Cisco Systems OL-4266-08 User Manual download pdf

CHAPTER

42-1

Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX

OL-4266-08

Configuring PFC QoS

This chapter describes how to configure quality of service (QoS) as implemented on the Policy Feature

Card (PFC) and Distributed Forwarding Cards (DFCs) on the Cisco 7600 series routers.

Note • For complete syntax and usage information for the commands used in this chapter, refer to the

Cisco 7600 Series Router Cisco IOS Command Reference at this URL:

http://www.cisco.com/univercd/cc/td/doc/product/core/cis7600/software/122sx/cmdref/index.htm

• For information about QoS and MPLS, see Chapter 43, “Configuring PFC3BXL or PFC3B Mode

MPLS QoS.”

• QoS on the Cisco 7600 series routers (PFC QoS) uses some Cisco IOS modular QoS CLI (MQC).

Because PFC QoS is implemented in hardware, it supports only a subset of the MQC syntax.

• The PFC3 does not support Network-Based Application Recognition (NBAR).

• With a Supervisor Engine 2, PFC2, and MSFC2, you can configure NBAR on Layer 3 interfaces

instead of PFC QoS:

–

The PFC2 provides hardware support for input ACLs on ports where you configure NBAR.

–

When PFC QoS is enabled, the traffic through ports where you configure NBAR passes through

the ingress and egress queues and drop thresholds.

–

When PFC QoS is enabled, the MSFC2 sets egress CoS equal to egress IP precedence in NBAR

traffic.

–

After passing through an ingress queue, all traffic is processed in software on the MSFC2 on

interfaces where you configure NBAR.

–

To configure NBAR, refer to this publication:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122t/122t8/dtnba

rad.htm

This chapter contains these sections:

• Understanding How PFC QoS Works, page 42-2

• PFC QoS Default Configuration, page 42-28

• PFC QoS Configuration Guidelines and Restrictions, page 42-49

• Configuring PFC QoS, page 42-55

• Common QoS Scenarios, page 42-112

• PFC QoS Glossary, page 42-122

1 2 3 4 5 6 ... 123 124

Summary of Contents

Page 1 - Configuring PFC QoS

CHAPTER42-1Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-0842Configuring PFC QoSThis chapter describes how to

Page 2 - Overview

42-10Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSUnderstanding How PFC

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42-100Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoSR

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42-101Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoSN

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42-102Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoSM

Page 6 - Component Overview

42-103Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoSN

Page 7 - DSCP-based

42-104Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoSW

Page 8 - PFC and DFC QoS Features

42-105Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoST

Page 9

42-106Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoSM

Page 10 - Egress PFC QoS

42-107Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoSM

Page 11 - Internal DSCP Values

42-108Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoSA

Page 12 - PFC QoS Egress Port Features

42-109Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoST

Page 13 - Egress CoS Values

42-11Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSUnderstanding How PFC

Page 14 - Egress PFC QoS Interfaces

42-110Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoSS

Page 15 - Marking on Egress OSM Ports

42-111Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoSC

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42-112Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSCommon QoS Scenarios

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Page 18

42-114Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSCommon QoS Scenarios

Page 19 - Policers

42-115Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSCommon QoS Scenarios

Page 20 - Aggregate Policers

42-116Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSCommon QoS Scenarios

Page 21 - Microflow Policers

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Page 24 - Ingress Queue Types

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Page 25 - Egress Queue Types

42-120Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSCommon QoS Scenarios

Page 26 - Module to Queue Type Mappings

42-121Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSCommon QoS Scenarios

Page 27

42-122Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSPFC QoS GlossaryPFC

Page 28 - PFC QoS Default Configuration

42-123Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSPFC QoS Glossary• Ma

Page 29 - PFC QoS Global Settings

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Page 30 - Transmit-Queue Limit s

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Page 31 - Bandwidth Allocation Ratios

42-14Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSUnderstanding How PFC

Page 32 - 1q4t Receive Queues

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Page 33 - 1p1q0t Receive Queues

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Page 34 - 1p1q8t Receive Queues

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Page 35 - 1q8t Receive Queues

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Page 36 - 2q8t Receive Queues

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Page 37 - 8q4t Receive Queues

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Page 41 - 2q2t Transmit Queues

42-23Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSUnderstanding How PFC

Page 42 - 1p2q2t Transmit Queues

42-24Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSUnderstanding How PFC

Page 43 - 1p3q8t Transmit Queues

42-25Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSUnderstanding How PFC

Page 44 - 1p7q4t Transmit Queues

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Page 47 - 1p7q8t Transmit Queues

42-29Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSPFC QoS Default Confi

Page 48 - 1p3q1t Transmit Queues

42-3Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSUnderstanding How PFC

Page 49 - 1p2q1t Transmit Queues

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Page 50 - General Guidelines

42-31Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSPFC QoS Default Confi

Page 51 - PFC3 Guidelines

42-32Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSPFC QoS Default Confi

Page 52 - PFC2 Guidelines

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Page 56 - Enabling PFC QoS Globally

42-37Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSPFC QoS Default Confi

Page 57 - Enabling Ignore Port Trust

42-38Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSPFC QoS Default Confi

Page 58 - Enabling Queueing-Only Mode

42-39Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSPFC QoS Default Confi

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Page 64 - Configuring a PFC QoS Policy

42-44Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSPFC QoS Default Confi

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Page 66 - Configuring MAC ACLs

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Page 70 - Configuring a Class Map

42-5Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSUnderstanding How PFC

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Page 73 - Configuring a Policy Map

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Page 86 - Configuring DSCP Value Maps

42-64Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoSNo

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Page 108 - OL-4266-08

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Page 112 - Common QoS Scenarios

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Page 120 - • Class map commands:

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Page 122 - PFC QoS Glossary

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