request platform software process core ios chassis active Ro impact

[tejas-veer]

Hello ,

Can someone explain the impact/affect of command "request platform software process core ios chassis active r0" on cisco 9800 WLC ?

Will there be any impact on connected users?

[Mark Elsen · Accepted solution]

  - @tejas-veer           Ref : https://sec.cloudapps.cisco.com/security/center/resources/forensic_guides/iosxe_wlc_forensic_guide.html#Step6
                               >...
                              Step Six – Core File Generation

This procedure outlines how to configure a Cisco Wireless Controller to obtain a core dump of platform memory. A crash information file is created in the root of the bootflash filesystem, and the core file is created in the bootflash:/core subdirectory.

Caution: This section contains commands that alter the configuration of the wireless controller, and that may cause the platform to reboot. It is of critical importance that all the preceding information-gathering steps have been completed successfully or important evidence may be permanently lost. Creating core dumps may also cause spikes in memory consumption and momentary disruptions to traffic that is transiting the device if a standby wireless controller has not been deployed in the environment.

The steps to acquire a core dump of the IOSd process are as follows:

conf t
service internal
show platform software process environment ios chassis active r0
request platform software process core ios chassis active r0

[tejas-veer]

Thank you @Mark Elsen ,

Took the risk and used the command. luckily did not observed any interruption while generating the core dump.

[Mark Elsen]

    - @tejas-veer             You have been very lucky , I tested the command on a controller in my Lab
                                      and it rebooted (crashed) ;   show version | inc reload  
                                      reported a reload due to a critical software exception.
                                            Advising not to repeat the command on a production controller

  M.

[Rich R]

Definitely only something to risk doing during a maintenance window.

[tejas-veer]

Thank you @Rich R   ,

Took the risk and used the command. luckily did not observed any interruption while generating the core dump.