QoS Function Configuration Commands
Table of Contents
Table of Contents
Chapter 1 QoS Service Configuration Commands ............................................................................ 1
1.1 QoS Configuration Commands............................................................................................. 1
1.1.1 cos default .................................................................................................................. 1
1.1.2 cos map...................................................................................................................... 2
1.1.3 scheduler wrr bandwidth ............................................................................................ 3
1.1.4 scheduler policy.......................................................................................................... 3
1.1.5 policy-map .................................................................................................................. 4
1.1.6 classify........................................................................................................................ 5
1.1.7 action.......................................................................................................................... 5
1.1.8 qos policy ................................................................................................................... 6
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QoS Function Configuration Commands
Chapter 1 QoS Service Configuration Commands
1.1 QoS Configuration Commands
QoS Configuration Commands include:
cos default
cos map
scheduler wrr bandwidth
scheduler policy
policy-map
classify
action
qos policy
1.1.1 cos default
description
cos default cos
no cos default
To configure the default value of CoS, use the cos default command. To disable the
configuration, use the no form of this command.
parameter
parameter description
cos Default cos value. The range is 0-7
default
The default CoS value is 0
instruction
Layer 2 interface configuration mode
example
Set the CoS value of no-label frame received on ge0/1 interface as 4
Switch(config)# interface gigabitethernet0/1
Switch(config-if)# cos default 4
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QoS Function Configuration Commands
1.1.2 cos map
description
cos map quid cos1..cosn
no cos map
To set the CoS priority queues, use the cos map command.
parameter
parameter description
quid ID of CoS priority queues. The range is 1 to 8
cos1..cosn CoS value defined by IEEE802.1p. The range is 0 to 7
default
CoS value Priority queues
0 1
1 2
2 3
3 4
4 5
5 6
6 7
7 8
instruction
Layer 2 interface configuration mode and the global configuration mode
Using this command in the global configuration mode will affect all CoS priority queue;
while configuring this command in layer 2 interface command will only affect CoS
priority queue of the interface.
example
The following example maps CoS 0-2 to CoS priority queue 1and maps CoS 3 to
priority queue 2:
Switch(config-if)# cos map 1 0 1 2
Switch(config-if)# cos map 2 3
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QoS Function Configuration Commands
1.1.3 scheduler wrr bandwidth
description
scheduler wrr bandwidth weight1...weightn
no scheduler wrr bandwidth
To configure cos priotiry queue bandwidth, use the scheduler wrr bandwidth
command
parameter
parameter description
weight1…weight8 WRR 8 CoS priority queue metrics the range is 1to 5。
default
All CoS priority queue metrics must be the same, the eight CoS priority queue metrics
are all 12.
instruction
It works in the global configuration mode
Using this command will affect the priority queue broadband of all interfaces. It enables
only when queue debug mode is configured wrr. It defines the CoS priority queue
broadband metrics when wrr debug policy is applied.
example
Configure the eight CoS priority queue metrics as 1，2，3，4，5，6，7，8
Switch(config)# scheduler wrr bandwidth 1，2，3，4，5，6，7，8
1.1.4 scheduler policy
description
scheduler policy { sp | wrr }
no scheduler policy
To set CoS priority queue debug policy, use the scheduler policy command.
parameter
parameter description
sp Use the sp debug stratefgy.
wrr Use the wrr debug strategy
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QoS Function Configuration Commands
default
use SP
instruction
the global configuration mode
After configure the command, the interface send debug mode is configured to specified
value.
example
Configure interface send debug mode as wrr.
Switch(config)#scheduler policy wrr
1.1.5 policy-map
description
policy-map name
no policy-map name
To set QOS policy-map, use the policy-map command
parameter
Parameter description
name Name of the policy map , the value range is 1 to 16 characters
default
none
instruction
the global configuration mode
After inputting this command, the system will enter QoS policy mapping configuration
mode. There are following commands in this mode:
classify: it is used to configure QoS flow.
description：it is used to describe QoS policy mapping.
exit：it is used to quit from QoS policy mapping configuration mode.
no：it is used to cancel the command that formerly inputs.
action：it is used to define QoS action.
example
The following example shows how to configure QoS policy map:
Switch(config)# policy-map myqos
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QoS Function Configuration Commands
1.1.6 classify
description
classify {ip access-group access-list-name | dscp dscp-value | mac access-group
mac-access-name | vlan vlan-id | cos cos | any }
no classify {ip access-group access-list-name | dscp dscp-value | mac
access-group mac-access-name | vlan vlan-id | cos cos | any }
To configure the matching data traffic of QoS policy, use the classify command
Parameter Description
ip access-group Configure the matching IP access list name, the range is 1 to 16
access-list-name characters
dscp dscp-value diffserv field in IP packet. The valid range is 0 to 63
mac access-group Configure the matching MAC access list name. the valid range is
mac-access-name 1 to 16 characters
vlan vlan-id Configure the matching VLAN, the valid range is 1 to 4094
cos cos Configure the matching COS value, the valid range is 0 to 7
any match any data packets
default
match any data packets
instruction
QoS policy map configuration mode
All data traffic in one QoS policy map must have the identical mask value, interface
number in the ip access-list must be definite rather than a scope.
Only one item of rule can be included in the ip access list that used to match data flow,
or the configuration fails. When the action (permit or deny) of the rule is permit, this rule
is used to separate data flow; when the action of the rule is deny, this rule has no effect,
that is, it will not be used to match data flow.
example
Switch(config-qos)# classify ip access-group ipacl1 cos 3
1.1.7 action
description
action [no-match] {bandwidth max-band | cos cos-value | dscp dscp-value | redirect
interface-id | drop | stat | monitor }
To configure the matching data traffic policy of QoS policy map, use the action
command
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QoS Function Configuration Commands
parameter
paramter description
no-match Influence all the traffic that do not meet the demand
bandwidth max-band maximum bandwidth to a class ，the range is 1 to 1000kbps。
dscp dscp-value Define the dscp field of the matching traffic as dscp-value, the
range is 0 to 63
cos cos-value Define cos field of the matching traffic as cos-value, the range is
0 to 7
redirect interface-id redirect the exit of the matching traffic
drop drops the configured packets
stat Switch stat information of the related matching traffic
monitor 将 该 数 据 包 发 送 到 镜 像 端 口 。 Send the packets to monitor
interface
default
none
instruction
QoS policy map configuration mode.
One QoS policy mapping can only configures one kind of policy. Bandwidth and stat
can only influence the match packets, and the above actions can be enabled at the
same time, if the action is empty, then it means to forward, which means allowing the
data traffic to pass.
example
Switch(config-qos)# action redirect interface g0/1
1.1.8 qos policy
description
[no] qos policy name { ingress|egress}
To configure the QoS policy on interface, use the qos policy command.
paramter
parameter description
name Name of QoS policy maps
ingress Affect the entrance
egress Affect the exit
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QoS Function Configuration Commands
deault
none
instruction
layer 2 interface configuration mode
example
Apply the QoS policy named pmap on the f0/1 interface
Switch(config)# interface Gigaethernet0/1
Switch(config-if)# qos policy pmap ingress
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