RHEL 5/6 bonding does not show non-standard speeds.

Solution Unverified - Updated -

Issue

  • 10Gbps bandwidth split into multiple speed like 2.5 Gbps, 4Gbps etc

  • /proc/net/bonding/bondX does not show this speed, it can only report as 100Mbps or 1000Mbps

    [root@server ~]# cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.4.0-1 (October 7, 2008)

Bonding Mode: fault-tolerance (active-backup)
Primary Slave: None
Currently Active Slave: eth2
MII Status: up
MII Polling Interval (ms): 0
Up Delay (ms): 0
Down Delay (ms): 0

Slave Interface: eth2
MII Status: up
Speed: 100 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 00:17:a4:77:08:44

Slave Interface: eth6
MII Status: up
Speed: 100 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 00:17:a4:77:08:4c

Environment

  • Red Hat Enterprise Linux 5 prior to 5.8
  • Red Hat Enterprise Linux 6 prior to 6.2
  • 10G bandwidth split into sub-multiples and enslaved into a bond

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