IBM TotalStorage L10, Cli Reference Manual

Page: 25 / 96

Chapter 2. Configuration menu (root/config)
13
Configuring the CRC Error Threshold (root/config/sys/crcerr)
The cyclic redundancy check (CRC) Error Threshold is the maximum number of CRC
errors allowed in a 10-second interval before a port is bypassed. Setting this value to ‘0’
returns the threshold to the factory default setting. The default setting is 3.
To change the threshold:
1. From the System Configuration menu (root/config/sys), type
crcerr
and press
E
NTER
.
The current value appears in brackets before the command prompt.
2. Type the new value and press E
NTER
. The valid range is from 0 to 255.
To view the current CRC Error Threshold:
From the Root menu, type
show sysinfo
and press E
NTER
.
Setting the Blocking Arbitration AL_PA (root/config/sys/blkarb)
When two ports start a communication session, the Blocking ARB is sent to all other
ports trying to communicate with those ports until the connection is terminated. The
default setting is ‘FF’. If other connected devices use the ‘FF’ setting for a different
purpose, select another Blocking ARB value (for example, ‘FB’). Under normal
circumstances, this setting does not need to be modified.
To change the blocking ARB value:
1. From the System Configuration menu (root/config/sys), type
blkarb
and press
E
NTER
.
The current value appears in brackets before the command prompt.
2. Type the desired selection (
1-6
) and press E
NTER
.
To view the current Blocking Arbitration AL_PA:
From the Root menu, type
show sysinfo
and press E
NTER
.
Table 7. Blocking Arbitration AL_PA
Setting Description
1 xF7
2 xF8
3 xFB
4 xFD
5 xFE
6 xFF