close
keyboard_arrow_left
Table of Contents
- play_arrow Congestion Management, Tail Drop Profiles, Queue Shaping, and Explicit Congestion Notification (ECN)
- play_arrow Congestion Management
- play_arrow Tail Drop Profiles
- play_arrow Queue Shaping
- play_arrow Explicit Congestion Notification (ECN)
-
- play_arrow CoS on Overlay Networks
- play_arrow CoS on MPLS Networks
- Understanding Using CoS with MPLS Networks on EX Series Switches
- Example: Combining CoS with MPLS on EX Series Switches
- Configuring CoS on an MPLS Provider Edge Switch Using IP Over MPLS
- Configuring CoS on an MPLS Provider Edge Switch Using Circuit Cross-Connect
- Configuring CoS on Provider Switches of an MPLS Network
- play_arrow CoS on EVPN VXLANs
-
- play_arrow Configuration Statements and Operational Commands
list Table of Contents
keyboard_arrow_right
Example: Configuring CoS on EX Series Switches
date_range
14-Dec-23
Configure class of service (CoS) on your switch to manage traffic so that when the network experiences congestion and delay, critical applications are protected. Using CoS, you can divide traffic on your switch into classes and provide various levels of throughput and packet loss. This is especially important for traffic that is sensitive to jitter and delay, such as voice traffic.
This example shows how to configure CoS on a single EX Series switch in the network.
Requirements
This example uses the following hardware and software components:
EX Series switches
Junos OS Release 9.0 or later for EX Series switches
Overview and Topology
This example uses the topology shown in Figure 1.
Figure 1: Topology for Configuring CoS 
The topology for this configuration example consists of EX switches at the access layer.
The EX Series access switches are configured to support VLAN membership. On the
access layer switch, interfaces ge-0/0/0 and
ge-0/0/1 are assigned to the voice VLAN
(voice-vlan) for two VoIP IP phones. Switch interface
ge-0/0/2 is assigned to the camera VLAN
(camera-vlan) for the surveillance camera. Switch interfaces
ge-0/0/3, ge-0/0/4, ge-0/0/5,
and ge-0/0/6 are assigned to the server VLAN
(server-vlan) for the servers hosting various applications such
as those provided by Citrix, Microsoft, Oracle, and SAP. The trunk ports, ge-0/0/20
and ge-0/0/21, are assigned to the server, voice, employee, and camera VLANs and
used as uplink ports to connect the distribution layer switches.
Table 1 shows the VLAN configuration components.
VLAN Name | VLAN ID | VLAN Subnet and Available IP Addresses | VLAN Description |
|---|---|---|---|
|
|
| Voice VLAN used for employee VoIP communication. |
|
|
| VLAN for the surveillance cameras. |
|
|
| VLAN for the servers hosting enterprise applications. |
PoE-capable ports on EX Series switches support Power over Ethernet (PoE) to provide both network connectivity and power for VoIP telephones connecting to the ports. Table 2 shows the switch interfaces that are assigned to the VLANs and the IP addresses for devices connected to the switch ports on a 48-port switch, all ports of which are PoE-capable.
Interfaces | VLAN Membership | IP Addresses | Port Devices |
|---|---|---|---|
|
|
| Two VoIP telephones. |
|
|
| Surveillance camera. |
|
|
| Four servers hosting applications such as those provided by Citrix, Microsoft, Oracle, and SAP. |
Note:
This example shows how to configure CoS on a standalone EX Series switch. This example does not consider across-the-network applications of CoS in which you might implement different configurations on ingress and egress switches to provide differentiated treatment to different classes across a set of nodes in a network.
Note:
Although you will sometimes see schedulers configured for strict-high priority with a transmit-rate configured, that configuration is misleading because strict-high priority schedulers get unlimited bandwidth and the transmit-rate parameter has no effect on them. With this configuration, lower priority queues can suffer starvation if there is congestion. It is better that schedulers with strict-high priority have shaping-rate parameters configured, which is the correct way to limit their bandwidth.
Configuration
Procedure
CLI Quick Configuration
To quickly configure CoS, copy the following commands and paste them into the switch terminal window:
content_copy zoom_out_map
[edit] set class-of-service forwarding-classes class app queue-num 5 set class-of-service forwarding-classes class mail queue-num 1 set class-of-service forwarding-classes class db queue-num 2 set class-of-service forwarding-classes class erp queue-num 3 set class-of-service forwarding-classes class video queue-num 4 set class-of-service forwarding-classes class best-effort queue-num 0 set class-of-service forwarding-classes class voice queue-num 6 set class-of-service forwarding-classes class network-control queue-num 7 set firewall family ethernet-switching filter voip_class term voip from source-address 192.168.1.1/28 set firewall family ethernet-switching filter voip_class term voip from source-address 192.168.1.2/28 set firewall family ethernet-switching filter voip_class term voip from protocol udp set firewall family ethernet-switching filter voip_class term voip from source-port 2698 set firewall family ethernet-switching filter voip_class term voip then forwarding-class voice loss-priority low set firewall family ethernet-switching filter voip_class term network_control from precedence [net-control internet-control] set firewall family ethernet-switching filter voip_class term network_control then forwarding-class network-control loss-priority low set firewall family ethernet-switching filter voip_class term best_effort_traffic then forwarding-class best-effort loss-priority low set interfaces ge-0/0/0 description phone1–voip-ingress-port set interfaces ge-0/0/0 unit 0 family ethernet-switching filter input voip_class set class-of-service interfaces ge-0/0/0 shaping-rate 100m set interfaces ge-0/0/1 description phone2–voip-ingress-port set interfaces ge-0/0/1 unit 0 family ethernet-switching filter input voip_class set firewall family ethernet-switching filter video_class term video from source-address 192.168.1.17/28 set firewall family ethernet-switching filter video_class term video from protocol udp set firewall family ethernet-switching filter video_class term video from source-port 2979 set firewall family ethernet-switching filter video_class term video then forwarding-class video loss-priority low set firewall family ethernet-switching filter video_class term network_control from precedence [net-control internet-control] set firewall family ethernet-switching filter video_class term network_control then forwarding-class network-control loss-priority low set firewall family ethernet-switching filter video_class term best_effort_traffic then forwarding-class best-effort loss-priority low set interfaces ge-0/0/2 description video-ingress-port set interfaces ge-0/0/2 unit 0 family ethernet-switching filter input video_class set firewall family ethernet-switching filter app_class term app from source-address 192.168.1.33/28 set firewall family ethernet-switching filter app_class term app from protocol tcp set firewall family ethernet-switching filter app_class term app from source-port [1494 2512 2513 2598 2897] set firewall family ethernet-switching filter app_class term app then forwarding-class app loss-priority low set firewall family ethernet-switching filter app_class term mail from source-address 192.168.1.34/28 set firewall family ethernet-switching filter app_class term mail from protocol tcp set firewall family ethernet-switching filter app_class term mail from source-port [25 143 389 691 993 3268 3269] set firewall family ethernet-switching filter app_class term mail then forwarding-class mail loss-priority low set firewall family ethernet-switching filter app_class term db from source-address 192.168.1.35/28 set firewall family ethernet-switching filter app_class term db from protocol tcp set firewall family ethernet-switching filter app_class term db from source-port [1521 1525 1527 1571 1810 2481] set firewall family ethernet-switching filter app_class term db then forwarding-class db loss-priority low set firewall family ethernet-switching filter app_class term erp from source-address 192.168.1.36/28 set firewall family ethernet-switching filter app_class term erp from protocol tcp set firewall family ethernet-switching filter app_class term erp from source-port [3200 3300 3301 3600] set firewall family ethernet-switching filter app_class term erp then forwarding-class erp loss-priority low set firewall family ethernet-switching filter app_class term network_control from precedence [net-control internet-control] set firewall family ethernet-switching filter app_class term network_control then forwarding-class network-control loss-priority low set firewall family ethernet-switching filter app_class term best_effort_traffic then forwarding-class best-effort loss-priority low set interfaces ge-0/0/3 unit 0 family ethernet-switching filter input app_class set interfaces ge-0/0/4 unit 0 family ethernet-switching filter input app_class set interfaces ge-0/0/5 unit 0 family ethernet-switching filter input app_class set interfaces ge-0/0/6 unit 0 family ethernet-switching filter input app_class set class-of-service schedulers voice-sched shaping-rate percent 10 set class-of-service schedulers voice-sched buffer-size percent 10 set class-of-service schedulers voice-sched priority strict-high set class-of-service schedulers video-sched priority low set class-of-service schedulers video-sched transmit-rate percent 15 set class-of-service schedulers app-sched buffer-size percent 10 set class-of-service schedulers app-sched priority low set class-of-service schedulers app-sched transmit-rate percent 10 set class-of-service schedulers mail-sched buffer-size percent 5 set class-of-service schedulers mail-sched priority low set class-of-service schedulers mail-sched transmit-rate percent 5 set class-of-service schedulers db-sched buffer-size percent 10 set class-of-service schedulers db-sched priority low set class-of-service schedulers db-sched transmit-rate percent 10 set class-of-service schedulers erp-sched buffer-size percent 10 set class-of-service schedulers erp-sched priority low set class-of-service schedulers erp-sched transmit-rate percent 10 set class-of-service schedulers nc-sched shaping-rate percent 5 set class-of-service schedulers nc-sched buffer-size percent 5 set class-of-service schedulers nc-sched priority strict-high set class-of-service schedulers be-sched buffer-size percent 35 set class-of-service schedulers be-sched priority low set class-of-service schedulers be-sched transmit-rate percent 35 set class-of-service scheduler-maps ethernet-cos-map forwarding-class voice scheduler voice-sched set class-of-service scheduler-maps ethernet-cos-map forwarding-class video scheduler video-sched set class-of-service scheduler-maps ethernet-cos-map forwarding-class app scheduler app-sched set class-of-service scheduler-maps ethernet-cos-map forwarding-class mail scheduler mail-sched set class-of-service scheduler-maps ethernet-cos-map forwarding-class db scheduler db-sched set class-of-service scheduler-maps ethernet-cos-map forwarding-class erp scheduler erp-sched set class-of-service scheduler-maps ethernet-cos-map forwarding-class network-control scheduler nc-sched set class-of-service scheduler-maps ethernet-cos-map forwarding-class best-effort scheduler be-sched set class-of-service interfaces ge-0/0/20 scheduler-map ethernet-cos-map set class-of-service interfaces ge-0/0/21 scheduler-map ethernet-cos-map set class-of-service schedulers voice-sched-queue-shap shaping-rate 30m set class-of-service scheduler-maps sched-map-be forwarding-class best-effort scheduler voice-sched-queue-shap set class-of-service interfaces ge-0/0/2 scheduler-map sched-map-be
Step-by-Step Procedure
To configure and apply CoS:
Configure one-to-one mappings between eight forwarding classes and eight queues:
content_copy zoom_out_map[edit class-of-service] user@switch# set forwarding-classes class app queue-num 5 user@switch# set forwarding-classes class mail queue-num 1 user@switch# set forwarding-classes class db queue-num 2 user@switch# set forwarding-classes class erp queue-num 3 user@switch# set forwarding-classes class video queue-num 4 user@switch# set forwarding-classes class best-effort queue-num 0 user@switch# set forwarding-classes class voice queue-num 6 user@switch# set forwarding-classes class network-control queue-num 7
Define the firewall filter
voip_classto classify the VoIP traffic:content_copy zoom_out_map[edit firewall] user@switch# set family ethernet-switching filter voip_class
Define the term
voip:content_copy zoom_out_map[edit firewall] user@switch# set family ethernet-switching filter voip_class term voip from source-address 192.168.1.1/28 user@switch# set family ethernet-switching filter voip_class term voip from source-address 192.168.1.2/28 user@switch# set family ethernet-switching filter voip_class term voip protocol udp user@switch# set family ethernet-switching filter voip_class term voip source-port 2698 user@switch# set family ethernet-switching filter voip_class term voip then forwarding-class voice loss-priority low
Define the term
network_control(for thevoip_classfilter):content_copy zoom_out_map[edit firewall] user@switch# set family ethernet-switching filter voip_class term network_control from precedence [net-control internet-control] user@switch# set family ethernet-switching filter voip_class term network_control then forwarding-class network-control loss-priority low
Define the term
best_effort_trafficwith no match conditions (for thevoip_classfilter):content_copy zoom_out_map[edit firewall] user@switch# set family ethernet-switching filter voip_class term best_effort_traffic then forwarding-class best-effort loss-priority low
Apply the firewall filter
voip_classas an input filter to the interfaces for the VoIP phones:content_copy zoom_out_map[edit interfaces] user@switch# set ge-0/0/0 description phone1-voip-ingress-port user@switch# set ge-0/0/0 unit 0 family ethernet-switching filter input voip_class user@switch# set ge-0/0/1 description phone2-voip-ingress-port user@switch# set ge-0/0/1 unit 0 family ethernet-switching filter input voip_class
Apply port shaping on the interface ge-0/0/0:
content_copy zoom_out_map[edit] user@switch# set class-of-service interfaces ge-0/0/0 shaping-rate 100m
Define the firewall filter
video_classto classify the video traffic:content_copy zoom_out_map[edit firewall] user@switch# set family ethernet-switching filter video_class
Define the term
video:content_copy zoom_out_map[edit firewall] user@switch# set family ethernet-switching filter video_class term video from source-address 192.168.1.17/28 user@switch# set family ethernet-switching filter video_class term video protocol udp user@switch# set family ethernet-switching filter video_class term video source-port 2979 user@switch# set family ethernet-switching filter video_class term video then forwarding-class video loss-priority low
Define the term
network_control(for thevideo_classfilter):content_copy zoom_out_map[edit firewall] user@switch# set family ethernet-switching filter video_class term network_control from precedence [net-control internet-control] user@switch# set family ethernet-switching filter video_class term network_control then forwarding-class network-control loss-priority low
Define the term
best_effort_trafficwith no match conditions (for thevideo_classfilter):content_copy zoom_out_map[edit firewall] user@switch# set family ethernet-switching filter video_class term best_effort_traffic then forwarding-class best-effort loss-priority low
Apply the firewall filter
video_classas an input filter to the interface for the surveillance camera:content_copy zoom_out_map[edit interfaces] user@switch# set ge-0/0/2 description video-ingress-port user@switch# set ge-0/0/2 unit 0 family ethernet-switching filter input video_class
Define the firewall filter
app_classto classify the application server traffic:content_copy zoom_out_map[edit firewall] user@switch# set family ethernet-switching filter app_class
Define the term
app(for theapp_classfilter):content_copy zoom_out_map[edit firewall] user@switch# set family ethernet-switching filter app_class term app from source-address 192.168.1.33/28 user@switch# set family ethernet-switching filter app_class term app protocol tcp user@switch# set family ethernet-switching filter app_class term app source-port [1494 2512 2513 2598 2897] user@switch# set family ethernet-switching filter app_class term app then forwarding-class app loss-priority low
Define the term
mail(for theapp_classfilter):content_copy zoom_out_map[edit firewall] user@switch# set family ethernet-switching filter app_class term mail from source-address 192.168.1.34/28 user@switch# set family ethernet-switching filter app_class term mail protocol tcp user@switch# set family ethernet-switching filter app_class term mail source-port [25 143 389 691 993 3268 3269] user@switch# set family ethernet-switching filter app_class term mail then forwarding-class mail loss-priority low
Define the term
db(for theapp_classfilter):content_copy zoom_out_map[edit firewall] user@switch# set family ethernet-switching filter app_class term db from source-address 192.168.1.35/28 user@switch# set family ethernet-switching filter app_class term db protocol tcp user@switch# set family ethernet-switching filter app_class term db source-port [1521 1525 1527 1571 1810 2481] user@switch# set family ethernet-switching filter app_class term db then forwarding-class db loss-priority low
Define the term
erp(for theapp_classfilter):content_copy zoom_out_map[edit firewall] user@switch# set family ethernet-switching filter app_class term erp from source-address 192.168.1.36/28 user@switch# set family ethernet-switching filter app_class term erp protocol tcp user@switch# set family ethernet-switching filter app_class term erp source-port [3200 3300 3301 3600] user@switch# set family ethernet-switching filter app_class term erp then forwarding-class erp loss-priority low
Define the term
network_control(for theapp_classfilter):content_copy zoom_out_map[edit firewall] user@switch# set family ethernet-switching filter app_class term network_control from precedence [net-control internet-control] user@switch# set family ethernet-switching filter app_class term network_control then forwarding-class network-control loss-priority low
Define the term
best_effort_traffic(for theapp_classfilter):content_copy zoom_out_map[edit firewall] user@switch# set family ethernet-switching filter app_class term best_effort_traffic then forwarding-class best-effort loss-priority low
Apply the firewall filter
app_classas an input filter to the interfaces for the servers hosting applications:content_copy zoom_out_map[edit interfaces] user@switch# set ge-0/0/3 unit 0 family ethernet-switching filter input app_class user@switch# set ge-0/0/4 unit 0 family ethernet-switching filter input app_class user@switch# set ge-0/0/5 unit 0 family ethernet-switching filter input app_class user@switch# set ge-0/0/6 unit 0 family ethernet-switching filter input app_class
Configure schedulers:
content_copy zoom_out_map[edit class-of-service] user@switch# set schedulers voice-sched shaping-rate percent 10 user@switch# set schedulers voice-sched buffer-size percent 10 user@switch# set schedulers voice-sched priority strict-high user@switch# set schedulers video-sched priority low user@switch# set schedulers video-sched transmit-rate percent 15 user@switch# set schedulers app-sched buffer-size percent 10 user@switch# set schedulers app-sched priority low user@switch# set schedulers app-sched transmit-rate percent 10 user@switch# set schedulers mail-sched buffer-size percent 5 user@switch# set schedulers mail-sched priority low user@switch# set schedulers mail-sched transmit-rate percent 5 user@switch# set schedulers db-sched buffer-size percent 10 user@switch# set schedulers db-sched priority low user@switch# set schedulers db-sched transmit-rate percent 10 user@switch# set schedulers erp-sched buffer-size percent 10 user@switch# set schedulers erp-sched priority low user@switch# set schedulers erp-sched transmit-rate percent 10 user@switch# set schedulers nc-sched shaping-rate percent 5 user@switch# set schedulers nc-sched buffer-size percent 5 user@switch# set schedulers nc-sched priority strict-high user@switch# set schedulers nc-sched transmit-rate percent 5 user@switch# set schedulers be-sched buffer-size percent 35 user@switch# set schedulers be-sched priority low user@switch# set schedulers be-sched transmit-rate percent 35
Assign the forwarding classes to schedulers with the scheduler map
ethernet-cos-map:content_copy zoom_out_map[edit class-of-service] user@switch# set scheduler-maps ethernet-cos-map forwarding-class voice scheduler voice-sched user@switch# set scheduler-maps ethernet-cos-map forwarding-class video scheduler video-sched user@switch# set scheduler-maps ethernet-cos-map forwarding-class app scheduler app-sched user@switch# set scheduler-maps ethernet-cos-map forwarding-class mail scheduler mail-sched user@switch# set scheduler-maps ethernet-cos-map forwarding-class db scheduler db-sched user@switch# set scheduler-maps ethernet-cos-map forwarding-class erp scheduler erp-sched user@switch# set scheduler-maps ethernet-cos-map forwarding-class network-control scheduler nc-sched user@switch# set scheduler-maps ethernet-cos-map forwarding-class best-effort scheduler be-sched
Associate the scheduler map with the outgoing interfaces:
content_copy zoom_out_map[edit class-of-service interfaces] user@switch# set ge-0/0/20 scheduler-map ethernet-cos-map user@switch# set ge-0/0/21 scheduler-map ethernet-cos-map
Apply queue shaping for the best-effort queue:
content_copy zoom_out_map[edit] user@switch# set class-of-service schedulers voice-sched-queue-shap shaping-rate 30m user@switch# set class-of-service scheduler-maps sched-map-be forwarding-class best-effort scheduler voice-sched-queue-shap user@switch# set class-of-service interfaces ge-0/0/2 scheduler-map sched-map-be
Results
Display the results of the configuration:
content_copy zoom_out_map
user@switch> show firewall
content_copy zoom_out_map
firewall family ethernet-switching {
filter voip_class {
term voip {
from {
source-address {
192.168.1.1/28;
192.168.1.2/28;
}
protocol udp;
source-port 2698;
}
then {
forwarding-class voice;
loss-priority low;
}
}
term network control {
from {
precedence [net-control internet-control];
}
then {
forwarding-class network-control;
loss-priority low;
}
}
term best_effort_traffic {
then {
forwarding-class best-effort;
loss-priority low;
}
}
}
filter video_class {
term video {
from {
source-address {
192.168.1.17/28;
}
protocol udp;
source-port 2979;
}
then {
forwarding-class video;
loss-priority low;
}
}
term network control {
from {
precedence [net-control internet-control];
}
then {
forwarding-class network-control;
loss-priority low;
}
}
term best_effort_traffic {
then {
forwarding-class best-effort;
loss-priority low;
}
}
}
filter app_class {
term app {
from {
source-address {
192.168.1.33/28;
}
protocol tcp;
source-port [1491 2512 2513 2598 2897];
}
then {
forwarding-class app;
loss-priority low;
}
}
term mail {
from {
source-address {
192.168.1.34/28;
}
protocol tcp;
source-port [25 143 389 691 993 3268 3269];
}
then {
forwarding-class mail;
loss-priority low;
}
}
term db {
from {
source-address {
192.168.1.35/28;
}
protocol tcp;
source-port [1521 1525 1527 1571 1810 2481];
}
then {
forwarding-class db;
loss-priority low;
}
}
term erp {
from {
source-address {
192.168.1.36/28;
}
protocol tcp;
source-port [3200 3300 3301 3600];
}
then {
forwarding-class erp;
loss-priority low;
}
}
term network control {
from {
precedence [net-control internet-control];
}
then {
forwarding-class network-control;
loss-priority low;
}
}
term best_effort_traffic {
then {
forwarding-class best-effort;
loss-priority low;
}
}
}
}
content_copy zoom_out_map
user@switch# show class-of-service
content_copy zoom_out_map
forwarding-classes {
class app queue-num 5;
class mail queue-num 1;
class db queue-num 2;
class erp queue-num 3;
class video queue-num 4;
class best-effort queue-num 0;
class voice queue-num 6;
class network-control queue-num 7;
}
interfaces {
ge-0/0/0 {
shaping-rate 100m;
}
ge-0/0/2 {
scheduler-map sched-map-be;
}
ge-0/0/20 {
scheduler-map ethernet-cos-map;
}
ge-0/0/21 {
scheduler-map ethernet-cos-map;
}
}
schedulers {
voice-sched-queue-shap {
shaping-rate 30m;
}
voice-sched {
shaping-rate percent 10;
buffer-size percent 10;
priority strict-high;
}
video-sched {
buffer-size percent 15;
priority low;
transmit-rate percent 15;
}
app-sched {
buffer-size percent 10;
priority low;
transmit-rate percent 10;
}
mail-sched {
buffer-size percent 5;
priority low;
transmit-rate percent 5;
}
db-sched {
buffer-size percent 10;
priority low;
transmit-rate percent 10;
}
erp-sched {
buffer-size percent 10;
priority low;
transmit-rate percent 10;
}
nc-sched {
shaping-rate percent 5;
buffer-size percent 5;
priority strict-high;
}
be-sched {
buffer-size percent 35;
priority low;
transmit-rate percent 35;
}
}
scheduler-maps {
ethernet-cos-map {
forwarding-class voice scheduler voice-sched;
forwarding-class video scheduler video-sched;
forwarding-class app scheduler app-sched;
forwarding-class mail scheduler mail-sched;
forwarding-class db scheduler db-sched;
forwarding-class erp scheduler erp-sched;
forwarding-class network-control scheduler nc-sched;
forwarding-class best-effort scheduler be-sched;
}
sched-map-be {
forwarding-class best-effort scheduler voice-sched-queue-shap;
}
}
content_copy zoom_out_map
user@switch# show interfaces
content_copy zoom_out_map
ge-0/0/0 {
unit 0 {
family ethernet {
filter {
input voip_class;
}
}
}
}
ge-0/0/1 {
unit 0 {
family ethernet {
filter {
input voip_class;
}
}
}
}
ge-0/0/2 {
unit 0 {
family ethernet {
filter {
input video_class;
}
}
}
}
ge-0/0/3 {
unit 0 {
family ethernet {
filter {
input app_class;
}
}
}
}
ge-0/0/4 {
unit 0 {
family ethernet {
filter {
input app_class;
}
}
}
}
ge-0/0/5 {
unit 0 {
family ethernet {
filter {
input app_class;
}
}
}
}
ge-0/0/6 {
unit 0 {
family ethernet {
filter {
input app_class;
}
}
}
}
Verification
To confirm that the configuration is working properly, perform these tasks:
- Verifying That the Defined Forwarding Classes Exist and Are Mapped to Queues
- Verifying That the Forwarding Classes Have Been Assigned to Schedulers
- Verifying That the Scheduler Map Has Been Applied to the Interfaces
- Verifying That Port Shaping Has Been Applied
- Verifying That Queue Shaping Has Been Applied
Verifying That the Defined Forwarding Classes Exist and Are Mapped to Queues
Purpose
Verify that the forwarding classes app, best-effort, db, erp, mail, network-control, video, and voice have been defined and mapped to queues.
Action
content_copy zoom_out_map
user@switch> show class-of-service forwarding-class Forwarding class ID Queue app 0 5 db 1 2 erp 2 3 best-effort 3 0 mail 4 1 voice 5 6 video 6 4 network-control 7 7
Meaning
This output shows that the forwarding classes have been defined and mapped to appropriate queues.
Verifying That the Forwarding Classes Have Been Assigned to Schedulers
Purpose
Verify that the forwarding classes have been assigned to schedulers.
Action
content_copy zoom_out_map
user@switch> show class-of-service scheduler-map
Scheduler map: ethernet-cos-map, Index: 2
Scheduler: voice-sched, Forwarding class: voice, Index: 22
Shaping rate: 10 percent, Rate Limit: none, Buffer size: 10 percent,
Priority: Strict-high
Drop profiles:
Loss priority Protocol Index Name
High non-TCP 1 <default-drop-profile>
High TCP 1 <default-drop-profile>
Scheduler: video-sched, Forwarding class: video, Index: 22
Transmit rate: 10 percent, Rate Limit: none, Buffer size: 10 percent,
Priority: low
Drop profiles:
Loss priority Protocol Index Name
High non-TCP 1 <default-drop-profile>
High TCP 1 <default-drop-profile>
Scheduler: app-sched, Forwarding class: app, Index: 22
Transmit rate: 10 percent, Rate Limit: none, Buffer size: 10 percent,
Priority: low
Drop profiles:
Loss priority Protocol Index Name
High non-TCP 1 <default-drop-profile>
High TCP 1 <default-drop-profile>
Scheduler: mail-sched, Forwarding class: mail, Index: 22
Transmit rate: 5 percent, Rate Limit: none, Buffer size: 5 percent,
Priority: low
Drop profiles:
Loss priority Protocol Index Name
High non-TCP 1 <default-drop-profile>
High TCP 1 <default-drop-profile>
Scheduler: db-sched, Forwarding class: db, Index: 22
Transmit rate: 10 percent, Rate Limit: none, Buffer size: 10 percent,
Priority: low
Drop profiles:
Loss priority Protocol Index Name
High non-TCP 1 <default-drop-profile>
High TCP 1 <default-drop-profile>
Scheduler: erp-sched, Forwarding class: erp, Index: 22
Transmit rate: 10 percent, Rate Limit: none, Buffer size: 10 percent,
Priority: low
Drop profiles:
Loss priority Protocol Index Name
High non-TCP 1 <default-drop-profile>
High TCP 1 <default-drop-profile>
Scheduler: be-sched, Forwarding class: best-effort, Index: 20
Transmit rate: 35 percent, Rate Limit: none, Buffer size: 35 percent,
Priority: low
Drop profiles:
Loss priority Protocol Index Name
High non-TCP 1 <default-drop-profile>
High TCP 1 <default-drop-profile>
Scheduler: nc-sched, Forwarding class: network-control, Index: 22
Shaping rate: 5 percent, Rate Limit: none, Buffer size: 5 percent,
Priority: Strict-high
Drop profiles:
Loss priority Protocol Index Name
High non-TCP 1 <default-drop-profile>
High TCP 1 <default-drop-profile>
Meaning
This output shows that the forwarding classes have been assigned to schedulers.
Verifying That the Scheduler Map Has Been Applied to the Interfaces
Purpose
Verify that the scheduler map has been applied to the interfaces.
Action
content_copy zoom_out_map
user@switch> show class-of-service interface ... Physical interface: ge-0/0/20, Index: 149 Queues supported: 8, Queues in use: 8 Scheduler map: ethernet-cos-map, Index: 43366 Input scheduler map: <default>, Index: 3 ... Physical interface: ge-0/0/21, Index: 150 Queues supported: 8, Queues in use: 8 Scheduler map: ethernet-cos-map, Index: 15103 Input scheduler map: <default>, Index: 5 ...
Meaning
This output includes details of the interfaces to which the scheduler map (ethernet-cos-map) has been applied (ge-0/0/20 and ge-0/0/21).
Verifying That Port Shaping Has Been Applied
Purpose
Verify that the port shaping has been applied to an interface.
Action
Following is the output before port shaping is applied to the interface ge-0/0/0, when there is egress traffic of 400 Mpbs exiting on that interface:
content_copy zoom_out_map
user@switch> show interfaces ge-0/0/0 extensive
Physical interface: ge-0/0/0, Enabled, Physical link is Up
Interface index: 239, SNMP ifIndex: 548, Generation: 242
Link-level type: Ethernet, MTU: 1514, Speed: Auto, Duplex: Auto, BPDU Error: None, MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled, Flow control: Enabled, Auto-negotiation: Enabled, Remote fault: Online,
Media type: Copper
Device flags : Present Running
Interface flags: SNMP-Traps Internal: 0x0
Link flags : None
CoS queues : 8 supported, 8 maximum usable queues
Hold-times : Up 0 ms, Down 0 ms
Current address: 00:23:9c:0b:ae:8d, Hardware address: 00:23:9c:0b:ae:8d
Last flapped : 2012-07-07 03:21:52 UTC (1d 18:02 ago)
Statistics last cleared: 2012-07-07 23:54:34 UTC (21:29:59 ago)
Traffic statistics:
Input bytes : 0 0 bps
Output bytes : 2299853696 345934816 bps
Input packets: 0 0 pps
Output packets: 17967609 337827 pps
IPv6 transit statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Input errors:
Errors: 0, Drops: 0, Framing errors: 0, Runts: 0, Policed discards: 0, L3 incompletes: 0, L2 channel errors: 0, L2 mismatch timeouts: 0, FIFO errors: 0, Resource errors: 0
Output errors:
Carrier transitions: 0, Errors: 0, Drops: 0, Collisions: 0, Aged packets: 0, FIFO errors: 0, HS link CRC errors: 0, MTU errors: 0, Resource errors: 0
Egress queues: 8 supported, 4 in use
Queue counters: Queued packets Transmitted packets Dropped packets
0 best-effort 0 18302337 0
1 assured-forw 0 0 0
5 expedited-fo 0 0 0
7 network-cont 0 0 0
Queue number: Mapped forwarding classes
0 best-effort
1 assured-forwarding
5 expedited-forwarding
7 network-control
Active alarms : None
Active defects : None
MAC statistics: Receive Transmit
Total octets 0 2299853696
Total packets 0 17967609
Unicast packets 0 17967609
Broadcast packets 0 0
Multicast packets 0 0
CRC/Align errors 0 0
FIFO errors 0 0
MAC control frames 0 0
MAC pause frames 0 0
Oversized frames 0
Jabber frames 0
Fragment frames 0
Code violations 0
Autonegotiation information:
Negotiation status: Complete
Link partner:
Link mode: Full-duplex, Flow control: Symmetric, Remote fault: OK, Link partner Speed: 1000 Mbps
Local resolution:
Flow control: Symmetric, Remote fault: Link OK
Packet Forwarding Engine configuration:
Destination slot: 1
CoS information:
Direction : Output
CoS transmit queue Bandwidth Buffer Priority Limit
% bps % usec
0 best-effort 95 950000000 95 NA low none
7 network-control 5 50000000 5 NA low none
Interface transmit statistics: Disabled
Logical interface ge-1/0/10.0 (Index 69) (SNMP ifIndex 638) (Generation 138)
Flags: SNMP-Traps 0x0 Encapsulation: ENET2
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Local statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Transit statistics:
Input bytes : 0 0 bps
Output bytes : 0 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
Protocol eth-switch, Generation: 163, Route table: 0
Flags: Trunk-ModeThe Traffic statistics: field in this output shows that egress traffic is ~400 Mpbs (345,934,816 bps). When a port shaping of 100 Mbps is applied to the ge-0/0/0 interface, you see the following outputs for the show interfaces ge-0/0/0 statistics and the show class-of-service interface ge-0/0/0 commands:
content_copy zoom_out_map
user@switch> show interfaces ge-0/0/0 statistics
Physical interface: ge-0/0/0, Enabled, Physical link is Up
Interface index: 239, SNMP ifIndex: 548, Generation: 242
Link-level type: Ethernet, MTU: 1514, Speed: Auto, Duplex: Auto, BPDU Error: None, MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled, Flow control: Enabled, Auto-negotiation: Enabled, Remote fault: Online,
Media type: Copper
Device flags : Present Running
Interface flags: SNMP-Traps Internal: 0x0
Link flags : None
CoS queues : 8 supported, 8 maximum usable queues
Hold-times : Up 0 ms, Down 0 ms
Current address: 00:23:9c:0b:ae:8d, Hardware address: 00:23:9c:0b:ae:8d
Last flapped : 2012-07-07 03:21:52 UTC (1d 18:10 ago)
Statistics last cleared: 2012-07-07 23:54:34 UTC (21:37:58 ago)
Traffic statistics:
Input bytes : 0 0 bps
Output bytes : 15779512832 100223104 bps
Input packets: 0 0 pps
Output packets: 123277444 97874 pps
IPv6 transit statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Input errors:
Errors: 0, Drops: 0, Framing errors: 0, Runts: 0, Policed discards: 0, L3 incompletes: 0, L2 channel errors: 0, L2 mismatch timeouts: 0, FIFO errors: 0, Resource errors: 0
Output errors:
Carrier transitions: 0, Errors: 0, Drops: 0, Collisions: 0, Aged packets: 0, FIFO errors: 0, HS link CRC errors: 0, MTU errors: 0, Resource errors: 0
Egress queues: 8 supported, 4 in use
Queue counters: Queued packets Transmitted packets Dropped packets
0 best-effort 0 123350092 57012484
1 assured-forw 0 0 0
5 expedited-fo 0 0 0
7 network-cont 0 0 0
Queue number: Mapped forwarding classes
0 best-effort
1 assured-forwarding
5 expedited-forwarding
7 network-control
Active alarms : None
Active defects : None
MAC statistics: Receive Transmit
Total octets 0 15779512832
Total packets 0 123277444
Unicast packets 0 123277444
Broadcast packets 0 0
Multicast packets 0 0
CRC/Align errors 0 0
FIFO errors 0 0
MAC control frames 0 0
MAC pause frames 0 0
Oversized frames 0
Jabber frames 0
Fragment frames 0
Code violations 0
Autonegotiation information:
Negotiation status: Complete
Link partner:
Link mode: Full-duplex, Flow control: Symmetric, Remote fault: OK, Link partner Speed: 1000 Mbps
Local resolution:
Flow control: Symmetric, Remote fault: Link OK
Packet Forwarding Engine configuration:
Destination slot: 1
CoS information:
Direction : Output
CoS transmit queue Bandwidth Buffer Priority Limit
% bps % usec
0 best-effort 95 95000000 95 NA low none
7 network-control 5 5000000 5 NA low none
Interface transmit statistics: Disabled
Logical interface ge-1/0/10.0 (Index 69) (SNMP ifIndex 638) (Generation 138)
Flags: SNMP-Traps 0x0 Encapsulation: ENET2
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Local statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Transit statistics:
Input bytes : 0 0 bps
Output bytes : 0 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
Protocol eth-switch, Generation: 163, Route table: 0
Flags: Trunk-Mode
user@switch> show class-of-service interface ge-0/0/0
Physical interface: ge-0/0/0, Index: 165
Queues supported: 8, Queues in use: 4
Shaping rate: 100000000 bps
...
...Meaning
In the output for the show interfaces ge-0/0/0 statistics command, the Traffic statistics: field shows that egress traffic is ~100 Mbps (100,223,104 bps). The output for the show class-of-service interface ge-0/0/0 command shows that the shaping rate is 100,000,000 bps, which indicates that a port shaping of 100 Mbps is applied to the ge-0/0/0 interface.
Verifying That Queue Shaping Has Been Applied
Purpose
Verify that the queue shaping has been applied to the best-effort queue.
Action
Following is the output before queue shaping is applied to the best-effort queue when there is egress traffic of 400 Mpbs exiting on that interface:
content_copy zoom_out_map
user@switch> show interfaces ge-0/0/2 extensive
Physical interface: ge-0/0/2, Enabled, Physical link is Up
Interface index: 239, SNMP ifIndex: 548, Generation: 242
Link-level type: Ethernet, MTU: 1514, Speed: Auto, Duplex: Auto, BPDU Error: None, MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled, Flow control: Enabled, Auto-negotiation: Enabled, Remote fault: Online,
Media type: Copper
Device flags : Present Running
Interface flags: SNMP-Traps Internal: 0x0
Link flags : None
CoS queues : 8 supported, 8 maximum usable queues
Hold-times : Up 0 ms, Down 0 ms
Current address: 00:23:9c:0b:ae:8d, Hardware address: 00:23:9c:0b:ae:8d
Last flapped : 2012-07-07 03:21:52 UTC (1d 18:02 ago)
Statistics last cleared: 2012-07-07 23:54:34 UTC (21:29:59 ago)
Traffic statistics:
Input bytes : 0 0 bps
Output bytes : 2299853696 345934816 bps
Input packets: 0 0 pps
Output packets: 17967609 337827 pps
IPv6 transit statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Input errors:
Errors: 0, Drops: 0, Framing errors: 0, Runts: 0, Policed discards: 0, L3 incompletes: 0, L2 channel errors: 0, L2 mismatch timeouts: 0, FIFO errors: 0, Resource errors: 0
Output errors:
Carrier transitions: 0, Errors: 0, Drops: 0, Collisions: 0, Aged packets: 0, FIFO errors: 0, HS link CRC errors: 0, MTU errors: 0, Resource errors: 0
Egress queues: 8 supported, 4 in use
Queue counters: Queued packets Transmitted packets Dropped packets
0 best-effort 0 18302337 0
1 assured-forw 0 0 0
5 expedited-fo 0 0 0
7 network-cont 0 0 0
Queue number: Mapped forwarding classes
0 best-effort
1 assured-forwarding
5 expedited-forwarding
7 network-control
Active alarms : None
Active defects : None
MAC statistics: Receive Transmit
Total octets 0 2299853696
Total packets 0 17967609
Unicast packets 0 17967609
Broadcast packets 0 0
Multicast packets 0 0
CRC/Align errors 0 0
FIFO errors 0 0
MAC control frames 0 0
MAC pause frames 0 0
Oversized frames 0
Jabber frames 0
Fragment frames 0
Code violations 0
Autonegotiation information:
Negotiation status: Complete
Link partner:
Link mode: Full-duplex, Flow control: Symmetric, Remote fault: OK, Link partner Speed: 1000 Mbps
Local resolution:
Flow control: Symmetric, Remote fault: Link OK
Packet Forwarding Engine configuration:
Destination slot: 1
CoS information:
Direction : Output
CoS transmit queue Bandwidth Buffer Priority Limit
% bps % usec
0 best-effort 95 950000000 95 NA low none
7 network-control 5 50000000 5 NA low none
Interface transmit statistics: Disabled
Logical interface ge-1/0/10.0 (Index 69) (SNMP ifIndex 638) (Generation 138)
Flags: SNMP-Traps 0x0 Encapsulation: ENET2
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Local statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Transit statistics:
Input bytes : 0 0 bps
Output bytes : 0 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
Protocol eth-switch, Generation: 163, Route table: 0
Flags: Trunk-ModeThe Traffic statistics: field in this output shows that the egress traffic is ~400 Mpbs (345,934,816 bps). When a queue shaping of 30 Mbps is applied to the best-effort queue, you see the following output for the show interfaces ge-0/0/2 statistics and show class-of-service scheduler-map sched-map-be commands:
content_copy zoom_out_map
user@switch> show interfaces ge-0/0/2 statistics
Physical interface: ge-0/0/2, Enabled, Physical link is Up
Interface index: 239, SNMP ifIndex: 548, Generation: 242
Link-level type: Ethernet, MTU: 1514, Speed: Auto, Duplex: Auto, BPDU Error: None, MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled, Flow control: Enabled, Auto-negotiation: Enabled, Remote fault: Online,
Media type: Copper
Device flags : Present Running
Interface flags: SNMP-Traps Internal: 0x0
Link flags : None
CoS queues : 8 supported, 8 maximum usable queues
Hold-times : Up 0 ms, Down 0 ms
Current address: 00:23:9c:0b:ae:8d, Hardware address: 00:23:9c:0b:ae:8d
Last flapped : 2012-07-07 03:21:52 UTC (1d 18:29 ago)
Statistics last cleared: 2012-07-08 21:46:22 UTC (00:04:56 ago)
Traffic statistics:
Input bytes : 0 0 bps
Output bytes : 5376128896 30097712 bps
Input packets: 0 0 pps
Output packets: 42001003 29392 pps
IPv6 transit statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Input errors:
Errors: 0, Drops: 0, Framing errors: 0, Runts: 0, Policed discards: 0, L3 incompletes: 0, L2 channel errors: 0, L2 mismatch timeouts: 0, FIFO errors: 0, Resource errors: 0
Output errors:
Carrier transitions: 0, Errors: 0, Drops: 0, Collisions: 0, Aged packets: 0, FIFO errors: 0, HS link CRC errors: 0, MTU errors: 0, Resource errors: 0
Egress queues: 8 supported, 4 in use
Queue counters: Queued packets Transmitted packets Dropped packets
0 best-effort 0 41986978 57813642
1 assured-forw 0 0 0
5 expedited-fo 0 0 0
7 network-cont 0 0 0
Queue number: Mapped forwarding classes
0 best-effort
1 assured-forwarding
5 expedited-forwarding
7 network-control
Active alarms : None
Active defects : None
MAC statistics: Receive Transmit
Total octets 0 5376128896
Total packets 0 42001003
Unicast packets 0 42001003
Broadcast packets 0 0
Multicast packets 0 0
CRC/Align errors 0 0
FIFO errors 0 0
MAC control frames 0 0
MAC pause frames 0 0
Oversized frames 0
Jabber frames 0
Fragment frames 0
Code violations 0
Autonegotiation information:
Negotiation status: Complete
Link partner:
Link mode: Full-duplex, Flow control: Symmetric, Remote fault: OK, Link partner Speed: 1000 Mbps
Local resolution:
Flow control: Symmetric, Remote fault: Link OK
Packet Forwarding Engine configuration:
Destination slot: 1
CoS information:
Direction : Output
CoS transmit queue Bandwidth Buffer Priority Limit
% bps % usec
0 best-effort r r r NA low none
Interface transmit statistics: Disabled
Logical interface ge-1/0/10.0 (Index 69) (SNMP ifIndex 638) (Generation 138)
Flags: SNMP-Traps 0x0 Encapsulation: ENET2
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Local statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Transit statistics:
Input bytes : 0 0 bps
Output bytes : 0 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
Protocol eth-switch, Generation: 163, Route table: 0
Flags: Trunk-Mode
content_copy zoom_out_map
user@switch> show class-of-service scheduler-map sched-map-be
Scheduler map: sched-map-be, Index: 31271
Scheduler: voice-sched-queue-shap, Forwarding class: best-effort, Index: 64106
Transmit rate: remainder, Rate Limit: none, Buffer size: remainder,
Buffer Limit: none, Priority: low
Excess Priority: unspecified
Shaping rate: 30000000 bps
Drop profiles:
Loss priority Protocol Index Name
High non-TCP 1 <default-drop-profile>
High TCP 1 <default-drop-profile>Meaning
In the output for the show interfaces ge-0/0/2 statistics command, the Traffic statistics: field shows that the egress traffic is ~30 Mbps (30,097,712 bps). The output for the show class-of-service scheduler-map sched-map-be command, shows that a shaping rate of 30,000,000 bps (that is 30 Mbps) is applied to the best-effort queue.
