close

keyboard_arrow_left

Table of Contents Expand all

list Table of Contents

English

Hierarchical Class of Service in ACX Series Routers

date_range 16-Dec-24

Scheduling properties can be applied at physical as well as logical interface and logical interface set levels. Service providers can support hierarchical class of service (HCoS) at multiple levels to meet the service level agreements and bandwidth allocations for subscribers.

Hierarchical Scheduling on the Physical Interface

By default, the queuing mode on all the physical interfaces in ACX routers that support HCoS is 4 queues per physical interface (port). In the hierarchical scheduler mode, you can configure up to 3 levels (physical interface, logical interface, and queues) or 4 levels (including logical interfaces sets) of scheduling, depending on the platform.

You can enable hierarchical scheduling by including the hierarchical-scheduler CLI command under the [edit interfaces interface-name] hierarchy:

content_copy zoom_out_map
[edit]
interfaces xe-0/0/1 {
    hierarchical-scheduler;
}

Note:

If you change the physical interface queuing mode from default to hierarchical scheduler mode or vice-versa, the traffic flowing out of the physical interface during the mode change results in a transient loss of traffic data.

Traffic Control Profiles

Traffic control profiles hold parameters for levels above the queue level of the scheduler hierarchy. You configure the scheduling and shaping on the scheduler nodes using traffic control profiles and scheduler maps for the queue level. The traffic control profile defines the following characteristics of a scheduler node:

Scheduler-map
Shaping rate
Guaranteed rate

You attach traffic control profiles at the physical interface, logical interface set, and logical interface level. You define scheduling and shaping characteristics for the scheduler node using shaping-rate and guaranteed-rate. The following is a sample traffic control profile configuration:

content_copy zoom_out_map
[edit class-of-service traffic-control-profiles]
tcp-500m-shaping-rate {
    shaping-rate 500m;
}
tcp-vlan0 {
    shaping-rate 200m;
    guaranteed-rate 100m;
    scheduler-map tcp-map-vlan0; # Applies scheduler maps to customer VLANs.
}
tcp-vlan1 {
    shaping-rate 100m;
    guaranteed-rate 40m;
    scheduler-map tcp-map-vlan1; # Applies scheduler maps to customer VLANs.
}

Schedulers

A scheduler defines scheduling and queuing characteristics of a queue and holds the information about the queues, the last level of the hierarchy. The following is a sample scheduler configuration:

content_copy zoom_out_map
[edit class-of-service schedulers]
sched-vlan0-q0 {
    priority low;
    transmit-rate 20m;
    buffer-size temporal 100ms;
    drop-profile loss-priority low dp-low;
    drop-profile loss-priority high dp-high;
}
sched-vlanl-q1 {
    priority strict-high;
    shaping-rate 20m;
}

Note:

We do not support transmit-rate with priority queues on ACX Series routers.

Deep Buffer Control

With deep buffer control, also known as fine-grained buffer control, you can configure buffers on a per-queue basis.

On ACX routers running Junos OS Evolved, by default all queues on HQoS enabled logical interfaces have a dedicated buffer of 4KB and a shared buffer of 10msec. Table 1 and Table 2 show the guaranteed and shared per queue default buffers on ACX routers running Junos OS Evolved.

Table 1: Guaranteed Buffer per Queue on HCoS-enabled Physical Ports
Interface Speed (GB)	Minimum Guaranteed Buffer (KB)
1/10	125
25/40/50	625
100	1250
200	2500
400	5000

Table 2: Shared Buffer per Queue on HCoS-enabled Physical Ports
Interface Speed (GB)	Shared buffer size (MB)	Shared buffer size (ms)
1	5	40
10	50	40
25	250	80
40	250	50
50	250	40
100	500	40
200	500	20
400	500	10

You can configure the shared and guaranteed buffers for each queue on HCoS-enabled ports and logical interfaces. See buffer-size (Schedulers).

Note:

Use the temporal option to configure shared buffers.

Drop Profiles

Drop profiles allow you to specify queue specific behavior to drop packets based on WRED profile under congestion. The following is a sample drop profile configuration:

content_copy zoom_out_map
[edit class-of-service drop-profiles]
dp-low {
    fill-level 80 drop-probability 0;
    fill-level 100 drop-probability 100;
}
dp-high {
    fill-level 60 drop-probability 0;
    fill-level 80 drop-probability 100;
}

Scheduler Maps

A scheduler map is referenced by traffic control profiles to define queues. The scheduler map establishes the number of queues over a scheduler node, associating a forwarding-class with a scheduler. The following is a sample scheduler map configuration:

content_copy zoom_out_map
[edit class-of-service scheduler-maps]
tcp-map-vlan0 {
    forwarding-class voice scheduler sched-vlan0-q0;
    forwarding-class video scheduler sched-vlan0-q1;
    forwarding-class data scheduler sched-vlan0-q2;
}
tcp-map-vlan1 {
    forwarding-class voice scheduler sched-vlan1-q0;
    forwarding-class video scheduler sched-vlan1-q1;
    forwarding-class data scheduler sched-vlan1-q2;
}

Applying the Traffic Control Profiles

You can attach output-traffic-control-profile and output-traffic-control-profile-remaining at various levels of the scheduler hierarchy to achieve hierarchical class of service. On an interface set, output-traffic-control-profile-remaining is active if there is at least one member logical interface with an attached output-traffic-control-profile and at least one without.

Note:

Although a shaping rate can be applied directly to the physical interface, hierarchical schedulers must use a traffic control profile to hold this parameter.

All logical interfaces that are part of an interface set inherit the traffic control profile of the interface set.

The following is a sample configuration to apply traffic control profiles:

content_copy zoom_out_map
[edit class-of-service interfaces]
ge-1/0/0 {
    output-traffic-control-profile tcp-500m-shaping-rate;
    output-traffic-control-profile-remaining  tcp-500m-shaping-rate;
    unit 0 {
        output-traffic-control-profile tcp-cvlan0;
    }
    unit 1 {
        output-traffic-control-profile tcp-cvlan1;
    }
}
interface-set svlan0 {
    output-traffic-control-profile tcp-svlan0;
}
interface-set svlan1 {
    output-traffic-control-profile tcp-svlan1;
}

HCoS on Aggregated Ethernet Interfaces

Configuring HCoS on aggregated Ethernet (AE) interfaces is exactly the same as configuring HCoS on physical interfaces. Apply all HCoS configuration to the AE interface.

Note:

You cannot apply HCoS configuration to a physical interface that is a member of an AE interface. To apply HCoS to an AE interface, do not configure HCoS on a physical interface and then add the physical interface to the AE interface. First configure the AE interface, then configure HCoS on the AE interface.

HCoS configuration on an AE interface is automatically applied to each member interface. How the system applies the configuration to each member interfaces (that is, whether the configuration is normalized or not) depends on the AE interface configuration mode:

Link protection mode — system applies configuration directly to each member interface without normalization.
Non-link protection replica mode — system applies configuration directly to each member interface without normalization.
Non-link protection scale mode (default mode) — system does normalize the configuraiton before applying to each member interface.

HCoS configuration has the following requirements when the configuration must be normalized across member interfaces:

transmit-rate at scheduler/queue level — both percent and absolute configuration allowed
shaping-rate at scheduler/queue level — both percent and absolute configuration allowed
guaranteed-rate at traffic control profile level — only absolute configuration allowed
shaping-rate at traffic control profile level — only absolute configuration allowed
shaping-rate at port level — only absolute configuration allowed

If the configuration must be normalized, rates configured as a percent require no normalization. If the configuration must be normalized, rates configured as absolute must be normalized. You can calculated the normalized value for each interface by deviding the absolute configured value by the number of member interfaces in the AE interface.

Subscriber Services

Supported ACX routers support hierarchical class of service functionality for subscriber services such as Layer 3 VPN, Layer 2 VPN, Ethernet pseudowire (VPWS), and VPLS for logical interface instance on the AC (Access Port).

Note:

Hierarchical class of service is not supported for Layer 2 bridging (bridge domain VLAN) service.

The following sections explain the hierarchical class of service configuration for subscriber services:

Configuring hierarchical class of service for Layer 3 VPN Service
Configuring hierarchical class of service for Layer 2 VPN (Ethernet Pseudowires) Service
Configuring hierarchical class of service for VPLS Service
Verifying the hierarchical class of service configurations

Configuring hierarchical class of service for Layer 3 VPN Service

Supported ACX routers can be configured to provide Layer 3 VPN services to subscribers by connecting the UNI port to a CE device. The physical port can be configured to provide Layer 3 VPN services to multiple subscribers. You can schedule traffic for different Layer 3 VPN instances based on the SLA parameters agreed with the subscriber.

The following is a sample UNI and NNI logical interface configuration on the PE router providing the Layer 3 VPN service:

content_copy zoom_out_map
[edit interfaces]
xe-0/0/1 {
    description “NNI IFL”;
    unit 0 {
        family inet {
            address 100.1.1.1/24;
        }
        family mpls;
    }
}
ge-0/0/1 {
    description “UNI IFL”;
    hierarchical-scheduler;
    flexible-vlan-tagging;
    unit 0 {
        vlan-id 100;
        family inet {
            address 20.20.0.1/24;
        }
    }
    unit 1 {
        vlan-id 101;
        family inet {
            address 20.20.1.1/24;
        }
    }
    unit 2 {
        vlan-id 2;
        family inet {
            address 20.20.2.1/24;
        }
    }
    unit 3 {
        vlan-id 3;
        family inet {
            address 20.20.3.1/24;
        }
    }
    unit 4 {
        vlan-id 4;
        family inet {
            address 20.20.4.1/24;
        }
    }
    ...
}

Scheduling can be enabled on the interfaces to achieve hierarchical class of service support for traffic flowing from NNI towards UNI direction.

Configuring hierarchical class of service for Layer 2 VPN (Ethernet Pseudowires) Service

Supported ACX routers can be configured to provide Layer 2 VPN services to subscribers based on Ethernet pseudowires where the UNI port is connected to a CE device. The physical port can be configured to provide Layer 2 VPN services to multiple subscribers. You can schedule traffic for different pseudowires based on the SLA parameters agreed with the subscriber. Hierarchical class of service can be enabled per UNI logical interface represented as the attachment point of the Ethernet pseudowire to achieve the functionality.

The following is a sample to configure the UNI logical interface on the PE router providing the Layer 2 VPN service based on Ethernet pseudowire:

content_copy zoom_out_map
[edit interfaces]
ge-0/0/1 {
    hierarchical-scheduler;
    vlan-tagging;
    unit 0 {
        encapsulation vlan-ccc;
        vlan-id 0;
    }
    unit 1 {
        encapsulation vlan-ccc;
        vlan-id 1;
    }
    unit 2 {
        encapsulation vlan-ccc;
        vlan-id 2;
    }
    unit 3 {
        encapsulation vlan-ccc;
        vlan-id 3;
    }
    unit 4 {
        encapsulation vlan-ccc;
        vlan-id 4;
    }
}

You can enable scheduling on the interfaces to achieve hierarchical class of service for traffic flowing from NNI towards UNI direction.

Configuring hierarchical class of service for VPLS Service

Supported ACX routers can be configured to provide Layer 2 VPN services to subscribers based on VPLS where the UNI port can be connected to a CE device. Subscriber network is attached to UNI logical interface at the PE router and have a VPLS instance. The same physical port can service multiple VPLS instances for various subscribers. The service provider can schedule traffic for different VPLS instances based on the SLA parameters agreed with the subscriber. You can enable hierarchical class of service per UNI logical interface representing the VPLS instance for the subscriber to achieve the functionality.

The following is a sample to configure the UNI logical interface on the PE router providing the VPLS service:

content_copy zoom_out_map
[edit interfaces]
ge-0/0/1 {
    hierarchical-scheduler;
    vlan-tagging;
    encapsulation vlan-vpls;
    unit 0 {
        encapsulation vlan-vpls;
        vlan-id 0;
    }
    unit 1 {
        encapsulation vlan-vpls;
        vlan-id 1;
    }
    unit 2 {
        encapsulation vlan-vpls;
        vlan-id 2;
    }
    unit 3 {
        encapsulation vlan-vpls;
        vlan-id 3;
    }
    unit 4 {
        encapsulation vlan-vpls;
        vlan-id 4;
    }
}

Scheduling can be enabled on the interfaces to achieve hierarchical class of service for the traffic flowing from NNI towards UNI direction.

Verifying the hierarchical class of service configurations

You can use the following CLI commands to verify the configuration:

show interfaces queue—Shows physical interface aggregate, physical interface remaining, and logical interface traffic statistics to monitor the traffic received and transmitted. The following are some sample outputs of show interfaces queue CLI command:

content_copy zoom_out_map
user@host# run show interfaces queue ge-0/0/4.2  
  Logical interface ge-0/0/4.2 (Index 555) (SNMP ifIndex 671)
Forwarding classes: 16 supported, 8 in use
Egress queues: 8 supported, 8 in use
Burst size: 0
Queue: 0, Forwarding classes: 8q0
  Queued:
    Packets              :               1121476                  7642 pps
    Bytes                :             587885024              32237416 bps
  Transmitted:
    Packets              :                594964                  3160 pps
    Bytes                :             304621568              12946280 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:                526512                  4482 pps
    Total-dropped bytes  :             283263456              19291136 bps
  Queue Buffer Usage:
    Reserved buffer      :                0 pkts                     0 bytes
    Shared buffer        :                0 pkts                     0 bytes
Queue: 1, Forwarding classes: 8q1
  Queued:
    Packets              :               1121476                  7642 pps
    Bytes                :             587885154              32237416 bps
  Transmitted:
    Packets              :                594959                  3160 pps
    Bytes                :             304619008              12946280 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:                526517                  4482 pps
    Total-dropped bytes  :             283266146              19291136 bps
  Queue Buffer Usage:
    Reserved buffer      :                0 pkts                     0 bytes
    Shared buffer        :                0 pkts                     0 bytes
Queue: 2, Forwarding classes: 8q2
  Queued:
    Packets              :               1119456                  7321 pps
    Bytes                :             595127702              31122568 bps
  Transmitted:
    Packets              :                274601                  1500 pps
    Bytes                :             140595712               6144000 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:                844855                  5821 pps
    Total-dropped bytes  :             454531990              24978568 bps
  Queue Buffer Usage:
    Reserved buffer      :                0 pkts                     0 bytes
    Shared buffer        :                0 pkts                     0 bytes
Queue: 3, Forwarding classes: 8q3
  Queued:
    Packets              :               1119464                  7303 pps
    Bytes                :             595131980              31122568 bps
  Transmitted:
    Packets              :                274602                  1500 pps
    Bytes                :             140596224               6144000 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:                844862                  5803 pps
    Total-dropped bytes  :             454535756              24978568 bps
  Queue Buffer Usage:
    Reserved buffer      :                0 pkts                     0 bytes
    Shared buffer        :                0 pkts                     0 bytes
Queue: 4, Forwarding classes: 8q4
  Queued:
    Packets              :               1121476                  7642 pps
    Bytes                :             587885024              32237416 bps
  Transmitted:
    Packets              :                594964                  3160 pps
    Bytes                :             304621568              12946280 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:                526512                  4482 pps
    Total-dropped bytes  :             283263456              19291136 bps
  Queue Buffer Usage:
    Reserved buffer      :                0 pkts                     0 bytes
    Shared buffer        :                0 pkts                     0 bytes
Queue: 5, Forwarding classes: 8q5
  Queued:
    Packets              :               1121476                  7660 pps
    Bytes                :             587885024              32310560 bps
  Transmitted:
    Packets              :                594964                  3178 pps
    Bytes                :             304621568              13019424 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:                526512                  4482 pps
    Total-dropped bytes  :             283263456              19291136 bps
  Queue Buffer Usage:
    Reserved buffer      :                0 pkts                     0 bytes
    Shared buffer        :                0 pkts                     0 bytes
Queue: 6, Forwarding classes: 8q6
  Queued:
    Packets              :               1121476                  7017 pps
    Bytes                :             587190842              29535136 bps
  Transmitted:
    Packets              :                621684                  3589 pps
    Bytes                :             318302208              14701712 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:                499792                  3428 pps
    Total-dropped bytes  :             268888634              14833424 bps
  Queue Buffer Usage:
    Reserved buffer      :                0 pkts                     0 bytes
    Shared buffer        :                0 pkts                     0 bytes
Queue: 7, Forwarding classes: 8q7
  Queued:
    Packets              :               1121477                  6481 pps
    Bytes                :             586036910              27137704 bps
  Transmitted:
    Packets              :                666066                  3660 pps
    Bytes                :             341025792              14994280 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:                455411                  2821 pps
    Total-dropped bytes  :             245011118              12143424 bps
  Queue Buffer Usage:
    Reserved buffer      :                0 pkts                     0 bytes
    Shared buffer        :                0 pkts                     0 bytes

content_copy zoom_out_map
user@host# run show interfaces queue ge-0/0/4 aggregate    
Physical interface: ge-0/0/4, Enabled, Physical link is Up
  Interface index: 648, SNMP ifIndex: 1763
  Description:  UNI side - connected to ixia 6/9 
Forwarding classes: 16 supported, 8 in use
Egress queues: 8 supported, 8 in use
Queue: 0, Forwarding classes: 8q0
  Queued:
    Packets              :              16762731                 33205 pps
    Bytes                :            8738362264             139058280 bps
  Transmitted:
    Packets              :               8779233                 13724 pps
    Bytes                :            4494967296              56220880 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:               7983498                 19481 pps
    Total-dropped bytes  :            4243394968              82837400 bps
  Queue Buffer Usage:
    Reserved buffer      :               32 pkts                  6656 bytes
    Shared buffer        :               52 pkts                 10816 bytes
Queue: 1, Forwarding classes: 8q1
  Queued:
    Packets              :              16762732                 33237 pps
    Bytes                :            8738359966             139190408 bps
  Transmitted:
    Packets              :               8779363                 13756 pps
    Bytes                :            4495033856              56353008 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:               7983369                 19481 pps
    Total-dropped bytes  :            4243326110              82837400 bps
  Queue Buffer Usage:
    Reserved buffer      :               32 pkts                  6656 bytes
    Shared buffer        :               43 pkts                  8944 bytes
Queue: 2, Forwarding classes: 8q2
  Queued:
    Packets              :              16754769                 30221 pps
    Bytes                :            8826383526             127522040 bps
  Transmitted:
    Packets              :               4052168                  6369 pps
    Bytes                :            2074710016              26095472 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:              12702601                 23852 pps
    Total-dropped bytes  :            6751673510             101426568 bps
  Queue Buffer Usage:
    Reserved buffer      :               32 pkts                  6656 bytes
    Shared buffer        :            24232 pkts               5040256 bytes
Queue: 3, Forwarding classes: 8q3
  Queued:
    Packets              :              16754937                 30328 pps
    Bytes                :            8826406908             127965968 bps
  Transmitted:
    Packets              :               4052173                  6378 pps
    Bytes                :            2074646336              26134456 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:              12702764                 23950 pps
    Total-dropped bytes  :            6751760572             101831512 bps
  Queue Buffer Usage:
    Reserved buffer      :               32 pkts                  6656 bytes
    Shared buffer        :            24205 pkts               5034640 bytes
Queue: 4, Forwarding classes: 8q4
  Queued:
    Packets              :              16762735                 33406 pps
    Bytes                :            8738360722             139886136 bps
  Transmitted:
    Packets              :               8779404                 13828 pps
    Bytes                :            4495054848              56648672 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:               7983331                 19578 pps
    Total-dropped bytes  :            4243305874              83237464 bps
  Queue Buffer Usage:
    Reserved buffer      :               32 pkts                  6656 bytes
    Shared buffer        :               46 pkts                  9568 bytes
Queue: 5, Forwarding classes: 8q5
  Queued:
    Packets              :              16762734                 33285 pps
    Bytes                :            8738359924             139389112 bps
  Transmitted:
    Packets              :               8779416                 13788 pps
    Bytes                :            4495060992              56485136 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:               7983318                 19497 pps
    Total-dropped bytes  :            4243298932              82903976 bps
  Queue Buffer Usage:
    Reserved buffer      :               32 pkts                  6656 bytes
    Shared buffer        :               52 pkts                 10816 bytes
Queue: 6, Forwarding classes: 8q6
  Queued:
    Packets              :              16762732                 27688 pps
    Bytes                :            8721917186             115931832 bps
  Transmitted:
    Packets              :               9618678                 12111 pps
    Bytes                :            4924763136              49614432 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:               7144054                 15577 pps
    Total-dropped bytes  :            3797154050              66317400 bps
  Queue Buffer Usage:
    Reserved buffer      :               24 pkts                  4992 bytes
    Shared buffer        :                0 pkts                     0 bytes
Queue: 7, Forwarding classes: 8q7
  Queued:
    Packets              :              16762733                 26045 pps
    Bytes                :            8710804790             108947832 bps
  Transmitted:
    Packets              :              10187546                 11805 pps
    Bytes                :            5216023552              48359208 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:               6575187                 14240 pps
    Total-dropped bytes  :            3494781238              60588624 bps
  Queue Buffer Usage:
    Reserved buffer      :               21 pkts                  4368 bytes
    Shared buffer        :                0 pkts                     0 bytes

content_copy zoom_out_map
user@host# run show interfaces queue ge-0/0/4 remaining-traffic 
Physical interface: ge-0/0/4, Enabled, Physical link is Up
  Interface index: 648, SNMP ifIndex: 1763
  Description:  UNI side - connected to ixia 6/9 
Forwarding classes: 16 supported, 8 in use
Egress queues: 8 supported, 8 in use
Queue: 0, Forwarding classes: 8q0
  Queued:
    Packets              :                 77501                  6106 pps
    Bytes                :              41609646              26235344 bps
  Transmitted:
    Packets              :                  3206                   243 pps
    Bytes                :               1641472                999248 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:                 74295                  5863 pps
    Total-dropped bytes  :              39968174              25236096 bps
  Queue Buffer Usage:
    Reserved buffer      :                8 pkts                  1664 bytes
    Shared buffer        :             1495 pkts                310960 bytes
Queue: 1, Forwarding classes: 8q1
  Queued:
    Packets              :                 77489                  6100 pps
    Bytes                :              41444318              26107008 bps
  Transmitted:
    Packets              :                  9330                   732 pps
    Bytes                :               4776960               3002344 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:                 68159                  5368 pps
    Total-dropped bytes  :              36667358              23104664 bps
  Queue Buffer Usage:
    Reserved buffer      :                8 pkts                  1664 bytes
    Shared buffer        :             1435 pkts                298480 bytes
Queue: 2, Forwarding classes: 8q2
  Queued:
    Packets              :                 77485                  6099 pps
    Bytes                :              41362188              26054080 bps
  Transmitted:
    Packets              :                 12417                   975 pps
    Bytes                :               6357504               3996992 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:                 65068                  5124 pps
    Total-dropped bytes  :              35004684              22057088 bps
  Queue Buffer Usage:
    Reserved buffer      :                8 pkts                  1664 bytes
    Shared buffer        :             1507 pkts                313456 bytes
Queue: 3, Forwarding classes: 8q3
  Queued:
    Packets              :                 77547                  6114 pps
    Bytes                :              41609314              26271632 bps
  Transmitted:
    Packets              :                  3261                   243 pps
    Bytes                :               1646862                999248 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:                 74286                  5871 pps
    Total-dropped bytes  :              39962452              25272384 bps
  Queue Buffer Usage:
    Reserved buffer      :                8 pkts                  1664 bytes
    Shared buffer        :             1381 pkts                287248 bytes
Queue: 4, Forwarding classes: 8q4
  Queued:
    Packets              :                 77502                  6105 pps
    Bytes                :              41450894              26131200 bps
  Transmitted:
    Packets              :                  9349                   732 pps
    Bytes                :               4786688               3002344 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:                 68153                  5373 pps
    Total-dropped bytes  :              36664206              23128856 bps
  Queue Buffer Usage:
    Reserved buffer      :                8 pkts                  1664 bytes
    Shared buffer        :             1366 pkts                284128 bytes
Queue: 5, Forwarding classes: 8q5
  Queued:
    Packets              :                 77480                  6094 pps
    Bytes                :              41358904              26032304 bps
  Transmitted:
    Packets              :                 12444                   975 pps
    Bytes                :               6371328               3996992 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:                 65036                  5119 pps
    Total-dropped bytes  :              34987576              22035312 bps
  Queue Buffer Usage:
    Reserved buffer      :                8 pkts                  1664 bytes
    Shared buffer        :             1552 pkts                322816 bytes
Queue: 6, Forwarding classes: 8q6
  Queued:
    Packets              :                 77970                  6099 pps
    Bytes                :              41151002              25749384 bps
  Transmitted:
    Packets              :                 30585                  2440 pps
    Bytes                :              15659520               9997088 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:                 47385                  3659 pps
    Total-dropped bytes  :              25491482              15752296 bps
  Queue Buffer Usage:
    Reserved buffer      :                3 pkts                   624 bytes
    Shared buffer        :                0 pkts                     0 bytes
Queue: 7, Forwarding classes: 8q7
  Queued:
    Packets              :                 77971                  6099 pps
    Bytes                :              41151540              25749384 bps
  Transmitted:
    Packets              :                 30585                  2440 pps
    Bytes                :              15659520               9997088 bps
    Tail-dropped packets : Not Available  
    RL-dropped packets   :                     0                     0 pps
    RL-dropped bytes     :                     0                     0 bps
    Total-dropped packets:                 47386                  3659 pps
    Total-dropped bytes  :              25492020              15752296 bps
  Queue Buffer Usage:
    Reserved buffer      :                3 pkts                   624 bytes
    Shared buffer        :                0 pkts                     0 bytes

show class-of-service packet-buffer usage—Shows the total buffer usage of the system. The following is a sample output of the show class-of-service packet-buffer usage CLI command:

content_copy zoom_out_map
user@host# run show class-of-service packet-buffer usage    
            Egress:
            Total Buffer Bytes     :  10652.89 KB  in use out of 12480.00 KB   
            Total Buffer Pkts      :  52445        in use out of 61440         
            Dedicated Buffer Bytes :  48.14 KB     in use out of 738.16 KB     
            Dedicated Buffer Pkts  :  237          in use out of 3634          
            Shared Buffer Bytes    :  10604.75 KB  in use out of 11741.84 KB   
            Shared Buffer Pkts     :  52208        in use out of 57806         

For interface sets, you can run the following commands:
- show interfaces interface-set voq—Show VOQ statistics for the interface-set.
- show interfaces interface-set detail—Display detailed output for the interface set.
- show interfaces interface-set voq remaining-traffic—Show remaining traffic queue statistics for the interface set.

You can use the syslog to view the log messages and error reports.

arrow_backward PREVIOUS CoS for NAT Services on ACX Series Routers

NEXT arrow_forward Storm Control on ACX Series Routers Overview

Class of Service User Guide (Routers and EX9200 Switches)

ON THIS PAGE

Hierarchical Class of Service in ACX Series Routers

Hierarchical Scheduling on the Physical Interface

Traffic Control Profiles

Schedulers

Deep Buffer Control

Drop Profiles

Scheduler Maps

Applying the Traffic Control Profiles

HCoS on Aggregated Ethernet Interfaces

Subscriber Services

Configuring hierarchical class of service for Layer 3 VPN Service

Configuring hierarchical class of service for Layer 2 VPN (Ethernet Pseudowires) Service

Configuring hierarchical class of service for VPLS Service

Verifying the hierarchical class of service configurations