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Cisco Bug: CSCsy96291 - Commands run while ISSU commands run may produce error/truncated output

Last Modified

Dec 04, 2015

Products (1)

  • Cisco ASR 1000 Series Aggregation Services Routers

Known Affected Releases


Description (partial)

Commands that are executed while ISSU and package management commands 
are executing may not return expected results.  Commands may fail with 
an error or fail to produce complete output.  The specific symptom 
depends on the specific effect that the ISSU or package management 
command has on the system, which will vary by the procedure used, the 
operating state of the router, and the system modules impacted.  
Errors, truncated output or both should be expected for a variety of 
commands during this period and immediately after the completion of 
the ISSU command (e.g., a module that is reloaded by the ISSU activity 
may result in certain commands failing until that module returns to 

Long-running, automore-paused, or commands with continuous output 
should also be expected to terminate or end in an error under these 

The issue may occur during the execution of an ISSU or package 
management command (between the time the user invokes the command
and when that ISSU command returns results and for a variable period
of time thereafter, in some cases) a command that interacts a 
module that is specifically impacted by the software
package change is run via a different user session (a user or 
automaton connected via telnet or ssh, automatic local execution
via EEM or tcl, or a command executed on the standby console).
Commands that query system modules that are being upgraded may return
unexpected results, errors, or truncated output depending on the exact
timing of the command execution..
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Bug Details Include

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  • Status
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