mlx5 IPoIB not working in connected mode


I am trying to have my hosts connected on my infiniband network with mlx5 cards in connected mode but IPoIB is not working.

CONNECTED MODE is mandatory in my environment.

I disabled IPoIB enhanced mode

options ib_ipoib ipoib_enhanced=0

in this way I configured ib0 as a connected mode IPoIB

ib0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 65520 qdisc pfifo_fast state UP group default qlen 256

link/infiniband 80:00:00:86:fe:80:00:00:00:00:00:00:50:6b:4b:03:00:42:e7:b4 brd 00:ff:ff:ff:ff:12:40:1b:ff:ff:00:00:00:00:00:00:ff:ff:ff:ff

inet brd scope global ib0

while ibping works, ping itself does not work and I Am not able to use the interfaces.

server 1:

server 2:

they cannot ping each other while they can ibping each other.

my systems are RHEL 7.5 3.10.0-862.11.6.el7.x86_64

here is the info of my mlx5 card.

how can I enable connected mode to work on these interfaces?

CA ‘mlx5_0’

CA type: MT4115

Number of ports: 1

Firmware version: 12.23.1020

Hardware version: 0

Node GUID: 0x506b4b030042e7b4

System image GUID: 0x506b4b030042e7b4

Port 1:

State: Active

Physical state: LinkUp

Rate: 100

Base lid: 3

LMC: 0

SM lid: 1

Capability mask: 0x2659e848

Port GUID: 0x506b4b030042e7b4

Link layer: InfiniBand

thank you

Hello Riccardo,

Thank you for posting your question on the Mellanox Community.

As you also opened a support case with use regarding this issue, we will continue to update you through the support case.

Thanks and regards,

~Mellanox Technical Support