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Cisco Bug: CSCvt29099 - [PLT-ICUPS]:Multi protocol flows are not optimized by CUTO

Last Modified

Oct 07, 2020

Products (2)

  • Cisco ASR 5000 Series
  • Cisco ASR 5500

Known Affected Releases 21.20.5 21.21.0

Description (partial)

CUTO's 3-tuple flow was made of src address, dst address and L3 protocol (IP4 or IP6), though it should have been src address, dst address and L4 protocol (TCP/UDP).

if TCP and UDP streams are between same set of src and dst addresses, whichever stream is created first will become CUTO flow. The later created stream will not trigger a new CUTO flow and it will just become part of the previous flow.

This issue is seen when TCP and UDP streams are created between same set of src and dst addresses.
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