IBM 8275-416, User Manual

Page: 24 / 156

Front panel
Switch LEDs
Switch LEDs are located at the lower left corner of the front panel (left of
the single-digit display) and are identified with a vertical bar (I), OK, and
Fault. The LED identified with the vertical bar and the OK LED are Green;
the Fault LED is amber. The states of the LEDs are
on , off , or blinking .
They are explained later in this chapter.
Single-Digit Display
The single-digit display is located at the lower left corner of the front panel
as shown in Figure 3 on page 10. During diagnostics, the character
displayed indicates the diagnostic test being executed. Once the switch is
operational, the character displayed is its unit ID (Table 3 on page 11).
Serial Port (EIA 232)
The serial port is a standard DB-9 male connector that provides an EIA 232
serial interface (sometimes referred to as the out-of-band management
port). Use a null-modem serial cable when connecting to a workstation
(“Appendix C. Cable Pinout Diagrams” on page 109). Use a VT100 terminal
emulator program to configure your terminal’s attached COM port as
follows:
v
19200 baud
v
8 data bits
v
1 stop bit
v
No parity
v
Hardware flow control OFF
See “Chapter 2. Accessing the switch” on page 19 for more information
about connectivity.
Ethernet 10/100BASE-TX Ports
The switch has 16 Ethernet 10/100BASE-TX ports. Each port has two LEDs
located at the lower right and left of the connector. Status indications of the
Port LEDs are explained later in this chapter.
Feature Module Slots 1 and 2
These feature modules are available to expand port connections for your
switch:
v
8-Port 10/100BASE-TX Ethernet Feature Module, P/N 30L6661
v
8-Port 100BASE-FX Ethernet Feature Module, P/N 30L6662
Figure 2. Front panel of the switch.
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8275-416 User’s Guide