Reference Guide
Bandwidth allocation
You can allocate relative bandwidth to limit large ows and prioritize smaller ows. Allocate the relative amount of bandwidth to nonpriority
queues when priorities queues are consuming maximum link bandwidth.
Each egress queue of an interface can be scheduled as per Weighted Decit Round Robin (WDRR) or by strict-priority (SP), which are
both mutually exclusive. If the
bandwidth percent command is present, you cannot congure the priority command as it is used
to assign bandwidth to a queue.
1 Create a class-map of type queuing and congure a name for the class-map in CONFIGURATION mode.
class-map type queuing class-map-name
2 Apply the match criteria for the QoS group in CLASS-MAP mode.
qos-group queue-number
3 Save the conguration and return to CONFIGURATION mode.
do commit
exit
4 Create a policy-map of type queuing and congure a policy-map name in CONFIGURATION mode.
policy-map type queuing policy-map-name
5 Congure a queuing class in POLICY-MAP mode.
class class-name
6 Assign a bandwidth percent (1 to 100) to nonpriority queues in POLICY-MAP-CLASS-MAP mode.
bandwidth percent value
7 Save the conguration.
do commit
Congure bandwidth allocation
OS10(config)# class-map type queuing solar
OS10(conf-cmap-queuing)# match qos-group 5
OS10(conf-cmap-queuing)# do commit
OS10(conf-cmap-queuing)# exit
OS10(config)# policy-map lunar
OS10(config)# policy-map type queuing lunar
OS10(conf-pmap-queuing)# class solar
OS10(conf-pmap-c-que)# bandwidth percent 80
OS10(conf-pmap-c-que)# do commit
View class-map
OS10(conf-cmap-queuing)# do show class-map
Class-map (queuing): solar (match-any)
Match: qos-group 5
View policy-map
OS10(conf-pmap-c-que)# do show policy-map
Service-policy (queuing) output: solar
Class-map (queuing): lunar
bandwidth percent 80
Service-policy rate-shaping
Rate-shaping buers trac exceeding the specied rate until the buer is exhausted. Trac transmit rates that exceed the congured
rate-shape value causes the system to buer the exceeding trac. This will use all of the buers assigned to that interface or queue
combination.
1 Enter the policy-map type as queuing and congure a policy-map name in CONFIGURATION mode.
policy-map type queuing policy-map-name
Quality of service
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