3Com 4200G Getting Started Manual page 17

1000BASE-X SFP Ports
Console Port
Unit Status Display
Table 3 Status Display
Display
Digit (1–9)
Digit (0–8)
Rotating bar segment
SFP (Small Form Factor Pluggable) ports support fiber Gigabit Ethernet
long-wave (LX), long-haul (LH70) and copper (T) SFP Transceivers in any
combination. This offers you the flexibility of using SFP transceivers to
provide connectivity between the Switch and remote 1000 Mbps
workgroups or to create a high capacity aggregated link backbone
connection.
The default state for these ports is auto-negotiation enabled, where the
speed, duplex and flow control modes are negotiated. As the speed and
duplex modes are fixed by the media type, only the flow control is
negotiated with the link partner. Alternatively, auto-negotiation can be
disabled (except 1000BASE-T which auto-negotiation is mandatory) and
the flow control setting can be manually configured.
The console port allows you to connect a terminal and perform remote or
local out-of-band management. As the console port on the Switch is an
RJ-45 port, you will need to connect an RJ-45 to DB9 converter cable to a
standard null modem cable in order to connect a terminal.
The Status Display is a seven segment display visible on the front of the
switch. The Status Display indicates switch status conditions such as the
unit number, POST test ID, and software upgrade information. In the
unlikely event of a hardware fault, you can use the Status Display to help
diagnose the problem. For information on using the Status Display for
problem solving, see "Solving Problems Indicated by LEDs" on page 58.
Mode LED Color
Mode LED flashing green
Mode LED flashing red
Mode LED flashing green
Switch 4200G—Front View Detail
Description
POST (power-on startup tests) running.
POST failure. Digit indicates ID of failed test.
0 POST test OK
1 CPU error
2 Switch chip error
3 RAM error
4 Flash error
5 Port error
6 PHY error
7 Packet memory error
8 CPLD error
Software download in progress.
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