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    show class-of-service

    Syntax

    show class-of-service

    Release Information

    Command introduced in Junos OS Release 9.0 for EX Series switches.

    EXP classifiers added in Junos OS Release 10.1 for EX Series switches.

    Description

    Display the class-of-service (CoS) information.

    Required Privilege Level

    view

    List of Sample Output

    show class-of- service
    show class-of-service rewrite-rule

    Output Fields

    Table 1 lists the output fields for the show class-of-service command. Output fields are listed in the approximate order in which they appear.

    Table 1: show class-of-service Output Fields

    Field Name

    Field Description

    Level of Output

    Forwarding class

    The forwarding class configuration:

    • Forwarding class—Name of the forwarding class.
    • ID—Forwarding class ID.
    • Queue—Queue number.
    • Fabric Priority—(EX8200 switches only) Fabric priority: either high or low. The fabric priority determines which CoS ingress queues packets are sent to.

    All levels

    Code point type

    The type of code-point alias:

    • dscp—Aliases for DiffServ code point (DSCP) values.
    • ieee–802.1—Aliases for IEEE 802.1p values.
    • inet-precedence—Aliases for IP precedence values.
    • exp—Aliases for experimental (EXP) values.

    All levels

    Alias

    Names given to CoS values.

    All levels

    Bit pattern

    Set of bits associated with an alias.

    All levels

    Classifier

    Name of the classifier.

    All levels

    Code point

    Code-point values.

    All levels

    Loss priority

    Loss priority assigned to specific CoS values and aliases of the classifier.

    All levels

    Rewrite rule

    Name of the rewrite-rule.

    All levels

    Drop profile

    Name of the drop profile.

    All levels

    Type

    Type of drop profile. EX Series switches support only the discrete type of drop profile.

    All levels

    Fill level

    Percentage of queue buffer fullness of high packets beyond which high packets are dropped.

    All levels

    Scheduler

    Name of the scheduler.

    All levels

    Transmit rate

    Transmission rate of the scheduler.

    All levels

    Buffer size

    Delay buffer size in the queue.

    All levels

    Drop profiles

    Drop profiles configured for the specified scheduler.

    All levels

    Protocol

    Transport protocol corresponding to the drop profile.

    All levels

    Name

    Name of the drop profile.

    All levels

    Queues supported

    Number of queues that can be configured on the interface.

    All levels

    Queues in use

    Number of queues currently configured.

    All levels

    Physical interface

    Name of the physical interface.

    All levels

    Scheduler map

    Name of the scheduler map.

    All levels

    Index

    Internal index of a specific object.

    All levels

    Sample Output

    show class-of- service

    user@switch> show class-of-service
    Forwarding class                       ID      Queue    
      best-effort                           0       0               
      expedited-forwarding                  1       5               
      assured-forwarding                    2       1               
      network-control                       3       7               
    
    Code point type: dscp
      Alias              Bit pattern
      af11               001010
      af12               001100
      ...                ...
    
    Code point type: ieee-802.1
      Alias              Bit pattern
      af11               010
      ...                ...
    
    Code point type: inet-precedence
      Alias              Bit pattern
      af11               001
      ...                ...      
    
    Classifier: dscp-default, Code point type: dscp, Index: 7
      Code point         Forwarding class                    Loss priority
      000000             best-effort                         low
      000001             best-effort                         low
      ...                ...                                 ...          
    
    Classifier: ieee8021p-default, Code point type: ieee-802.1, Index: 11
      Code point         Forwarding class                    Loss priority
      000                best-effort                         low
      001                best-effort                         low
      010                best-effort                         low
      011                best-effort                         low
      100                best-effort                         low
      101                best-effort                         low
      110                network-control                     low
      111                network-control                     low
    
    Classifier: ipprec-default, Code point type: inet-precedence, Index: 12
      Code point         Forwarding class                    Loss priority
      000                best-effort                         low
      001                best-effort                         low
      010                best-effort                         low
      011                best-effort                         low
      100                best-effort                         low
      101                best-effort                         low
      110                network-control                     low
      111                network-control                     low
    
    Classifier: ieee8021p-untrust, Code point type: ieee-802.1, Index: 16
      Code point         Forwarding class                    Loss priority
      000                best-effort                         low
      001                best-effort                         low
      010                best-effort                         low
      011                best-effort                         low
      100                best-effort                         low
      101                best-effort                         low
      110                best-effort                         low
      111                best-effort                         low
    
    Rewrite rule: dscp-default, Code point type: dscp, Index: 27
      Forwarding class                    Loss priority       Code point
      best-effort                         low                 000000
      best-effort                         high                000000
      expedited-forwarding                low                 101110
      expedited-forwarding                high                101110
      assured-forwarding                  low                 001010
      assured-forwarding                  high                001100
      network-control                     low                 110000
      network-control                     high                111000
    
    Rewrite rule: ieee8021p-default, Code point type: ieee-802.1, Index: 30
      Forwarding class                    Loss priority       Code point
      best-effort                         low                 000
      best-effort                         high                001
      expedited-forwarding                low                 100
      expedited-forwarding                high                101
      assured-forwarding                  low                 010
      assured-forwarding                  high                011
      network-control                     low                 110
      network-control                     high                111
    
    Rewrite rule: ipprec-default, Code point type: inet-precedence, Index: 31
      Forwarding class                    Loss priority       Code point
      best-effort                         low                 000
      best-effort                         high                000
      expedited-forwarding                low                 101
      expedited-forwarding                high                101
      assured-forwarding                  low                 001
      assured-forwarding                  high                001
      network-control                     low                 110
      network-control                     high                111
    
    Drop profile:<default-drop-profile>, Type: discrete, Index: 1
      Fill level    
             100
    
    Scheduler map: <default>, Index: 2
    
      Scheduler: <default-be>, Forwarding class: best-effort, Index: 20
        Transmit rate: 95 percent, Rate Limit: none, Buffer size: 95 percent,
        Priority: low
        Drop profiles:
          Loss priority   Protocol    Index    Name
          High            non-TCP         1    <default-drop-profile>
          High            TCP             1    <default-drop-profile>
    
      Scheduler: <default-nc>, Forwarding class: network-control, Index: 22
        Transmit rate: 5 percent, Rate Limit: none, Buffer size: 5 percent,
        Priority: low
        Drop profiles:
          Loss priority   Protocol    Index    Name
          High            non-TCP         1    <default-drop-profile>
          High            TCP             1    <default-drop-profile>
    
    Physical interface: ge-0/0/0, Index: 129
    Queues supported: 8, Queues in use: 4
      Scheduler map: <default>, Index: 2
    
    Physical interface: ge-0/0/1, Index: 130
    Queues supported: 8, Queues in use: 4
      Scheduler map: <default>, Index: 2
    
    ...             ...              ...
    
    Fabric priority: low 
      Scheduler: <default-fabric>, Index: 23
        Drop profiles:
          Loss priority   Protocol    Index    Name
          High            non-TCP         1    <default-drop-profile>
          High            TCP             1    <default-drop-profile>
       
    Fabric priority: high
      Scheduler: <default-fabric>, Index: 23
        Drop profiles:
          Loss priority   Protocol    Index    Name
          High            non-TCP         1    <default-drop-profile>
          High            TCP             1    <default-drop-profile>
    

    show class-of-service rewrite-rule

    user@switch> show class-of-service rewrite-rule


    Rewrite rule: dscp-default, Code point type: dscp, Index: 31 Forwarding class Loss priority Code point best-effort low 000000 best-effort high 000000 expedited-forwarding low 101110 expedited-forwarding high 101110 fw-class low 001010 fw-class high 001100 network-control low 110000 network-control high 111000 Rewrite rule: exp-default, Code point type: exp, Index: 33 Forwarding class Loss priority Code point best-effort low 000 best-effort high 001 expedited-forwarding low 010 expedited-forwarding high 011 fw-class low 100 fw-class high 101 network-control low 110 network-control high 111 Rewrite rule: ieee8021p-default, Code point type: ieee-802.1, Index: 34 Forwarding class Loss priority Code point best-effort low 000 best-effort high 001 expedited-forwarding low 010 expedited-forwarding high 011 fw-class low 100 fw-class high 101 network-control low 110 network-control high 111 Rewrite rule: ipprec-default, Code point type: inet-precedence, Index: 35 Forwarding class Loss priority Code point best-effort low 000 best-effort high 000 expedited-forwarding low 101 expedited-forwarding high 101 fw-class low 001 fw-class high 001 network-control low 110 network-control high 111

    Published: 2012-12-06