The slave NIC is treated as down when bonding device fails over

Solution Unverified - Updated -

Issue

  • The slave NIC is treated as down for few seconds when bonding device fails over.

  • This problem is observed intermittently.

    Aug 24 18:46:51 <kern.err> csdl3-k-m kernel: nx_nic[eth8]: NIC Link is up ###<---eth8 is up. 
    Aug 24 18:46:56 <kern.info> csdl3-k-m kernel: bonding: bond0: link status definitely up for interface eth8.
    Aug 24 18:47:03 <kern.err> csdl3-k-m kernel: nx_nic[eth4]: NIC Link is down
    Aug 24 18:47:08 <kern.info> csdl3-k-m kernel: bonding: bond0: link status definitely down for interface eth4, disabling it
    Aug 24 18:47:08 <kern.info> csdl3-k-m kernel: bonding: bond0: making interface eth8 the new active one.
    Aug 24 18:47:08 <kern.info> csdl3-k-m kernel: bonding: bond0: link status definitely down for interface eth8, disabling it
    Aug 24 18:47:08 <kern.info> csdl3-k-m kernel: bonding: bond0: now running without any active interface !
    Aug 24 18:47:11 <kern.info> csdl3-k-m kernel: bonding: bond0: link status definitely up for interface eth8.
    Aug 24 18:47:11 <kern.info> csdl3-k-m kernel: bonding: bond0: making interface eth8 the new active one.
    Aug 24 18:47:11 <kern.info> csdl3-k-m kernel: bonding: bond0: first active interface up!
    

Environment

  • kernel-2.6.18-238.19.1.ELsmp
  • RHEL5 or 6
  • bonding

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