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Cisco Bug: CSCuj87667 - The copy from MPLS exp bits to IP tos is done without the left shift

Last Modified

Apr 18, 2019

Products (16)

  • Cisco IOS
  • Cisco ASR 901-6CZ-F-D Router
  • Cisco ME 3600X-24TS-M Switch
  • Cisco ASR 901-4C-FT-D Router
  • Cisco ASR 901S-4SG-F-D Router
  • Cisco ASR 901-6CZ-F-A Router
  • Cisco ASR 901S-2SG-F-D Router
  • Cisco ASR 901-6CZ-FT-A Router
  • Cisco ASR 901-12C-FT-D Router
  • Cisco ME 3600X-24CX-M Switch
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Known Affected Releases

15.4(1)S 15.4(1.1)T

Description (partial)

Symptom: When value "xxx" of MPLS exp bits was copied to outer IP/GRE header TOS, the new TOS value should be "xxx00000" but now it's "00000xxx", so that the QoS information was broken.
Conditions: This symptom is observed in MPLS over GRE case.
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