G/C/B-Series 'show' command results in "Output will be truncated" errors


Userlevel 3
Article ID: 13747

Products
G3-Series, firmware 6.42.05.0001 and lower
C5-Series, firmware 6.42.05.0001 and lower
C3-Series, firmware 6.42.05.0001 and lower
C2-Series, firmware 5.02.12.0006 and lower
B5-Series, firmware 6.42.05.0001 and lower
B3-Series, firmware 6.42.05.0001 and lower
B2-Series, firmware 4.02.12.0006 and lower

Changes
Entered a command which displays more than 1024 lines of output, including but not limited to;
code:
show rmon stats
; -or-
code:
show multiauth session
; -or-
code:
show port lacp port
<[code]port-string[/code]>
code:
status detail
.

Symptoms
The system displays an incomplete set of output information, with added error messages:

code:
--More-- 
<
code:
space
>
code:
next page,
<
code:
cr
>
code:
one line,
<
code:
q
>
code:
quit

code:
Max number of lines in the scroll buffer reached. Output will be truncated.

code:
Max number of lines in the scroll buffer reached. Output will be truncated.

code:
Max number of lines in the scroll buffer reached. Output will be truncated.

code:
. . .

code:
Max number of lines in the scroll buffer reached. Output will be truncated.

code:
Max number of lines in the scroll buffer reached. Output will be truncated.

code:
Max number of lines in the scroll buffer reached. Output will be truncated.


Cause
This can occur when a non-default terminal length is set (e.g. '
code:
set length 23
') to limit the output of the terminal to x lines between pauses.
The 1024-line buffer used in this scenario is insufficient to store the generated command output.

Solution/Workaround
For the G-Series, upgrade to firmware 6.42.06.0008 or higher.
For the C5-Series, upgrade to firmware 6.42.06.0008 or higher.
For the C3-Series, upgrade to firmware 6.42.06.0008 or higher.
For the B5-Series, upgrade to firmware 6.42.06.0008 or higher.
For the B3-Series, upgrade to firmware 6.42.06.0008 or higher.
Release notes state, in the '
code:
Firmware Changes and Enhancements
' section:
code:
14996
code:
Resolved a CLI buffering issue which resulted in the following error message "Max number of lines in the scroll buffer reached. Output will be truncated". This was seen when using a non-default CLI screen length in a stacked environment.


For the C2-Series, upgrade to firmware 5.02.13.0003 or higher.
For the B2-Series, upgrade to firmware 4.02.13.0003 or higher.
Release notes state, in the '
code:
Firmware Changes and Enhancements
' section:
code:
15087
code:
Resolved a CLI issue whereby displaying output exceeding 1024 lines resulted in the following error "Max number of lines in the scroll buffer reached. Output will be truncated."


Pre-upgrade workaround:
Use a port-specific version of the '
code:
show...
' command to reduce the number of output lines;
-or-
issue the '
code:
set length 0
' command before reissuing the original '
code:
show...
' command.
The default length value of "
code:
0
" results in a continuing scroll until the output data is exhausted.

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