Problem with a Network Interface

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Operating Systems AIX Problem with a Network Interface
# 1  
Old 10-08-2007
Problem with a Network Interface

Hi every body,

I have a Fiber Channel interface (fcs2) in AIX 5.2. This interface was fine & up but for some reason I could not return this interface UP again after I set it DOWN.

When I tried to set this interface UP I encountered the following error:

Method error (/usr/lib/methods/chgif.fc):
0514-085 Error controlling a device path in the kernel.
/usr/lib/drivers/if_fc: There is an input or output error.
0821-510 ifconfig: error calling entry point for /usr/lib/drivers/if_fc: There is an input or output error.
0821-223 chgif: Cannot get records from CuAt.
0821-229 chgif: ifconfig command failed.
The status of"fc2" Interface in the current running system is uncertain.

I don't understand what is the meaning of this error & how to resolve this problem.

Thank in advance.

Last edited by aldowsary; 10-08-2007 at 07:20 PM..
# 2  
Old 10-08-2007
I know this sounds like a windows help desk solution but does the device normally come up after a reboot? (hint hint)

Oh, and why did you set it down?
# 3  
Old 10-08-2007
I reboot the system but the problem still exist.
# 4  
Old 10-08-2007
What were you doing with it to set it down?

What is the device connected to, is that all up and healthy?

Are you doing the changes manually or using "smit"?
# 5  
Old 10-08-2007
I invoked the following command to set the interface down:
>> ifconfig fcs2 inet down
After that I could not return it UP again neither using command line nor SMIT.

This used this interface to connect to another server directly using Fiber (Back-to-Back).

Also when I tried to remove this interface and create again I could not.
# 6  
Old 10-08-2007
I did find this on the net...

Fibre Channel Adapter for I/O or TCP/IP? - ITtoolbox Groups

Which makes me wonder if the device is picky when there is no cabling.

Does the OS happily say that the card that the device is on is happy?
# 7  
Old 10-09-2007
How to solve the problem above? Or how can I delete the interface in proper way & create again?
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