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Class-of-Service Configuration Statement Hierarchy

To configure CoS, use the following statements at the [edit class-of-service] hierarchy level.
Shared JUNOS statements in the class-of-service hierarchy are shown in normal font and are documented in the JUNOS Class of Service Configuration Guide.


class-of-service {


adaptive-shapers {


             
               adaptive-shaper-name        
     {
trigger  
             type              shaping-rate
(percent                percent              |                rate             );
}


}




classifiers {


             
               type                   
                     classifier-name              {


forwarding-class                  class-name                              {
loss-priority (low | high)
code-points [                 alias                |                  bits               ];
}


import ( 
             classifier-name              | default);
}


}




code-point-aliases {


(dscp | dscp-ipv6 | exp
| ieee-802.1 | inet-precedence) {
             
               alias-name              
                          bits             ;
}


}




drop-profiles {


             
               profile-name              {
fill-level                percentage              drop-probability                percentage        
    ;


interpolate {
drop-probability                  value               ;
fill-level                  value               ;
}


}


}




forwarding-classes {
queue   
          queue-number                 
                 class-name  
         priority (low | high);
}




forwarding-policy {


class   
            class-name              {


classification-override
{
forwarding-class                  class-name               ;
}


}




next-hop-map                map-name              {


forwarding-class                  class-name                              {
lsp-next-hop [                 lsp-regular-expression    
          ];
next-hop [                 next-hop-name             
 ];
non-lsp-next-hop [                 lsp-regular-expression               ];
}


}


}




fragmentation-maps {         



             
               map-name               
          {           



forwarding-class                  class-name                {
drop-timeout                  milliseconds               ;
fragment-threshold                  bytes           
   ;
multilink-class                  number               ;
no-fragmentation;
}


}


}




host-outbound-traffic {
dscp-code-point              value           ;
forwarding-class              class-name           ;
}




           
interfaces {         



             
                            interface-name                          {           

input-scheduler-map                            map-name                          ;           

input-shaping-rate                            rate                          ;           

             
scheduler-map                             map-name                          ;           

             
scheduler-map-chassis                       
     map-name                          ;           

             
shaping-rate                rate             ;


               
unit                                 logical-unit-number                            
  {             

               
adaptive-shaper                             
   adaptive-shaper-name                
             ;             



                 
classifiers {               

                 
(dscp | dscp-ipv6 | exp | ieee-802.1 | inet-precedence)
                 
                                      
              (                                    classifier-name         
                         | default);    
          

}


               
forwarding-class                            
    class-name                         
    ;             

fragmentation-map                  map-name        
      ;
input-schedular-map                                map-name                              ;             

input-shaping-rate (percent                         
       percentage                      
        |                     
           rate                        
     );             

               
input-traffic-control-profile                                 profiler-name             
                 shared-instance        
                        instance-name                              ;        
    



                 
loss-priority-maps {
default;
                 
                   map-name                 ;
}


               
output-traffic-control-profile                                 profile-name              
                shared-instance         
                       instance-name                              ;        
    



                 
rewrite-rules {               

                 
dscp (                                    rewrite-name                                   | default);               

                 
dscp-ipv6 (                                 
  rewrite-name                         
         | default);               

                 
exp (                                    rewrite-name                                   | default) protocol                                     protocol-types          
                       ;               

                 
frame-relay-de (                            
       rewrite-name                    
              | default);               

                 
ieee-802.1 (                                
   rewrite-name                        
          | default) vlan-tag (outer | outer-and-inner);               

                 
ieee-802.1ad (                              
     rewrite-name                      
            | default) vlan-tag (outer | outer-and-inner);               

                 
inet-precedence (                           
        rewrite-name                   
               | default);               

}


scheduler-map                  map-name               ;
shaping-rate                  rate                 
            ;             

               
virtual-channel-group                  group-name                              ;             

}


}


}




loss-priority-maps {


frame-relay-de (               map-name              |
default) {
loss-priority                level              code-points
[               values       
     ];
}


}




           
rewrite-rules {         



             
                            type rewrite-name              {           



               
forwarding-class                            
    class-name                         
     {             

               
loss-priority                               
 level                               code-point [                 aliases               ] [        
        6-bit-patterns               ];             

}


             
import (                            rewrite-name                           | default);           

}


}




scheduler-maps {


             
               map-name              {
forwarding-class                class-name              scheduler                scheduler-name    
        ;
}


}




schedulers {


             
               scheduler-name              {
buffer-size (percent                percentage        
     | remainder | temporal                microseconds             );


drop-profile-map {
loss-priority (any | high | low | medium-high | medium-low);
protocol (any | non-tcp
| tcp);
}


priority (high | low | medium-high | medium-low | strict-high);
shaping-rate (percent                percent           
 age |                rate             );
transmit-rate (percent                percentage        
     |                rate              | remainder) <exact | rate-limit>;
}


}




traceoptions {


flag    
           flag              {
all;
asynch;
hardware-database;
init;
parse;
process;
restart;
route-socket;
show;
snmp;
util;
}


}




traffic-control-profiles              profile-name        
   {
delay-buffer-rate (percent              percent            |              rate        
  );
guaranteed-rate (percent              percent            |              rate        
  );
scheduler-map              map-name           ;
shaping-rate (percent              percent            |              rate        
  );
}




virtual-channel-groups {


             
               virtual-channel-group-name  
           {


               
                 virtual-channel-name      
         {
default;
scheduler-map                  map-name               ;
shaping-rate (percent                  percent         
      |                  rate               );
}


}


}




virtual-channels {
           
             virtual-channel-name           ;
}


}
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