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Table of Contents Expand all

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Syntax
Description
Options
Required Privilege Level
Output Fields
Sample Output
Release Information

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show class-of-service

date_range 31-May-24

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Syntax

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show class-of-service

Description

Display the entire class-of-service (CoS) configuration, including system-chosen defaults. Executing this command is equivalent to executing all show class-of-service commands in succession.

Options

This command has no options.

Required Privilege Level

view

Output Fields

Table 1 lists all possible output fields for the show class-of-service command. The output fields that appear can vary depending on the platform, software release, and operating system (Junos OS or Junos OS Evolved).

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.	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. `exp`—Aliases for MPLS 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 if one has been configured.	All levels
`Drop profile`	Name of the drop profile.	All levels
`Type`	Type of drop profile.	All levels
`Fill level`	Percentage of queue buffer fullness in a drop profile at which packets begin to drop during periods of congestion.	All levels
`Scheduler map`	Name of the scheduler map.	All levels
`Scheduler`	Name of the scheduler.	All levels
`Transmit rate`	Transmission rate of the scheduler.	All levels
`Excess rate`	Percentage of excess bandwidth traffic to share.	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
`Congestion-notification`	Enabled if a congestion notification profile is applied to the interface; disabled if no congestion notification profile is applied to the interface.	All levels
`Forwarding class set`	Name of the forwarding class set (priority group). Note: Only on systems that support enhanced transmission selection (ETS) hierarchical port scheduling.
`Index`	Internal index of an object.	All levels

Sample Output

show class-of-service

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user@host> show class-of-service
Forwarding class                       ID      Queue  Restricted queue  Fabric priority  Policing priority   SPU priority
  best-effort                           0       0          0             low                normal            low
  expedited-forwarding                  1       1          1             low                normal            low
  assured-forwarding                    2       2          2             low                normal            low
  network-control                       3       3          3             low                normal            low

Code point type: dscp
  Alias              Bit pattern
  af11               001010         
  af12               001100         
  af13               001110         
...
Code point type: dscp-ipv6
  Alias              Bit pattern
  af11               001010         
  af12               001100         
  af13               001110         
...
Code point type: exp
  Alias              Bit pattern
  af11               100            
  af12               101            
  be                 000            
...
Code point type: ieee-802.1
  Alias              Bit pattern
  af11               100            
  af12               101            
  be                 000            
...
Code point type: inet-precedence
  Alias              Bit pattern
  af11               001
  af21               010
  af31               011
...
Code point type: ieee-802.1ad
  Alias              Bit pattern
  af11               1000
  af11-dei           1001
  af12               1010
...
Code point type: inet6-precedence
  Alias              Bit pattern
  af11               001
  af21               010
  af31               011
...
Classifier: dscp-default, Code point type: dscp, Index: 6
  Code point         Forwarding class                    Loss priority
  000000             best-effort                         low         
  000001             best-effort                         low         
  000010             best-effort                         low         
....
Classifier: dscp-ipv6-default, Code point type: dscp-ipv6, Index: 7
  Code point         Forwarding class                    Loss priority
  000000             best-effort                         low         
  000001             best-effort                         low         
  000010             best-effort                         low         
...
Loss-priority-map: frame-relay-de-default, Code point type: frame-relay-de, Index: 12
  Code point         Loss priority
  0                  low         
  1                  high        

Rewrite rule: dscp-default, Code point type: dscp, Index: 23
  Forwarding class                    Loss priority       Code point
  best-effort                         low                 000000         
  best-effort                         high                000000         
  expedited-forwarding                low                 101110         
...
Rewrite rule: dscp-ipv6-default, Code point type: dscp-ipv6, Index: 24
  Forwarding class                    Loss priority       Code point
  best-effort                         low                 000000         
  best-effort                         high                000000         
...
....
Drop profile: <default-drop-profile>, Type: discrete, Index: 1
  Fill level    Drop probability
         100                 100

Scheduler map: <default>, Index: 2

  Scheduler: <default-be>, Forwarding class: best-effort, Index: 16
    Transmit rate: 95 percent, Rate Limit: none, Buffer size: 95 percent, Priority: low
    Drop profiles:
      Loss priority   Protocol    Index    Name
      Low             any             1    <default-drop-profile>      
      Medium low      any             1    <default-drop-profile>            
      Medium high     any             1    <default-drop-profile>      
      High            any             1    <default-drop-profile>            
...
Fabric priority: low
  Scheduler: <default-fabric>, Index: 24
    Drop profiles:
      Loss priority   Protocol    Index    Name
      Low             non-TCP         1    <default-drop-profile>
      Low             TCP             1    <default-drop-profile>
      High            non-TCP         1    <default-drop-profile>
      High            TCP             1    <default-drop-profile>

Fabric priority: high
  Scheduler: <default-fabric>, Index: 24
    Drop profiles:
      Loss priority   Protocol    Index    Name
      Low             non-TCP         1    <default-drop-profile>
      Low             TCP             1    <default-drop-profile>
      High            non-TCP         1    <default-drop-profile>
      High            TCP             1    <default-drop-profile>

Physical interface: fe-0/0/0, Index: 137
Queues supported: 8, Queues in use: 4
  Scheduler map: <default>, Index: 2

  Logical interface: fe-0/0/0.0, Index: 69
    Object            Name                   Type                    Index
    Adaptive-shaper   fr-shaper                                      35320
    Classifier        ipprec-compatibility   ip                         11
                    
Physical interface: fe-0/0/1, Index: 138
Queues supported: 8, Queues in use: 4
  Scheduler map: <default>, Index: 2
...

Release Information

Command introduced before Junos OS Release 7.4.

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