[cisco-voip] MCS-7845-I3 server locks up after IMM is restarted

[Ahmed Elnagar]

I know it could be a silly questions but Anyone have any idea what is
the IMM module is? 

I have the same symptoms for the below bug when I restart the Publisher
server from SSH access

 

Symptom:

 

CUCM Server becomes unresponsive after restarting the IMM module.

 

Conditions:

 

MCS-7845-I3 type servers if the module is restarted while the OS is
operational on rare occurrence,the server will become unresponsive. It
has been observed under this condition existing SSH sessions may remain
connected for a period of time however no new connections will be made.
CPU will be spiking to 100% where khubd or kipmi0 processes will be the
top CPU consumers. The only way to recover a server in this unresponsive
condition is to reboot the server which can be done via IMM.

 

Workaround:

For a permanent fix, perform a UCM upgrade to pick the up fix:

1) For UCM 6.x, upgrade to 6.1(5) and higher

2) For UCM 7.x, upgrade to 7.1(5) and higher

 

For a temporary workaroud:

1. Perform IMM configuration before installing UCM when customers
receive their 7835/45-I3 servers. For example, changing HTTP to HTTPS,
or perform any necessary FW update through IMM.

2. If reseting IMM is required after UCM is installed, DO NOT restart
IMM module while UCM is operational. Shut down UCM first before
restarting the IMM module.

 

  Best Regards;

  Ahmed Elnagar

  Senior Network PS Engineer

 

 

  RAYA Building El Motamiez District, 6th of October, Egypt 

 

  Mob: +2019-0016211

  Phone: +202 3827 6000 Ext.2475

  Website: www.rayacorp.com <http://www.rayacorp.com/> 

  E-mail: ahmed_elnagar at rayacorp.com <mailto:ahmed_elnagar at rayacorp.com>


  CCIE#24697 (Voice)

  

 

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