RARE user and assistance email list

[Frédéric LOUI <>]

Did you try to remove configuration from P4lang stanza and sdn interface and 
tried to add it again ?
Instead of plug/unplug ?

It sounds like this is a physical BSP problem.

Unfortunately we did not experience such problem on our case …
Can you drop QSFP info ? Also this can be related to Mellanox OFED driver.

We configured some 100GE port with CERN with Mellanox XConnect5 ofed driver 
and it worked flawlessly.

Is it the only port at 100GE ? Do you have additional servers ? 

In CHICAGO we have LEONI DAC cable with 100GE port and I set AUTONEG to ON.
(Otherwise the link does not come up)
Can you please try the following line ?

export-port sdn20 28 100 0 2 0

The problem is that we are also using LEONI DAC but as they are using a 
specific P4 switch the BSP is not working correctly.
(No info at all from bf_platform)

Maybe @Alex or @Jordi can share their experience as they have 100GE ports 
connected to Mellanox XCOnnect5 ? 
Unfortunately in my case I usually dealt with 10GE ports.

All in all, please to to enable autoneg and please let me know if this change 
something ...

All the best,
Frederic

> Le 5 janv. 2022 à 16:44, Marcos Felipe Schwarz <> a 
> écrit :
> 
> Dear all,
>  
> I’m having problems on my Wedge running RARE-OS.
> Everytime I reboot the port sdn20 comes dropping packets and with maximum 
> MTU 8190 (ping -M do -s 8162). To solve the issue I need to phisically 
> disconnect the cable and reconnect it. If I reboot again, the problem 
> reapear.
> Has any of you had a similar problem?
>  
> Port sdn20 (export-port sdn20 28 100 0 1 0) is configured with MTU 9000 and 
> conected through a Leoni DAC cable to a Mellanox ConnectX5. I’ve tried 
> changing the DAC cable from EdgeCore, and the problem persists.
> I have limited availability to the equipment, so I’d like to get some ideas 
> and commands to help troubleshoot the issue.
> This Friday I’ll be able to continue the tests, and I intend to:
>       • Change the connection to a different port and verify if this is an 
> port issue
>       • Set up logging and compare port information before and after the 
> problem
>       • Any other ideas that you guys can help me with to either 
> troubleshoot or mitigate the problem
>  
> Regards,
>  
> Marcos Schwarz
>  
> Gerente de P&D | R&D Manager
> Gerência de Execução de P&D em Ciberinfraestrutura | Management of R&D 
> Execution in Cyberinfrastructure
> Diretoria de Pesquisa e Desenvolvimento | Board of Research and Development
> RNP - Rede Nacional de Ensino e Pesquisa | Brazilian National Research and 
> Educational Network
> Promovendo o uso inovador de redes avançadas | Promoting the innovative use 
> of advanced networks
> http://www.rnp.br | +55 (19) 3787- 3386 | Skype ID: marcos.f.sch
> Campinas - SP - Brasil | E-mail: 
>  
> <RIO0001.txt>