Issue

• Bonding over IPoIB (IP over InfiniBand) reporting incorrect speed and duplex
• There are two IB interfaces on the RHEL6 server ib0 and ib1. Each interface is QDR 4x10Gb speed.
• OS reports two different speeds, which is right:

# cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.6.0 (September 26, 2009)

Bonding Mode: fault-tolerance (active-backup) (fail_over_mac active)
Primary Slave: ib0 (primary_reselect always)
Currently Active Slave: ib0
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0

Slave Interface: ib0
MII Status: up
Speed: 100 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 80:00:00:aa:aa:aa
Slave queue ID: 0

Slave Interface: ib1
MII Status: down
Speed: 100 Mbps
Duplex: full
Link Failure Count: 1
Permanent HW addr: 80:00:00:bb:bb:bb
Slave queue ID: 0

From mii-tool:

bond1: 10 Mbit, half duplex, link ok