[a-nsp] Weird L1 issue ...

[Bryan Holloway]

In case anyone cares:

1) bad switch port

2) carrier running FEC on one side, but not the other.

Sigh.


On 12/2/23 00:27, Bryan Holloway via arista-nsp wrote:
> Intriguing, but I don't see an option for that on the Arista.
> 
> I did figure out that the Mellanox FEC settings are set to "auto", for 
> whatever that's worth.
> 
> We have a TAC case open, so I guess we'll see.
> 
> 
> On 12/1/23 16:13, James Bensley wrote:
>> I had a very similar issue (with a different vendor); the circuit 
>> worked fine when connected to the old device, but not the new one (and 
>> I have good light levels, the provider saw no problems, we had the 
>> same FEC settings, etc).
>>
>> In the end I fixed it by connecting the circuit to the new device, 
>> which was set to LAN-PHY, toggling to WAN-PHY, then back to LAN-PHY, 
>> and it was fixed.
>>
>> It took several hours of trying random stuff to get that working.
>>
>> Cheers,
>> James.
>>