Specifications

28 AT-8900, AT-9900, AT-9900s Series Switches

Software Release 3.0.2

C613-03092-00 REV C

Management Ports

The following management ports let you configure, monitor, and upgrade the

switch:

■ RS-232 Terminal Port (ASYN0)

■ Out-of-Band Ethernet Management Port (AT-9900s switch only)

RS-232 Terminal Port (ASYN0)

The RS-232 ASYN0 port is standard for the AT-8900, AT-9900, and AT-9900s

switches, and connects them to a management device for initial configuration.

This port allows the software on the switch to be accessed from a terminal or a

PC running terminal emulation software.

The ASYN0 port has an RJ-45 socket with an industry recognised pinout. This

requires using a straight-through RJ-45 cable with an RJ-45 DB9 connector

when the switch is connected to a terminal or PC. The socket is wired as a DTE

and the pin layout is shown in the following figure and table.

Out-of-Band Ethernet Management Port

The out-of-band 10/100/1000 Mbps Ethernet port is dedicated to management

traffic on the AT-9900s switch. Use it for initial configuration and on-going

management tasks. For remote access, use the default IP address,

192.168.242.242. This port is reserved for management only; the switch does

not transmit frames between this port and switch ports.

Pin Role

1RTS

2 DTR (DSR and DTR are connected but have no other internal connection)

3TXD

4GND

5GND

6RXD

7 DSR (DTR and DSR are connected but have no other internal connection)

8CTS

rjpin1