CBQoS子策略

Step 1

Router> enable

Enables privileged EXEC mode.

Step 2

Router# configure terminal

Enters global configuration mode.

Step 3 

Router(config)#  policy-map policy-name

Creates or specifies the name of the traffic policy and enters policy-map configuration mode.

Step 4

Router(config-pmap)#  class {class-name |class-default}

Specifies the name of a traffic class (previously created in the "Creating a Traffic Class" section) and enters policy-map class configuration mode.

Use one or more of the following commands to enable the specific QoS feature you want to use.

Step 5 

Router(config-pmap-c)# bandwidth {bandwidth-kbps | percent percent }

(Optional) Specifies a minimum bandwidth guarantee to a traffic class in periods of congestion. A minimum bandwidth guarantee can be specified in kbps or by a percentage of the overall available bandwidth.

Step 6 

Router(config-pmap-c)# fair-queue number-of-queues

(Optional) Specifies the number of queues to be reserved for a traffic class.

Step 7

Router (config-pmap-c)# police bps [burst-normal][burst-max] conform-actionaction exceed-actionaction [violate-action action]

(Optional) Configures traffic policing.

Step 8 

Router(config-pmap-c)# priority{bandwidth-kbps | percent percentage} [burst]

(Optional) Gives priority to a class of traffic belonging to a policy map.

Step 9 

Router(config-pmap-c)# queue-limit number-of-packets

(Optional) Specifies or modifies the maximum number of packets the queue can hold for a class configured in a policy map.

Step 10 

Router(config-pmap-c)# random-detect [dscp-based | prec-based]

(Optional) Enables Weighted Random Early Detection (WRED) or distributed WRED (DWRED).

Step 11 

Router(config-pmap-c)# set atm-clp

(Optional) Sets the cell loss priority (CLP) bit when a policy map is configured.

Step 12

Router(config-pmap-c)# set cos{cos-value | from-field [table table-map-name]}

(Optional) Sets the Layer 2 class of service (CoS) value of an outgoing packet.

Step 13 

Router(config-pmap-c)# set discard-class value

(Optional) Marks a packet with a discard-class value.

Step 14 

Router(config-pmap-c)# set [ip] dscp {dscp-value | from-field [table table-map-name]}

(Optional) Marks a packet by setting the differentiated services code point (DSCP) value in the type of service (ToS) byte.

Step 15

Router(config-pmap-c)# set fr-de

(Optional) Changes the discard eligible (DE) bit setting in the address field of a Frame Relay frame to 1 for all traffic leaving an interface.

Step 16

Router(config-pmap-c)# set precedence{precedence-value | from-field [table table-map-name]}

(Optional) Sets the precedence value in the packet header.

Step 17

Route(config-pmap-c)# set mpls experimental value

(Optional) Designates the value to which the MPLS bits are set if the packets match the specified policy map.

Step 18

Router (config-pmap-c)# set qos-group{group-id | from-field [table table-map-name]}

(Optional) Sets a QoS group identifier (ID) that can be used later to classify packets.

Step 19

Router(config-pmap-c)# service-policy policy-map-name

(Optional) Specifies the name of a traffic policy used as a matching criterion (for nesting traffic policies [hierarchical traffic policies] within one another).

Step 20

Router(config-pmap-c)# shape {average | peak } mean-rate [burst-size [excess-burst-size ]]

(Optional) Shapes traffic to the indicated bit rate according to the algorithm specified.

Step 21 

Router(config-pmap-c)# exit

(Optional) Exits policy-map class configuration mode.