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Cisco Bug: CSCuq86032 - N5k - Same "match cos" value shared between class-fcoe and another class

Last Modified

Sep 10, 2019

Products (5)

  • Cisco Nexus 5000 Series Switches
  • Cisco Nexus 5548P Switch
  • Cisco Nexus 5596UP Switch
  • Cisco Nexus 5548UP Switch
  • Cisco Nexus 5596T Switch

Known Affected Releases

5.2(1)N1(6)

Description (partial)

Symptom:
QOS policies might not download upon reload if same COS value is matched
between class-fcoe and any other class. Following error message might be
observed upon reload:
%IPQOSMGR-4-QOSMGR_PPF_WARNING: PPF library warning: Ses ff0101d930000002
Database download error 0x41ee005f type 1 from client id 0x40000290 uid 656 vdc
0 slot 1 node 1 for nodes .

Conditions:
Under certain mis-configuration the parser does not reject configuration and
QOS policies are also applied real time. By default class-fcoe matches to COS 3
and similar match of COS value is not rejected.
Example:
class-map type qos class-fcoe
class-map type qos match-any signalling-global
  match cos 3
  match dscp 24,26

#show policy-map system
  Service-policy (qos) input:   classify-5548-global
    policy statistics status:   disabled
    Class-map (qos):   class-fcoe (match-any)
      Match: cos 3 >>>>> by default
      set qos-group 1

    Class-map (qos):   signalling-global (match-any)
      Match: cos 3 >>> explicitly configured
      Match: dscp 24,26
      set qos-group 3

Ideally parser should reject configuration and give such a warning:
ERROR: Unable to perform the action due to incompatiblity:  Module 1returned
status "same 'match cos' value can not be shared by class-fcoe and another class"
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Bug Details Include

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  • Status
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