RHEL 7 equal-cost multipath ECMP routing selection logic has changed

Solution Verified - Updated -

Issue

  • There has been a change in the path selection logic for multipath routes between RHEL 7.2 and RHEL 7.3.
  • Before RHEL 7.3, the path selection was per-packet
  • In RHEL 7.3, the path selection is per L3 hash
  • In RHEL 7.4, the path selection is per L3+L4 hash

Environment

  • Red Hat Enterprise Linux 7

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