IBM 3745 Service Functions page 36

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BER
A selection number for a BER 01-85 is displayed with the event description
related to the latest BER put into BER 01-85. You may scroll on the BER detail
screen to display the other BERs contained in the BER 01-85 using F7 (pre-
vious).
In the example above, the event description first displayed on the BER detail
screen for SEL# 233 refers to SEL# 233.3 BER 01-11. Pressing F7 displays SEL#
233.2 BER 01-03. Pressing F7 a second time displays SEL# 233.1 BER 01-00. If
you scroll forward to SEL# 233 from SEL# 232 using F8 (next), the next detail
displayed will be SEL# 233.3. You must then use F7 to display SEL# 233.2 and
233.1 as described above.
BER 01-85 applies to the following accesses:
• File access
• NCP/EP access (mailboxes)
• CCU access
• Display/keyboard access.
BER Storage on Disk
BER Type and 10
,
The MOSS stores the BERs, prepared in the MOSS RAM, on the wraparound
BER file on disk in their order of arrival. The BER file can contain an average
of 250 BERs.
When the BER file is full, the next BER to arrive overwrites the oldest BER (or
BERs) in the BER file.
All BERs are characterized by a type and an 10.
• BER Type
The type points to the general area of BER occurrence:
01
02
03
04
10
11
12
13
14
15
MOSS-related events (plus errors/events recorded by the MOSS when
it takes control of the box or operations such as CCU hardcheck, LA
events, and so on).
Alarms
Events related to diagnostics (BER details not displayable).
Events related to the power control operations.
NCP events related to channel adapter operations.
NCP events related to transmission subsystem (including HPTSS) oper-
ations.
NCP control program exceptions (software events detected by the hard-
ware, or hardware events corrupting the software).
NCP CCU-related events when the NCP/EP has control (excluding the
CCU hardcheck).
NCP IOC bus-related events (when not possible to isolate them to a
specific adapter).
NCP events related to token-ring subsystem operations.
Chapter 2. BER (Box Event Records) Analysis
2-3