3com DSA-3CV1100-02 Manual De Usuario
Using a PC Terminal Emulator to Solve Problems
129
Abnormal Indications
from Traffic Counts
provides a quick reference to problem identification by using
frame counts:
Error Messages
There are two types of error messages that appear on the management
terminal screen:
terminal screen:
■
Advisory
The only error message of this type is
Wrong enter!
It appears when
the user enters the wrong response to a menu. The user solves the
problem by re-entering his response.
problem by re-entering his response.
When a user disconnects the management terminal from an LMI port and
later reconnects to the same port, the LMI menu system stays in the same
state and expects the same user input after reconnect. During reconnect
the user may press the wrong sequence of keys and cause
later reconnects to the same port, the LMI menu system stays in the same
state and expects the same user input after reconnect. During reconnect
the user may press the wrong sequence of keys and cause
Wrong enter!
to be displayed on the screen. Press the ENTER key a few times until a
menu appears.
menu appears.
■
Fatal
Almost all error messages that do appear are fatal. Contact Technical
Support when an error message, except for
Support when an error message, except for
Wrong enter!
, appears. The
.
Table 19 Summary of Problems Indicated by Counts of Errored Frames
Problem
Solution
Errored frame count of one of the following
Ethernet traffic counters differs from zero:
CRC error, Overrun, Alignment error, Frame
too long, or Frame too short.
Ethernet traffic counters differs from zero:
CRC error, Overrun, Alignment error, Frame
too long, or Frame too short.
Use an alternative VCN AC port or
replace the RJ-45 cable, or replace
the Ethernet switch. (in this order)
replace the RJ-45 cable, or replace
the Ethernet switch. (in this order)
Errored frame count of one of the following
HDLC traffic counters differs from zero:
Retransmission, Tx error, Overrun, Not mine,
or DPLL error. Or errored frame count of the
following HDLC traffic counters are frequently
incremented: Abort sequence, Nonaligned,
CRC error, Frame too long.
HDLC traffic counters differs from zero:
Retransmission, Tx error, Overrun, Not mine,
or DPLL error. Or errored frame count of the
following HDLC traffic counters are frequently
incremented: Abort sequence, Nonaligned,
CRC error, Frame too long.
Use an alternative VCN AC port or
replace the VCN AC unit.
replace the VCN AC unit.
Table 20 Fatal Error Messages
Error message
Significance
User Action
FATAL ERROR: SDRAM test
failed!
failed!
Hardware error during
boot-up
boot-up
Contact Technical Support.
FATAL ERROR: failed FLASH
access!
access!
Hardware error during
boot-up
boot-up
Contact Technical Support.