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Knowledge Base

Mezz card issue

Publication Date:  2014-08-29  |   Views:  234  |   Downloads:  0  |   Author:  SU1000781244  |   Document ID:  EKB1000049577


Issue Description

The customer cannot find any interface cards in his equipment. Even in dmesg there is no trace of Emulex cards.

This issue appear in 2 blades on customer E9000. OS- Centos 6 and Windows Server 2012

- Ifconfig –a (only showing lo)
- Dmesg | grep –i Emulex (no output)
- Dmesg | grep –i eth (no output related to networkcards)

Alarm Information

the customer didn't receive any alarms from his equipment, also in iMana he didnt have any alarms or warnings.

Handling Process

For this two blades -the customer's blades- which encounter the NIC problem, Centos-6 and windows 2012, we suggest to upgrade the firmware and driver first and then to check if it will happen again.

First step:

upgrade the firmware, by using the upgrading tool as the link below.!getSoftwareInfo.action?nodePath=fixnode01|7919749|9856522|9856786|19955022|19961380|19962084|19962085|19962087|21251576&idAbsPath=fixnode01|7919749|9856522|9856786|19955022|19961380&version=Tecal+E9000+Chassis+V100R001C00SPC180&hidExpired=&contentId=SW1000072526

Second step:

upgrade the driver. For the windows, you can find it in the link below. For Centos, we don’t have the corresponding driver for MZ910. .|7919749|9856522|9856786|19955022|19961662&pid=19961662&vrc=19962122|19962123|19962125|21251562&show=showVDetail&tab=bz&bz_vr=19962123&bz_vrc=&nbz_vr=null
We can find instruction for how to do this upgrade in :  "Tecal E9000 MZ510&MZ512&MZ910 NIC Firmware Upgrade Guide"  from our public library.

Root Cause

 The Customer rebooted the server to check if anything was wrong in logs or something but he could not find any problem.

After the machine was booted, I noticed the Emulex bios was displaying again and in Linux he has all the interfaces back without any phisical intervention.

After a reboot it was fixed on that machine.


run these commands several time to see all the interfaces, ethX can be eth0, eth1, eth2, …

ethtool -i ethX    

After that this comands for more information related to OS and system.

uname -a
lsb_release -a
ifconfig -a