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The way to check the alarm that FC port is reported as disconnected frequently for S5500 V3 device

Publication Date:  2015-08-18 Views:  519 Downloads:  0
Issue Description
On the device manage page, you can see there are lots of alarms about the disconnected FC ports for both engine nodes, the alarm is like this “The FC host port (Controller Enclosure CTE0, -- controller B, port number H1) is disconnected”, within one minute, the alarm will recover automatically (as the picture below)
Alarm Information

For the alarm, we can check it in the event file as below:

Handling Process
1. Collect the logs of the system on the device manage page
2. Check the message log files according to the time when the alarm was reported, before that time, we can find lots of errors about the PCIE and IOC as below:
There are little records for PCIE

There are lots of records for IOC (here I only select part of them)
Root Cause
With the configuration file, we can see the version of the device is V300R002C10SPC100, sometimes, the IOC chip in the FC interface will received some invalid internal register value, and then the FC driver will reset the interface in order to recover the communication automatically
Solution
We suggest patching the system software by the patch V300R002C10SPH102, the link is as below:
http://support.huawei.com/enterprise/softdownload.action?lang=en&idAbsPath=fixnode01|7919749|7941815|21430818|21462748|21122039&pid=21122039&vrc=21123646|21141531|21325125|21623002&show=showVDetail&tab=bz&bz_vr=21141531&bz_vrc=&nbz_vr=21141531
Suggestions

None

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