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Cisco Bug: CSCvj14664 - BFD CoS markings are not preserved from its DSCP

Last Modified

Feb 18, 2019

Products (12)

  • Cisco Nexus 6000 Series Switches
  • Cisco Nexus 5548P Switch
  • Cisco Nexus 5596UP Switch
  • Cisco Nexus 5624Q Switch
  • Cisco Nexus 6004 Switch
  • Cisco Nexus 6001 Switch
  • Cisco Nexus 5672UP Switch
  • Cisco Nexus 5548UP Switch
  • Cisco Nexus 56128P Switch
  • Cisco Nexus 5696Q Switch
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Known Affected Releases

7.1(3)N1(1) 7.3(2)N1(1)

Description (partial)

BFD traffic egresses the N6k with CoS 0 despite being marked for DSCP CS6. This can result in the traffic getting dropped in the default queue within the transit network during times of congestion (assuming transit network is trusting CoS marking only),

BFD feature enabled on N6k. CoS 0 tagging will occur regardless of enabled interface type.
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