[f-nsp] EdgeIron 4802CF POST: Switch Internal Loopback Test ... FAIL

[Chris Marlatt]

On 03/09/2011 04:40 AM, Raoul Bhatia [IPAX] wrote:
> hi,
>
> almost all of my EdgeIron 4802CF show:
>
>>   POST result:
>> UART Loopback Test......................PASS
>> Timer Test..............................PASS
>> DRAM Test ..............................PASS
>> I2C Initialization......................PASS
>> Runtime Image Check ....................PASS
>> PCI Device Check .......................PASS
>> Switch Driver Initialization............PASS
>> Switch Internal Loopback Test........... FAIL
>> ------------------- DONE --------------------
>
> even as it shows a failed status, the switch seems to work propoerly.
>
> can anyone please explain the meaning of the "Switch Internal Loopback
> Test"?
>
> thanks,
> raoul

This is a very common error with this switch, normally a cold reboot 
will fix the issue but I've yet to see it cause any real effect on the 
traffic passing through the device. I have however seen it disrupt ip 
based management to the device (i.e. telnet, snmp, etc). As for a 
detailed meaning of what that test is doing, I can't help you there.

Regards,

Chris Marlatt