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

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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;
show rmon stats;  -or- 
show multiauth session;  -or- 
show port lacp port <port-string> status detail.

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

--More-- <space> next page, <cr> one line, <q> quit
Max number of lines in the scroll buffer reached. Output will be truncated.
Max number of lines in the scroll buffer reached. Output will be truncated.
Max number of lines in the scroll buffer reached. Output will be truncated.
  . . . 
Max number of lines in the scroll buffer reached. Output will be truncated.
Max number of lines in the scroll buffer reached. Output will be truncated.
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. '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 'Firmware Changes and Enhancements' section:
14996   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 'Firmware Changes and Enhancements' section:
15087   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 'show...' command to reduce the number of output lines;
      -or-
issue the 'set length 0' command before reissuing the original 'show...' command.
The default length value of "0" results in a continuing scroll until the output data is exhausted.
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Posted 4 years ago

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