Junos OS

Model: mx480
Junos: 15.1F6.9

MPC-3D-16XGE-SFPP

I use these below configuration limit queue 1 bandwidth no more than 1m, but failed. anyone help me figure out the problem thanks so much

set interfaces ae1 per-unit-scheduler
set interfaces ae1 flexible-vlan-tagging

set class-of-service forwarding-classes class fc_CN queue-num 1
set class-of-service forwarding-classes class fc_CN priority low
set class-of-service traffic-control-profiles tcp-10m scheduler-map sm-10m
set class-of-service traffic-control-profiles tcp-10m shaping-rate 10m
set class-of-service scheduler-maps sm-10m forwarding-class fc_CN scheduler 10m
set class-of-service schedulers 10m shaping-rate 1m
set class-of-service schedulers 10m shaping-rate burst-size 150k
set class-of-service schedulers 10m buffer-size temporal 5

set class-of-service interfaces ae1 unit 2374 output-traffic-control-profile tcp-10m

Hello Xinhui,

I believe you should configure shaping for fc_CN in a bit different way:

delete class-of-service schedulers 10m
set class-of-service schedulers 10m transmit-rate 1m exact

Please try it and let us know the results.

The following article contains a very good overview of Juniper class of service:

https://www.saidvandeklundert.nl/qos.php

Best regards,
Sergii
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Hi xinhui,

output-traffic-control-profile feature is not supported on MPC-3D-16XGE-SFPP,  it requires specific HW. 

Quote:

• Enhanced Queuing DPC, MIC, and MPC interfaces on MX Series routers

Thanks,

Alex

I believe it's a doc error - output-traffic-control-profile is mentioned in Scaling of Per-VLAN Queuing on Non-Queuing MPCs:

"To enable logical interface scheduling, you include the per-unit-scheduler statement at the [edit interfaces interface name] hierarchy level. When per-unit schedulers are enabled, you can define dedicated schedulers for logical interfaces by including the scheduler-map statement at the [edit class-of-service interfaces interface name unit logical unit number] hierarchy level. Alternatively, you can include the scheduler-map statement at the [edit class-of-service traffic-control-profiles traffic control profile name] hierarchy level and then include the output-traffic-control-profile statement at the [edit class-of-service interfaces interface name unit logical unit number] hierarchy level."

Best regards,
Sergii
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Hi, I enable it, but it doesn't work. any ideas?

set interfaces ae1 per-unit-scheduler

so, actually it's documented error https://www.juniper.net/documentation/en_US/junos/topics/concept/cos-scaling-of-per-vlan-queuing-on-non-queuing-mpcs.html , it's not supported?

Hi Xinhui,

Can you please try the following configuration and let us know if bandwidth for fc_CN is limited to 1m or not:

set interfaces ae1 per-unit-scheduler
set interfaces ae1 flexible-vlan-tagging

set class-of-service forwarding-classes class fc_CN queue-num 1
set class-of-service forwarding-classes class fc_CN priority low
set class-of-service traffic-control-profiles tcp-10m scheduler-map sm-10m
set class-of-service traffic-control-profiles tcp-10m shaping-rate 10m
set class-of-service scheduler-maps sm-10m forwarding-class fc_CN scheduler 10m
set class-of-service schedulers 10m transmit-rate 1m exact

set class-of-service interfaces ae1 unit 2374 output-traffic-control-profile tcp-10m

Best regards,
Sergii
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Please accept the solution if your problem is resolved
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I use these configurations, use iperf testing unfortunately, it does not work. queue 1 bandwidth more than 10m.

iperf testing result below

- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams
[ 4] 0.00-100.00 sec 179 MBytes 15.0 Mbits/sec 0.081 ms 0/22866 (0%)
[ 4] Sent 22866 datagrams

# run show configuration class-of-service
forwarding-classes {
class fc_CN queue-num 1 priority low;
}
traffic-control-profiles {
tcp-10m {
scheduler-map sm-10m;
shaping-rate 10m;
}
}
interfaces {
ae1 {
unit 2374 {
output-traffic-control-profile tcp-10m;
}
}
}
scheduler-maps {
sm-10m {
forwarding-class fc_CN scheduler 10m;
}
}
schedulers {
10m {
transmit-rate {
1m;
exact;
}
}
}

run show interfaces queue ae1.2374
Logical interface ae1.2374 (Index 594) (SNMP ifIndex 6618)
Description: 00-HKSRV2374
Flags: Up SNMP-Traps 0x4000 VLAN-Tag [ 0x8100.2374 ] Encapsulation: ENET2
Statistics Packets pps Bytes bps
Bundle:
Input : 37766953 4 2274559423 4152
Output: 166306107 1376 231777486719 15244832
Adaptive Statistics:
Adaptive Adjusts: 0
Adaptive Scans : 0
Adaptive Updates: 0
Forwarding classes: 16 supported, 4 in use
Egress queues: 8 supported, 4 in use
Burst size: 0
Queue: 0, Forwarding classes: best-effort
Queued:
Packets : 8272530915 4516 pps
Bytes : 4033876175797 28134912 bps
Transmitted:
Packets : 8272530915 4516 pps
Bytes : 4033876175797 28134912 bps
Tail-dropped packets : 0 0 pps
RL-dropped packets : 0 0 pps
RL-dropped bytes : 0 0 bps
RED-dropped packets : 0 0 pps
Low : 0 0 pps
Medium-low : 0 0 pps
Medium-high : 0 0 pps
High : 0 0 pps
RED-dropped bytes : 0 0 bps
Low : 0 0 bps
Medium-low : 0 0 bps
Medium-high : 0 0 bps
High : 0 0 bps
Queue: 1, Forwarding classes: fc_CN
Queued:
Packets : 2790158556 3967 pps
Bytes : 1243854600894 27112704 bps
Transmitted:
Packets : 2790117466 3967 pps
Bytes : 1243811699411 27112704 bps

I don't see any issues with your configuration - it should work. Policer should definitely work - can you please check:

delete class-of-service schedulers 10m transmit-rate 1m exact
set class-of-service schedulers 10m transmit-rate 1m rate-limit

Best regards,
Sergii
-------------------------------------------------------------------
Please accept the solution if your problem is resolved
-------------------------------------------------------------------

thanks for an answer.it doesn't work either. I have not any idea, that's the problem.

set class-of-service forwarding-classes class fc_CN queue-num 1
set class-of-service forwarding-classes class fc_CN priority low
set class-of-service traffic-control-profiles tcp-10m scheduler-map sm-10m
set class-of-service traffic-control-profiles tcp-10m shaping-rate 10m
set class-of-service interfaces ae1 unit 2374 output-traffic-control-profile tcp-10m
set class-of-service scheduler-maps sm-10m forwarding-class fc_CN scheduler 10m
set class-of-service schedulers 10m transmit-rate 1m
set class-of-service schedulers 10m transmit-rate rate-limit

run show interfaces queue ae1.2374
Logical interface ae1.2374 (Index 594) (SNMP ifIndex 6618)
Description: 00-HKSRV2374
Flags: Up SNMP-Traps 0x4000 VLAN-Tag [ 0x8100.2374 ] Encapsulation: ENET2
Statistics Packets pps Bytes bps
Bundle:
Input : 37830591 1 2282082485 1136
Output: 166817375 1375 232334458842 15242584
Adaptive Statistics:
Adaptive Adjusts: 0
Adaptive Scans : 0
Adaptive Updates: 0
Forwarding classes: 16 supported, 4 in use
Egress queues: 8 supported, 4 in use
Burst size: 0
Queue: 0, Forwarding classes: best-effort
Queued:
Packets : 8419177259 2953 pps
Bytes : 4143823689563 15752448 bps
Transmitted:
Packets : 8419177259 2953 pps
Bytes : 4143823689563 15752448 bps
Tail-dropped packets : 0 0 pps
RL-dropped packets : 0 0 pps
RL-dropped bytes : 0 0 bps
RED-dropped packets : 0 0 pps
Low : 0 0 pps
Medium-low : 0 0 pps
Medium-high : 0 0 pps
High : 0 0 pps
RED-dropped bytes : 0 0 bps
Low : 0 0 bps
Medium-low : 0 0 bps
Medium-high : 0 0 bps
High : 0 0 bps
Queue: 1, Forwarding classes: fc_CN
Queued:
Packets : 2872677444 3524 pps
Bytes : 1277347661707 24923264 bps
Transmitted:
Packets : 2872636354 3524 pps
Bytes : 1277304760224 24923264 bps

Hello Xinhui,

For me both configurations work:

user@mx> show version | match os:
Junos: 15.1F6.9

user@mx> show chassis hardware models | match "FPC 11"
FPC 11           REV 51   750-062581   CAKG8606          MPC-3D-16XGE-SFPP

user@mx> show configuration interfaces ae1 | display set
set interfaces ae1 per-unit-scheduler
set interfaces ae1 flexible-vlan-tagging
set interfaces ae1 unit 2777 vlan-id 77
set interfaces ae1 unit 2777 family inet address 10.77.1.1/24

set class-of-service scheduler-maps sm-10m forwarding-class FC_BEST_EFFORT scheduler 10m
set class-of-service traffic-control-profiles tcp-10m scheduler-map sm-10m
set class-of-service traffic-control-profiles tcp-10m shaping-rate 10m
set class-of-service interfaces ae1 unit 2777 output-traffic-control-profile tcp-10m
set class-of-service schedulers 10m transmit-rate 1m
set class-of-service schedulers 10m transmit-rate rate-limit

user@mx> show interfaces queue ae1.2777
  Logical interface ae1.2777 (Index 358) (SNMP ifIndex 785)
    Flags: Up SNMP-Traps 0x4000 VLAN-Tag [ 0x8100.77 ]  Encapsulation: ENET2
    Statistics        Packets        pps         Bytes          bps
    Bundle:
        Input :      19546810      74996    9343374762    286787952
        Output:      17700137        237    8531465162       917720
    Adaptive Statistics:
        Adaptive Adjusts:          0
        Adaptive Scans  :          0
        Adaptive Updates:          0
Forwarding classes: 16 supported, 6 in use
Egress queues: 8 supported, 6 in use
Burst size: 0
Queue: 0, Forwarding classes: FC_BEST_EFFORT
  Queued:
    Packets              :              17700141                   239 pps
    Bytes                :            9274873430               1003904 bps
  Transmitted:
    Packets              :              17700141                   239 pps
    Bytes                :            9274873430               1003904 bps
    Tail-dropped packets :                     0                     0 pps
    RL-dropped packets   :               1899065                 74761 pps
    RL-dropped bytes     :             957128760             301436928 bps
    RED-dropped packets  :                     0                     0 pps
     Low                 :                     0                     0 pps
     Medium-low          :                     0                     0 pps
     Medium-high         :                     0                     0 pps
     High                :                     0                     0 pps
    RED-dropped bytes    :                     0                     0 bps
     Low                 :                     0                     0 bps
     Medium-low          :                     0                     0 bps
     Medium-high         :                     0                     0 bps
     High                :                     0                     0 bps

And

set class-of-service scheduler-maps sm-10m forwarding-class FC_BEST_EFFORT scheduler 10m
set class-of-service traffic-control-profiles tcp-10m scheduler-map sm-10m
set class-of-service traffic-control-profiles tcp-10m shaping-rate 10m
set class-of-service interfaces ae1 unit 2777 output-traffic-control-profile tcp-10m
set class-of-service schedulers 10m shaping-rate 1m

user@mx> show interfaces queue ae1.2777
  Logical interface ae1.2777 (Index 358) (SNMP ifIndex 785)
    Flags: Up SNMP-Traps 0x4000 VLAN-Tag [ 0x8100.77 ]  Encapsulation: ENET2
    Statistics        Packets        pps         Bytes          bps
    Bundle:
        Input :      36796810      74998   17588874762    286795744
        Output:      21106820        237   10173486368       917720
    Adaptive Statistics:
        Adaptive Adjusts:          0
        Adaptive Scans  :          0
        Adaptive Updates:          0
Forwarding classes: 16 supported, 6 in use
Egress queues: 8 supported, 6 in use
Burst size: 0
Queue: 0, Forwarding classes: FC_BEST_EFFORT
  Queued:
    Packets              :              22370128                 75001 pps
    Bytes                :           11721946618             314406144 bps
  Transmitted:
    Packets              :              21106826                   238 pps
    Bytes                :           11059976370                997632 bps
    Tail-dropped packets :                   991                     0 pps
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    RED-dropped packets  :               1262311                 74763 pps
     Low                 :               1262311                 74763 pps
     Medium-low          :                     0                     0 pps
     Medium-high         :                     0                     0 pps
     High                :                     0                     0 pps
    RED-dropped bytes    :             661450964             313408512 bps
     Low                 :             661450964             313408512 bps
     Medium-low          :                     0                     0 bps
     Medium-high         :                     0                     0 bps
     High                :                     0                     0 bps

Can you please provide the following outputs:

user@mx> show class-of-service scheduler-hierarchy interface ae1.2777
Interface/                    Shaping Guarnteed  Guaranteed/   Queue   Excess
Resource name                    rate      rate       Excess  weight   weight
                                kbits     kbits     priority          high/low
  xe-11/0/0.2777                10000     10000                         62   62
    FC_BEST_EFFORT               1000      1000     Low  Low     125

user@mx> show class-of-service scheduler-map sm-10m
Scheduler map: sm-10m, Index: 41643

  Scheduler: 10m, Forwarding class: FC_BEST_EFFORT, Index: 49773
    Transmit rate: unspecified, Rate Limit: none, Buffer size: remainder, Buffer Limit: none, Priority: low
    Excess Priority: unspecified
    Shaping rate: 1000000 bps
    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>

Best regards,
Sergii
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Please accept the solution if your problem is resolved
-------------------------------------------------------------------

OK, thanks very much. I think maybe I set hierarchical-scheduler in the interface before. makes now setting not work. maybe I need reboot the FPC to resolved this issue. there is service with the router. I can't reboot for testing it.