IBM 3745 Problem Determination Manual page 325

Token-Ring Problems
INITIALIZATION ERROR
xx
Table
12-1.
Token-Ring - Initialization Error Description and Action
Initialization
Error
01 to 07
08 to 13
Error Description and Action
The specified initialization parameter
("0
on previous screens), was found to be invalid
by the TIC microcode.
• Use the CDF function (LA and" port display) to see the valid options for the TIC and
compare them to the generation parameters and correct if necessary. Then ask the
host operator to activate the link for this TIC.
• If the problem persists, use the MOSS ELD function to analyze the TRSS BERs type
15 related to the last encountered tOken-ring problems .. By using the ELD detail
screen, you may find additional information which can help you fix the problem.
• If not yet fixed then
CO
and give BER information.
The specified hardware problem
(II
on previous screens), has been detected by the
TIC.
• Ask the host operator to activate the link for this TIC.
• If the problem persists, use the MOSS ELD function to analyze the TRSS BERs type
15 related to the last encountered token-ring problems. By using the ELD detail
screen, you may find additional information which can help you fix the problem. If
not yet fixed then
CO
and give BER information.
OPEN ERROR
xx:
The meaning of each open error and actions to perform is given below.
Table 12-2 (Page 1 of 2). Token-Ring - Open Error Description and Action
Open Errors
INVALID PARAMETER
FUNCTION FAILURE (01)
SIGNAL LOSS (02)
Open Error Description and Action
An open parameter was found to be invalid by the TIC microcode.
• Check the installation and generation parameters, and correct them if
necessary. Then ask the host operator to activate. the link for this TIC.
• If the problem persists, use the MOSS ELD function to analyze the
TRSS BERs type 15 related to the last encountered token-ring
problems. By using the ELD detail screen, you may find additional
information which can help you fix the problem. If not yet fixed then
CO
and give BER information.
The lobe media test has failed, or another MAC frame was seen on the
ring during the lobe media test (Phase 0).
• Unplug the lobe cable from the IBM 8223.
• Ask the host operator to activate the link for this TIC.
• If the problem persists, unplug the TRA cable for this TIC and ask the
host operator to reactivate the link, then look.at RING STATUS, (field
iii
on the screen):
- LOBE WIRE FAULT is ON (without any other status ON): Change
the TRA cable.
- Another ring status (field
iii)
is ON: Perform appropriate action.
The TIC is detecting no signal on the ring at the
~eceiver
side.
• Ask the host operator to activate the link for this TIC.
• If the problem persists, refer to the Token-Ring Network Problem
Determination Guide in conjunction with page 12'-11 of this guide.
12-4
IBM 3745 Communication Controller: Problem Determination Guide
o