IBM 3745 Problem Determination Manual page 327

Token-Ring Problems
Interpreting Fields
m
--------------------------------------------------------.------------------------- m
m/ddlw h h :
m m
FUNCTI ON ON SCREEN: TRSS I NTERF DSPLY
TOKEN-RI NG I NTERCOtltlECTI ON
NODE ADDR
GROUP ADDRESS:
FUNCTIONAL ADDR:
IR:
BR:
OPERATI NG SPEED: 16
INITIALIZATION ERROR 11:
===>
F1:END F2:MENU2 F3:ALARM
RING STATUS:
SIGNAL LOSS:
HARD ERROR: ON
SOFT ERROR: ON
TRANSMIT BEACON: ON
LOBE WIRE FAULT:
AUTO REMOVAL ERROR 1: ON
REMOVE RECEIVED: ON
COUNTER OVERFLOW:
SINGLE STATION:
I '
RI NG RECOVERY:
DMA BUS ERROR
II
F5:REFRESH F6:SELECT
The meaning of each ring status indicator and the actions to perform are given below.
Table 12-3 (Page 1 of 3). Token-Ring - Ring Status Indicator Description and Action
Ring Status IndicatorS
SIGNAL LOSS
HARD ERROR
SOFT ERROR
TRANSMIT BEACON
Description and Action
A receiver exception currently exists in the TIC. The TIC is not receiving
signals from the ring. This is a temporary condition and will either be
recovered by the ring protocol or will go into a beacon condition (see
HARD ERROR).
The TIC is transmitting or repeating beacon MAC frames. (See also
TRANSMIT BEACON.)
The TIC has transmitted a soft error report frame. This is
ring-recoverable.
• No action if SOFT ERROR is ON from time to time.
• If SOFT ERROR is permanently ON:
- General traffic degradation over all the Ring Stations includi"ng
this adapter station:
If no: no 'action
If yes: Refer to the token -Ring Network Rroblem
Determination Guide, SX27-3710 for Soft Errors investigation
and resolution.
- Traffic degradation over this adapter station only:
Check the correct connections of the lobe cable between the
Adapter and the MAU.
If the problem persists:
~
Used in conjunction with HARD ERROR. If both indicators are ON, this TIC
is generating beacon frames. Same as HARD ERROR.
·12~6
IBM 3745 Communication Controller: Problem Determination Guide
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