Reference Guide

Quality of Service | 537

Quality of Service

Quality of Service (QoS) is supported on platforms: c e s

Differentiated service is accomplished by classifying and queuing traffic, and assigning priorities to those

queues.

The C-Series traffic has eight queues per port. Four queues are for data traffic and four are for control

traffic. All queues are serviced using the Deficit Round Robin scheduling algorithm. You can only manage

queuing prioritization on egress.

Table 30-1. FTOS Support for Port-based, Policy-based, and Multicast QoS Features

Feature Platform Direction

Port-based QoS Configurations c e s Ingress + Egress

Set dot1p Priorities for Incoming Traffic c e s Ingress

Honor dot1p Priorities on Ingress Traffic c e s

Configure Port-based Rate Policing c e s

Configure Port-based Rate Limiting e Egress

Configure Port-based Rate Shaping c e s

Policy-based QoS Configurations c e s Ingress + Egress

Classify Traffic c e s Ingress

Create a Layer 3 class map c e s

Set DSCP values for egress packets based on flow c e s

Create a Layer 2 class map c e s

Create a QoS Policy c e s Ingress + Egress

Create an input QoS policy c e s Ingress

Configure policy-based rate policing c e s

Set a DSCP value for egress packets c e s

Set a dot1p value for egress packets c e s