ConnectX-5 chaining open ring

Infrastructure & Networking Adapters and Cables
1

Hello,

I have six nodes connected by MT27800. I have configured devices to chaining mode by command:

mlxconfig -d /dev/mst/mst_device set HOST_CHAINING_MODE=1 .

It works fine when the ring is closed. If I remove one connection on purpose, I would expect it will be still working, but the connection fall apart.

Is it correct behaviour or do I have something wrong on my side?

Cheers,

Jiri

2

Hi,

Removing ports physically breaks the ring, and we are discussed this behavior internally to see how to improve it in next releases.

Currently, if you down your interface (ifconfig <> down), even on the two ports of your server, the ring must continue to work.

Br,

Marc