Resilient hashing limitations

Resilient hashing has the following limitations:

  • Resilient hashing supports uniform traffic distribution only until one of the link fails and another link takes up the traffic. It does not guarantee uniform distribution of traffic across all members of a LAG since it depends on the flow set table in the hardware and the traffic pattern.
  • It is applicable to unicast traffic only.
  • In a stacking system, symmetric hashing does not work on resilient hashing LAGs. This is a hardware limitation since the resilient hashing flow set table is programmed differently on each of the stack units.