Reference Guide

808 | Quality of Service
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% Info: To set the specified DSCP value 34 (100-010 b) the QoS policy must be mapped to
queue 4 (100 b).
FTOS(conf-qos-policy-in)#show config
!
qos-policy-input my-input-qos-policy
set ip-dscp 34
FTOS(conf-qos-policy-in)#end
FTOS#
Set a dot1p value for egress packets
Set a dot1p value for egress packets using the command set mac-dot1p from QOS-POLICY-IN mode.
Create an output QoS policy
To create an output QoS policy:
1. Create an output QoS policy using the command
qos-policy-output from CONFIGURATION mode.
2. Once you configure an output QoS policy, do one or more of the following
• Configure policy-based rate limiting
• Configure policy-based rate shaping
• Allocate bandwidth to queue
• Specify WRED drop precedence
Configure policy-based rate limiting
Configure policy-based rate limiting is supported only on platform e
Policy-based rate limiting is configured the same way as port-based rate limiting except that the command
from QOS-POLICY-OUT mode is
rate-limit rather than rate limit as it is in INTERFACE mode.
Configure policy-based rate shaping
Rate shape egress traffic using the command rate-shape from QOS-POLICY-OUT mode. Output QoS
policy can be applied to an output policy map with a policy aggregate or to an specific queue. Per queue
rate shaping is supported on C-Series and S-Series only; refer to Create Output Policy Maps.
FTOS#conf t
FTOS(conf)#qos-policy-output QosShape
FTOS(conf-qos-policy-out)# rate-shape 4 10
FTOS(conf-qos-policy-out)#show config
!
qos-policy-output
QosShape rate-shape 4 10
FTOS(conf-qos-policy-out)#exit