Quoting John Hearns <hear...@googlemail.com>:
What does ibstatus give you
[hussaif1@lustwzb33 ~]$ ibstatus
Infiniband device 'mlx4_0' port 1 status:
default gid: fe80:0000:0000:0000:4a0f:cfff:fef5:b650
base lid: 0x0
sm lid: 0x0
state: 4: ACTIVE
phys state: 5: LinkUp
rate: 40 Gb/sec (4X QDR)
link_layer: Ethernet
Infiniband device 'mlx4_0' port 2 status:
default gid: fe80:0000:0000:0000:4a0f:cfff:fef5:b658
base lid: 0x0
sm lid: 0x0
state: 1: DOWN
phys state: 3: Disabled
rate: 40 Gb/sec (4X QDR)
link_layer: Ethernet
[hussaif1@lustwzb33 ~]$
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