3Com 3C17500 Installation Manual page 7

RS232/RS485 port
■
Console Port
■
AUX (Modem) Port
■
Compact Flash (CF) Port
The Fabric module provides a CF port to accommodate a standard CF card, where
you can save logging information, host version information, alarming and other
diagnostic information. You can also use the CF port to upgrade software online.
Management 10Base-T/100Base-TX port
The management 10Base-T/100Base-TX port is connected to a computer using an
RJ-45 connector. You can use this port for system application downloading and
debugging. The management 10Base-T/100Base-TX port can also be connected to
devices such as a network management workstation to manage the system
remotely. Table 5 lists specifications for the management 10Base-T/100Base-TX
port.
Management 10Base-T/100Base-TX Port Specifications
Table 5
Specification
Port connector
Number of ports
Port speed
Maximum transmission
segment over the selected
medium
Services
See "RJ-45 Connector" on page 56 for an illustration of the RJ-45 connector.
Table 6 describes the LEDs of the management 10Base-T/100Base-TX port.
Management 10Base-T/100Base-TX Port
Table 6
LED
LINK
ACTIVE
RS232/RS485 port
The RS232/RS485 port uses an RJ-45 connector to connect to an external power
rack and monitor its status. Table 7 lists specifications for the RS232/485 port.
RS232/RS485 Port Specifications
Table 7
Specification
Connector
Number of ports
Functionality
Description
RJ-45
1
10 Mbps, half duple/full duplex
100 Mbps, half duplex/full duplex
100 m (328 ft) over the category-5 twisted pair cable
(crossover cable is required.)
System software upgrade and network management
LEDs
Description
Off — The line is not connected.
Green — The line is connected.
Green — No data is being transmitted.
Green flashing — Data is being transmitted.
Description
RJ-45
1 RS 232 or RS485 port depending on the type of cable.
Reserved for monitoring and communication with an
external subsystem
Fabric Module 7