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CLASS MAP QUEUEING -NEXUS 7000

Posted on 2013-12-30
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Last Modified: 2014-03-10
The Queuing Class map is configured within the default VDC when using the Nexus 7000.  The hardware capabilities of the interface cards is seen by issuing the command # show interface eth 1/1 capabilities.

F2-Test-18# sh int e 8/1 capabilities
Ethernet8/1
  Model:                 N7K-F132XP-15
  Type (SFP capable):    1000base-T
  Speed:                 1000,10000
  Duplex:                full
  Trunk encap. type:     802.1Q
  FabricPath capable:    yes
  Channel:               yes
  Broadcast suppression: percentage(0-100)
  Flowcontrol:           rx-(off/on/desired),tx-(off/on/desired)
  Rate mode:             dedicated
  Port mode:             Switched
  QOS scheduling:        rx-(8q4t),tx-(3p5q1t)
  CoS rewrite:           yes
  ToS rewrite:           yes
  SPAN:                  yes
  UDLD:                  yes
  MDIX:                  no
  TDR capable:           no
  Link Debounce:         yes
  Link Debounce Time:    yes


The queuing capabilities of the ports is seen as being QOS scheduling:        rx-(8q4t),tx-(3p5q1t)

Upon returning to the default admin context of the Nexus 7000 and issuing the command

IPTL-CISCO-NEXUS-7010-2(config)# class-map type queuing match-any ?
  1p3q1t-8e-out-pq1        Egress priority queue 1 of 1p3q1t8e type
  1p3q1t-8e-out-q-default  Egress default queue of 1p3q1t8e type
  1p3q1t-8e-out-q2         Egress queue 2 of 1p3q1t8e type
  1p3q1t-8e-out-q3         Egress queue 3 of 1p3q1t8e type
  1p3q4t-out-pq1           Egress priority queue of 1p3q4t type
  1p3q4t-out-q-default     Egress default queue of 1p3q4t type
  1p3q4t-out-q2            Egress queue 2 of 1p3q4t type
  1p3q4t-out-q3            Egress queue 3 of 1p3q4t type
  1p7q4t-out-pq1           Egress priority queue of 1p7q4t type
  1p7q4t-out-q-default     Egress default queue of 1p7q4t type
  1p7q4t-out-q2            Egress queue 2 of 1p7q4t type
  1p7q4t-out-q3            Egress queue 3 of 1p7q4t type
  1p7q4t-out-q4            Egress queue 4 of 1p7q4t type
  1p7q4t-out-q5            Egress queue 5 of 1p7q4t type
  1p7q4t-out-q6            Egress queue 6 of 1p7q4t type
  1p7q4t-out-q7            Egress queue 7 of 1p7q4t type
  2q4t-8e-in-q-default     Ingress default queue of 4q2t8e type
  2q4t-8e-in-q1            Ingress queue 1 of 4q2t8e type
  2q4t-in-q-default        Ingress default queue of 2q4t type
  2q4t-in-q1               Ingress queue 1 of 2q4t type
  8q2t-in-q-default        Ingress default queue of 8q2t type
  8q2t-in-q1               Ingress queue 1 of 8q2t type
  8q2t-in-q2               Ingress queue 2 of 8q2t type
  8q2t-in-q3               Ingress queue 3 of 8q2t type
  8q2t-in-q4               Ingress queue 4 of 8q2t type
  8q2t-in-q5               Ingress queue 5 of 8q2t type
  8q2t-in-q6               Ingress queue 6 of 8q2t type
  8q2t-in-q7               Ingress queue 7 of 8q2t type
  WORD                     Hierarchical class-map name (Max Size
                           40)


You can see that the options for (8q4t), and (3p5q1t)  DO NOT EXIST ????

Why are these interface queueing options missing.
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Question by:sectel
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Accepted Solution

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sectel earned 0 total points
ID: 39917386
Actually I was able to discuss this question with Cisco.

Apparently a template within the Admin-Context under Network-QoS will determine the number of Queues employed for both ingress and egress...effectively the entire damn configuration is for the most part determined by the template chosen.  

THIS IS VERY DIFFICULT TO ASCERTAIN FROM THE CISCO DOCUMENTATION,
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