Example: Configuring Per-Unit Scheduling for Subscriber Access

In this example, a network administrator sets up a subscriber access configuration with per-unit scheduling.

1. The administrator configures the static VLAN interfaces and enables per-unit scheduling for the interfaces.

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       interfaces {
       ge-1/1/0 {
           per-unit-scheduler;
           vlan-tagging;
           unit 100 {
               vlan-id 100;
               family inet {
                   unnumbered-address lo0.0 preferred-source-address 192.0.2.100;
               }
           }
           unit 200 {
               vlan-id 200;
               family inet {
                   unnumbered-address lo0.0 preferred-source-address 192.0.2.100;
               }
           }
       }
       ge-1/1/1 {
           per-unit-scheduler;
           vlan-tagging;
           unit 100 {
               vlan-id 100;
               family inet {
                   unnumbered-address lo0.0 preferred-source-address 192.0.2.100;
               }
           }
           unit 200 {
               vlan-id 200;
               family inet {
                   unnumbered-address lo0.0 preferred-source-address 192.0.2.100;
               }
           }
       }
       ge-1/0/1 {
           unit 0 {
               family inet {
                   address 203.0.113.31/24;
               }
           }
       }
       ge-1/1/2 {
           description "wfce14 eth1 soso ge-1/1/2";
           vlan-tagging;
           gigether-options {
               no-auto-negotiation;
           }
           unit 100 {
               vlan-id 100;
               family inet {
                   address 203.0.113.121/24;
               }
           }
       }
   }
   

2. The administrator configures static CoS parameters, including forwarding classes and classifiers, to be referenced in the dynamic profiles.

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       class-of-service {
       classifiers {
           inet-precedence 8q-inet {
               forwarding-class be {
                   loss-priority low code-points 000;
               }
               forwarding-class ef {
                   loss-priority low code-points 001;
               }
               forwarding-class af {
                   loss-priority low code-points 010;
               }
               forwarding-class nc {
                   loss-priority low code-points 011;
               }
               forwarding-class voice {
                   loss-priority low code-points 100;
               }
               forwarding-class video {
                   loss-priority low code-points 101;
               }
               forwarding-class game {
                   loss-priority low code-points 110;
               }
               forwarding-class data {
                   loss-priority low code-points 111;
               }
           }
           inet-precedence 4q-inet {
               forwarding-class be {
                   loss-priority low code-points [ 000 001 ];
               }
               forwarding-class ef {
                   loss-priority low code-points [ 010 011 ];
               }
               forwarding-class af {
                   loss-priority low code-points [ 100 101 ];
               }
               forwarding-class nc {
                   loss-priority low code-points [ 110 111 ];
               }
           }
           inet-precedence 8q-drop-inet {
               forwarding-class be {
                   loss-priority low code-points 000;
               }
               forwarding-class ef {
                   loss-priority medium-low code-points 001;
               }
               forwarding-class af {
                   loss-priority medium-high code-points 010;
               }
               forwarding-class nc {
                   loss-priority high code-points 011;
               }
               forwarding-class voice {
                   loss-priority low code-points 100;
               }
               forwarding-class video {
                   loss-priority medium-low code-points 101;
               }
               forwarding-class game {
                   loss-priority medium-high code-points 110;
               }
               forwarding-class data {
                   loss-priority high code-points 111;
               }
           }
           inet-precedence 4q-drop-inet {
               forwarding-class be {
                   loss-priority low code-points [ 000 001 ];
               }
               forwarding-class ef {
                   loss-priority medium-low code-points [ 010 011 ];
               }
               forwarding-class af {
                   loss-priority medium-high code-points [ 100 101 ];
               }
               forwarding-class nc {
                   loss-priority high code-points [ 110 111 ];
               }
           }
           
       }
       drop-profiles {
           d0 {
               fill-level 25 drop-probability 100;
               fill-level 0 drop-probability 0;
           }
           d1 {
               fill-level 50 drop-probability 100;
               fill-level 0 drop-probability 0;
           }
           d2 {
               fill-level 75 drop-probability 100;
               fill-level 0 drop-probability 0;
           }
           d3 {
               fill-level 100 drop-probability 100;
               fill-level 0 drop-probability 0;
           }
           all {
               fill-level 0 drop-probability 0;
               fill-level 100 drop-probability 100;
           }
       }
       forwarding-classes {
           queue 0 be;
           queue 1 ef;
           queue 2 af;
           queue 3 nc;
           queue 4 voice;
           queue 5 video;
           queue 6 game;
           queue 7 data;
       }
       
       interfaces {
           ge-1/0/1 {
               unit 0 {
                   classifiers {
                       inet-precedence 8q-drop-low-high-inet;
                   }
               }
           }
       }
       traceoptions {
           flag all;
           flag asynch;
           flag route-socket;
       }
   }
   

3. The administrator configures the access and service dynamic profiles to receive CoS parameters for the subscriber interfaces through RADIUS.

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       dynamic-profiles {
       subscriber {
           interfaces {
               "$junos-interface-ifd-name" {
                   unit "$junos-underlying-interface-unit" {
                       family inet;
                   }
               }
           }
           class-of-service {
               traffic-control-profiles {
                   zero {
                       scheduler-map "$junos-cos-scheduler-map";
                       shaping-rate "$junos-cos-shaping-rate";
                       guaranteed-rate "$junos-cos-guaranteed-rate";
                       delay-buffer-rate "$junos-cos-delay-buffer-rate";
                   }
               }
               interfaces {
                   "$junos-interface-ifd-name" {
                       unit "$junos-underlying-interface-unit" {
                           output-traffic-control-profile zero;
                       }
                   }
               }
               scheduler-maps {
                   be_smap {
                       forwarding-class be scheduler be_sch;
                   }
                   all_smap {
                       forwarding-class be scheduler be_sch;
                       forwarding-class ef scheduler ef_sch;
                       forwarding-class af scheduler af_sch;
                       forwarding-class nc scheduler nc_sch;
                       forwarding-class video scheduler video_sch;
                       forwarding-class data scheduler data_sch;
                   }
                   be_ef_smap {
                       forwarding-class be scheduler be_sch;
                       forwarding-class ef scheduler ef_sch;
                   }
                   af_smap {
                       forwarding-class af scheduler af_sch;
                   }
                   be_ef_af_nc_smap {
                       forwarding-class be scheduler be_sch;
                       forwarding-class ef scheduler ef_sch;
                       forwarding-class af scheduler af_sch;
                       forwarding-class nc scheduler nc_sch;
                   }
                   voice_video_game_data_smap {
                       forwarding-class voice scheduler voice_sch;
                       forwarding-class video scheduler video_sch;
                       forwarding-class game scheduler game_sch;
                       forwarding-class data scheduler data_sch;
                   }
               }
               schedulers {
                   "$junos-cos-scheduler" {
                       transmit-rate percent "$junos-cos-scheduler-tx";
                       buffer-size percent "$junos-cos-scheduler-bs";
                       priority "$junos-cos-scheduler-pri";
                       drop-profile-map loss-priority low protocol any drop-profile "$junos-cos-scheduler-dropfile-low";
                       drop-profile-map loss-priority medium-low protocol any drop-profile "$junos-cos-scheduler-dropfile-medium-low";
                       drop-profile-map loss-priority medium-high protocol any drop-profile "$junos-cos-scheduler-dropfile-medium-high";
                       drop-profile-map loss-priority high protocol any drop-profile "$junos-cos-scheduler-dropfile-high";
                   }
               }
           }
       }
       service {
           variables {
               fc_1 default-value be;
               sch_1 default-value be_sch;
               sch-tx_1 default-value 20000000;
               sch-bs_1 default-value 10;
               sch-pri_1 default-value high;
               sch-drop-low_1 default-value d3;
               sch-drop-med-low_1 default-value d2;
               sch-drop-med-high_1 default-value d1;
               sch-drop-high_1 default-value d0;
               sch-drop-any_1 default-value d3;
               fc_2 default-value af;
               sch_2 default-value af_sch;
               sch-tx_2 default-value 10;
               sch-bs_2 default-value 10;
               sch-pri_2 default-value high;
               sch-drop-low_2 default-value d3;
               sch-drop-med-low_2 default-value d2;
               sch-drop-med-high_2 default-value d1;
               sch-drop-high_2 default-value d0;
               sch-drop-any_2 default-value d3;
               fc_3 default-value voice;
               sch_3 default-value voice_sch;
               sch-tx_3 default-value 20000000;
               sch-bs_3 default-value 10;
               sch-pri_3 default-value high;
               sch-drop-low_3 default-value d3;
               sch-drop-med-low_3 default-value d2;
               sch-drop-med-high_3 default-value d1;
               sch-drop-high_3 default-value d0;
               sch-drop-any_3 default-value d3;
               fc_4 default-value game;
               sch_4 default-value game_sch;
               sch-tx_4 default-value 10;
               sch-bs_4 default-value 10;
               sch-pri_4 default-value high;
               sch-drop-low_4 default-value d3;
               sch-drop-med-low_4 default-value d2;
               sch-drop-med-high_4 default-value d1;
               sch-drop-high_4 default-value d0;
               sch-drop-any_4 default-value d3;
               scheduler-map default-value all_smap;
           }
           class-of-service {
               scheduler-maps {
                   "$scheduler-map" {
                       forwarding-class "$fc_1" scheduler "$sch_1";
                       forwarding-class "$fc_2" scheduler "$sch_2";
                       forwarding-class "$fc_3" scheduler "$sch_3";
                       forwarding-class "$fc_4" scheduler "$sch_4";
                   }
               }
               schedulers {
                   "$sch_1" {
                       transmit-rate "$sch-tx_1";
                       buffer-size percent "$sch-bs_1";
                       priority "$sch-pri_1";
                       drop-profile-map loss-priority low protocol any drop-profile "$sch-drop-low_1";
                       drop-profile-map loss-priority medium-low protocol any drop-profile "$sch-drop-med-low_1";
                       drop-profile-map loss-priority medium-high protocol any drop-profile "$sch-drop-med-high_1";
                       drop-profile-map loss-priority high protocol any drop-profile "$sch-drop-high_1";
                   }
                   "$sch_2" {
                       transmit-rate percent "$sch-tx_2";
                       buffer-size percent "$sch-bs_2";
                       priority "$sch-pri_2";
                       drop-profile-map loss-priority low protocol any drop-profile "$sch-drop-low_2";
                       drop-profile-map loss-priority medium-low protocol any drop-profile "$sch-drop-med-low_2";
                       drop-profile-map loss-priority medium-high protocol any drop-profile "$sch-drop-med-high_2";
                       drop-profile-map loss-priority high protocol any drop-profile "$sch-drop-high_2";
                   }
                   "$sch_3" {
                       transmit-rate "$sch-tx_3";
                       buffer-size percent "$sch-bs_3";
                       priority "$sch-pri_3";
                       drop-profile-map loss-priority low protocol any drop-profile "$sch-drop-low_3";
                       drop-profile-map loss-priority medium-low protocol any drop-profile "$sch-drop-med-low_3";
                       drop-profile-map loss-priority medium-high protocol any drop-profile "$sch-drop-med-high_3";
                       drop-profile-map loss-priority high protocol any drop-profile "$sch-drop-high_3";
                   }
                   "$sch_4" {
                       transmit-rate percent "$sch-tx_4";
                       buffer-size percent "$sch-bs_4";
                       priority "$sch-pri_4";
                       drop-profile-map loss-priority low protocol any drop-profile "$sch-drop-low_4";
                       drop-profile-map loss-priority medium-low protocol any drop-profile "$sch-drop-med-low_4";
                       drop-profile-map loss-priority medium-high protocol any drop-profile "$sch-drop-med-high_4";
                       drop-profile-map loss-priority high protocol any drop-profile "$sch-drop-high_4";
                   }
               }
           }
       }
       service_2 {
           variables {
               fc_1 default-value be;
               sch_1 default-value be_sch;
               sch-tx_1 default-value 10;
               sch-bs_1 default-value 10;
               sch-pri_1 default-value high;
               sch-drop-low_1 default-value d3;
               sch-drop-med-low_1 default-value d2;
               sch-drop-med-high_1 default-value d1;
               sch-drop-high_1 default-value d0;
               sch-drop-any_1 default-value d3;
               scheduler-map default-value all_smap;
           }
           class-of-service {
               scheduler-maps {
                   "$scheduler-map" {
                       forwarding-class "$fc_1" scheduler "$sch_1";
                   }
               }
               schedulers {
                   "$sch_1" {
                       transmit-rate percent "$sch-tx_1";
                       buffer-size percent "$sch-bs_1";
                       priority "$sch-pri_1";
                       drop-profile-map loss-priority low protocol any drop-profile "$sch-drop-low_1";
                       drop-profile-map loss-priority medium-low protocol any drop-profile "$sch-drop-med-low_1";
                       drop-profile-map loss-priority medium-high protocol any drop-profile "$sch-drop-med-high_1";
                       drop-profile-map loss-priority high protocol any drop-profile "$sch-drop-high_1";
                   }
               }
           }
       }
   }
   

4. The network administrator configures DHCP and RADIUS to grant access and services to the interfaces referenced by the subscriber dynamic profile.

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       forwarding-options {
       dhcp-relay {
           traceoptions {
               file size 1g;
               flag all;
           }
           dynamic-profile subscriber aggregate-clients replace;
           server-group {
               subscriber-server {
                   203.0.113.2;
               }
           }
           active-server-group subscriber-server;
           group relay-0 {
               authentication {
                   password $ABC123;
                   username-include {
                       user-prefix user0;
                       mac-address;
                   }
               }
               interface ge-1/1/0.100;
               interface ge-1/1/0.200;
           }
       }
   }
   radius-server {
       198.51.100.11 secret "$ABC123$ABC123$ABC123"; ## SECRET-DATA
   }
       profile subscriber-profile {
           authentication-order radius;
           radius {
               authentication-server 198.51.100.11;
               accounting-server 198.51.100.11;
           }
           radius-server {
               198.51.100.11 secret "$ABC123$ABC123"; ## SECRET-DATA
           }
           accounting {
               order radius;
               statistics time;
           }
       }