router, and plug another end to a
PC or a Router. While connecting the Router with a Hub or a LAN Switch, please use the
straight-through network cable, plug one end of the cable to an Ethernet interface of
the Router, and plug another end to a HUB or LAN Switch.
2 Please check the LAN LED on front panel of the Router. ON means the link is connected.
3Com 5000 Routers provide multiple types of WAN interfaces, and the fixed WAN
interfaces include an AUX port and a WAN interface (synchronous/asynchronous serial
interface). This section describes the connection of the two interfaces.
Introduction to the AUX Port
As an RS232-compliant asynchronous serial interface, the AUX port can be used as the
backup of other WAN interface in the dial-up mode. In the event that the console port
fails, the AUX port can serve as a console port. For the attributes of the AUX port, please
refer to Table 15.
Table 15 Attributes of the AUX port
Attribute
Connector
Interface standard
Baud rate
Function
Protocol
AUX Cable
AUX cable is an 8-core shielded cable. One end of the cable is an RJ45 connector, which
can be plugged into the AUX port of the device. The other end is furnished at the same
time with a DB9 (male) connector and a DB25 (male) connector. Choose either one to
plug into the serial port of the modem as needed.
Description
RJ45
RS232
300 bps to 115200 bps
Modem dial-up
Backup
Operating as the console port when the CON fails
PPP
SLIP
MP

Connecting Router to the WAN

29