Capturing POST boot up messages

Answered Question
Oct 14th, 2008
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Does anyone know whether the boot up POST messages are kept somewhere on the devices itself? For instance debug messages are kept in local log buffer (show log) but I have no idea whether the POST messages are kept or not. Thanks for your feedback.

Correct Answer by Joe Clarke about 8 years 5 months ago

This won't work for routers. It does work for desktop switches running 12.2(25)SEE and higher. The 2950s cannot run that code, but do offer a "show post" command.

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Joe Clarke Tue, 10/14/2008 - 16:50
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Depends on the device type, but "show diagnostic post" should work on the desktop switches.

vincent-n Tue, 10/14/2008 - 17:06
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Thanks for the reply. I found that this must be some kind newer OS for this command but I found no trace of it on Cat2950 (IOS 12.1.14), Cat3750 (IOS 12.2.25), Cisco 2811 (IOS 12.4.9) and those are the kind of devices I have in my network. the closest is on the cisco 2811 router that shows:


CarzoSYD01c2801#sho diag?

diag


Router#sho diag

Router#sho diag ?

<0-0> Slot number

| Output modifiers


Router#sho diag

Correct Answer
Joe Clarke Tue, 10/14/2008 - 17:09
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This won't work for routers. It does work for desktop switches running 12.2(25)SEE and higher. The 2950s cannot run that code, but do offer a "show post" command.

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