Cisco Systems OL-4266-08 Uživatelský manuál stáhnout 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

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Strany 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

Strany 2 - Overview

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

Strany 3

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

Strany 4

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

Strany 5

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

Strany 6 - Component Overview

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

Strany 7 - DSCP-based

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

Strany 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

Strany 9

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

Strany 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

Strany 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

Strany 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

Strany 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

Strany 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

Strany 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

Strany 16

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

Strany 17

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Strany 18

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

Strany 19 - Policers

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

Strany 20 - Aggregate Policers

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

Strany 21 - Microflow Policers

42-117Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSCommon QoS Scenarios

Strany 22

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Strany 23

42-119Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSCommon QoS Scenarios

Strany 24 - Ingress Queue Types

42-12Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSUnderstanding How PFC

Strany 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

Strany 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

Strany 27

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

Strany 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

Strany 29 - PFC QoS Global Settings

42-124Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSPFC QoS Glossary

Strany 30 - Transmit-Queue Limit s

42-13Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSUnderstanding How PFC

Strany 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

Strany 32 - 1q4t Receive Queues

42-15Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSUnderstanding How PFC

Strany 33 - 1p1q0t Receive Queues

42-16Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSUnderstanding How PFC

Strany 34 - 1p1q8t Receive Queues

42-17Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSUnderstanding How PFC

Strany 35 - 1q8t Receive Queues

42-18Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSUnderstanding How PFC

Strany 36 - 2q8t Receive Queues

42-19Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSUnderstanding How PFC

Strany 37 - 8q4t Receive Queues

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Strany 40

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Strany 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

Strany 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

Strany 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

Strany 44 - 1p7q4t Transmit Queues

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Strany 46

42-28Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSPFC QoS Default Confi

Strany 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

Strany 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

Strany 49 - 1p2q1t Transmit Queues

42-30Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSPFC QoS Default Confi

Strany 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

Strany 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

Strany 52 - PFC2 Guidelines

42-33Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSPFC QoS Default Confi

Strany 53

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Strany 54

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Strany 55

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Strany 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

Strany 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

Strany 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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Strany 63

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Strany 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

Strany 65

42-45Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSPFC QoS Default Confi

Strany 66 - Configuring MAC ACLs

42-46Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSPFC QoS Default Confi

Strany 67

42-47Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSPFC QoS Default Confi

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Strany 69

42-49Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSPFC QoS Configuration

Strany 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

Strany 71

42-50Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSPFC QoS Configuration

Strany 72

42-51Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSPFC QoS Configuration

Strany 73 - Configuring a Policy Map

42-52Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSPFC QoS Configuration

Strany 74

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42-55Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoSIP

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42-56Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoS•

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42-57Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoS

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42-58Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoSCo

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Strany 83

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Strany 84

42-62Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoSWh

Strany 85

42-63Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoS•

Strany 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

Strany 87

42-65Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoSPF

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42-69Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoS•

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Strany 108 - OL-4266-08

42-84Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoSIn

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Strany 111

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Strany 112 - Common QoS Scenarios

42-88Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoSWh

Strany 113

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Strany 119

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Strany 120 - • Class map commands:

42-95Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SXOL-4266-08Chapter 42 Configuring PFC QoSConfiguring PFC QoSTo

Strany 121

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Strany 122 - PFC QoS Glossary

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Strany 123

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Strany 124

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