Page is loading ...
Alcatel-Lucent
Service Access Switch| Release 8.0 Rev.04
7 2 1 0 S A S D , E , K O S
Q u a l i t y o f S e r v i c e G u i d e
3HE10 379AAACTQZZA
3HE10379AAACTQZZA
Alcatel-Lucent – Proprietary & Confidential
Contains proprietary/trade secret information which is the property of Alcatel-Lucent. Not to be made available
to, or copied or used by anyone who is not an employee of Alcatel-Lucent except when there is a valid nondisclosure
agreement in place which covers such information and contains appropriate non-disclosure and
limited use obligations.
Copyright 2015 © Alcatel-Lucent. All rights reserved.All specifications, procedures, and information in this document are subject to change and revision at any time
without notice. The information contained herein is believed to be accurate as of the date of publication. AlcatelLucent
All specifications, procedures, and information in this document are subject to change and revision at any
time without notice. The information contained herein is believed to be accurate as of the date of
publication. Alcatel-Lucent provides no warranty, express or implied, regarding its contents. Users are fully
responsible for application or use of the documentation.
Alcatel, Lucent, Alcatel-Lucent and the Alcatel-Lucent logo are trademarks of Alcatel-Lucent. All other
trademarks are the property of their respective owners.
Copyright 2015 Alcatel-Lucent.
All rights reserved.
Disclaimers
Alcatel-Lucent products are intended for commercial uses. Without the appropriate network design
engineering, they must not be sold, licensed or otherwise distributed for use in any hazardous environments
requiring fail-safe performance, such as in the operation of nuclear facilities, aircraft navigation or
communication systems, air traffic control, direct life-support machines, or weapons systems, in which the
failure of products could lead directly to death, personal injury, or severe physical or environmental
damage. The customer hereby agrees that the use, sale, license or other distribution of the products for any
such application without the prior written consent of Alcatel-Lucent, shall be at the customer's sole risk.
The customer hereby agrees to defend and hold Alcatel-Lucent harmless from any claims for loss, cost,
damage, expense or liability that may arise out of or in connection with the use, sale, license or other
distribution of the products in such applications.
This document may contain information regarding the use and installation of non-Alcatel-Lucent products.
Please note that this information is provided as a courtesy to assist you. While Alcatel-Lucent tries to ensure
that this information accurately reflects information provided by the supplier, please refer to the materials
provided with any non-Alcatel-Lucent product and contact the supplier for confirmation. Alcatel-Lucent
assumes no responsibility or liability for incorrect or incomplete information provided about non-Alcatel-
Lucent products.
However, this does not constitute a representation or warranty. The warranties provided for Alcatel-Lucent
products, if any, are set forth in contractual documentation entered into by Alcatel-Lucent and its
customers.
This document was originally written in English. If there is any conflict or inconsistency between the
English version and any other version of a document, the English version shall prevail.
7210 SAS D, E, K OS Quality of Service Guide Page 3
T
ABLE
OF
C
ONTENTS
Preface
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Getting Started
Alcatel-Lucent 7210 SAS-Series Services Configuration Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
QoS Policies
QoS Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Overview of QoS Policies on 7210 SAS-D and 7210 SAS-E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Overview of QoS Policies on 7210 SAS-K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Service and Network QoS Policies on 7210 SAS-D, 7210 SAS-E and 7210 SAS-K. . . . . . . . . . . .29
Network QoS Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Network Queue QoS Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Meter Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Meter ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Committed Information Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Peak Information Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Adaptation Rule for Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Adaptation Rule for Meters in 7210 SAS-E Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Adaptation Rule for Meters in 7210 SAS-D Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Committed Burst Size (For Meters/Policers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Maximum Burst Size (For Meters/Policers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Meter Counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Meter Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Color-Aware and Color-blind Policing/Metering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
QoS Overrides. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Configuration guidelines of QoS Override . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Configuring Meter Override parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Queue Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Queue ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Committed Information Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Peak Information Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Adaptation Rule for Queues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Committed Burst Size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Maximum Burst Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Queue Counters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Service Ingress QoS Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Service Ingress QoS policies on 7210 SAS-D and 7210 SAS-E . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Service Ingress QoS policies on 7210 SAS-K. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Service Ingress Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Service Ingress Classification on 7210 SAS-D and 7210 SAS-E. . . . . . . . . . . . . . . . . . . . . . . . . . .51
Service Ingress Classification – IP and Mac Packet fields. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Service Ingress Classification on 7210 SAS-K - IP and MAC Packet fields. . . . . . . . . . . . . . . . . . .54
Service Ingress Classification on 7210 SAS-K. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
Hierarchical Ingress Policing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Service Egress QoS Policies on 7210 SAS-K. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Page 4 7210 SAS D, E, K OS Quality of Service Guide
Table of Contents
Access Egress QoS Policies on 7210 SAS-D and 7210 SAS-E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Buffer Pools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Buffer Pools on 7210 SAS-E and 7210 SAS-D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Buffer pools on 7210 SAS-K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Ring and Non-Ring Buffer pool on 7210 SAS-K. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
Configuration Guidelines for CBS and MBS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
Slope Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
RED Slopes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Operation and Configuration for 7210 SAS-E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Operation and Configuration for 7210 SAS-D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Simplified overview of RED for 7210 SAS-D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
Tuning the Shared Buffer Utilization Calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
Slope Policy Parameters for 7210 SAS-E devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Slope Policy Parameters for 7210 SAS-D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Slope Policy Parameters for 7210 SAS-K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74
Schedulers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
Port Scheduler Policies on 7210 SAS-D, E. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
Scheduler Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
Scheduler on 7210 SAS-K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
CPU Queues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
CPU Queues on 7210 SAS-D, SAS-E. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
CPU Queues on SAS-K. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
Egress Port Rate Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
Forwarding Classes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
Forwarding-Class To Queue ID Mapping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
FC to Queue ID mapping for 7210 SAS-E and 7210 SAS-D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
FC to Queue ID mapping for 7210 SAS-K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
QoS Policy Entities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
Configuration Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
Discard Eligibility Indicator (DEI) based Classification and Marking
DEI based Classification on 7210 SAS-D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
DEI based marking on 7210 SAS-D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
Configuration Guidelines for 7210 SAS-D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86
DEI based Classification on 7210 SAS-K. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87
DEI based marking on 7210 SAS-K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88
Port Level Egress Rate-Limiting
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
Effect of Port Level Rate-Limiting on Access Uplink Queue Functionality . . . . . . . . . . . . . . . . . . . . . .91
Basic Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92
Modifying Port Level Egress-Rate Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93
Removing Port Level Egress-Rate Command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
Default Egress-Rate Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
Port Level Egress-Rate Command Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95
Frame Based Accounting
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102
7210 SAS D, E, K OS Quality of Service Guide Page 5
Table of Contents
Frame Based Accounting on 7210 SAS-E and 7210 SAS-D . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102
Effects of Enabling Ingress Frame Based Accounting on Ingress Meter Functionality on 7210 SAS-E and
7210 SAS-D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102
Effects of Enabling Egress Frame Based Accounting on Access Uplink Queue Functionality on 7210 SAS-
E and 7210 SAS-D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102
Frame Based Accounting and Accounting and Statistics on 7210 SAS-E and 7210 SAS-D. . . . .103
Frame Based Accounting on 7210 SAS-K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103
Basic Configurations on 7210 SAS-E and 7210 SAS-D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104
Enabling and Disabling Frame-Based Accounting on 7210 SAS-E and 7210 SAS-D . . . . . . . . . . . .105
Frame Based Accounting Command Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107
Configuration Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108
Show Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109
Network QoS Policies
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116
Normal QoS Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118
DSCP Marking CPU Generated Traffic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119
Default DSCP Mapping Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121
Basic Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122
Create a Network QoS Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122
Configuring Network policy (type - port) for Access-uplink Mode. . . . . . . . . . . . . . . . . . . . . . . . . .124
Configuration of DSCP and Dot1p classification policies on 7210 SAS-K . . . . . . . . . . . . . . . . . . .125
Default Network Policy Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126
Service Management Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134
Deleting QoS Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134
Remove a Policy from the QoS Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135
Copying and Overwriting Network Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135
Editing QoS Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136
Resource Allocation for Network QoS policy on 7210 SAS-D and 7210 SAS-E. . . . . . . . . . . . . . . . .137
Resource Allocation for Network QoS policy for 7210 SAS-K. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138
Network QoS Policies Resource Usage Examples for 7210 SAS-D and 7210 SAS-E . . . . . . . . .139
Network QoS Policy Command Reference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .147
Network Queue QoS Policies
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .194
Basic Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .195
Create a Network Queue QoS Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .195
Applying Network Queue Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .197
Ethernet Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .197
Default Network Queue Policy Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .198
Service Management Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .203
Deleting QoS Policies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .203
Copying and Overwriting QoS Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .204
Editing QoS Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .206
Network Queue QoS Policy Command Reference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .207
Service Ingress QoS Policies
Overview of service ingress policy on 7210 SAS-D and 7210 SAS-E . . . . . . . . . . . . . . . . . . . . . . . . . . .226
Overview of service ingress policy on 7210 SAS-K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .227
Page 6 7210 SAS D, E, K OS Quality of Service Guide
Table of Contents
Configuration Guidelines for SAP ingress Policy for 7210 SAS-K. . . . . . . . . . . . . . . . . . . . . . . . . . . .227
Default SAP Ingress Policy on 7210 SAS-D and 7210 SAS-E. . . . . . . . . . . . . . . . . . . . . . . . . . . .229
Default SAP Ingress Policy for 7210 SAS-K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .230
SAP Ingress Policy Defaults for 7210 SAS-D, E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .232
SAP Ingress Policy Defaults for 7210 SAS-K. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .233
Use of Index file by SAP QoS Ingress policy for 7210 SAS-D, 7210 SAS-E. and 7210 SAS-K . .233
Service Ingress Meter Selection Rules for 7210 SAS-D and E . . . . . . . . . . . . . . . . . . . . . . . . . . .236
Service Ingress QoS Policy Configuration Considerations for 7210 SAS-D, E . . . . . . . . . . . . . . .239
Resource Allocation for Service Ingress QoS policy classification rules for 7210 SAS-D and E . . . .240
Resource Allocation for Service Ingress QoS policy classification rules for 7210 SAS-K . . . . . . .242
Computation of SAP ingress classification and meter resources used per SAP ingress policy for 7210 SAS-
D and E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .245
Basic Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .249
Create Service Ingress QoS Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .249
Service Ingress QoS Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .250
Applying Service Ingress Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .278
Service Management Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .280
Deleting QoS Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .280
Remove a QoS Policy from Service SAP(s). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .280
Copying and Overwriting QoS Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .281
Remove a Policy from the QoS Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .282
Editing QoS Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .282
Service SAP QoS Policy Command Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .283
Access Egress QoS Policies
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .340
Basic Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .340
Modifying Access Egress QoS Queues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .341
Applying Access Egress QoS Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .342
Default Access Egress QoS Policy Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .343
Deleting QoS Policies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .347
Removing a Policy from the QoS Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .347
Access Egress QoS Policy Command Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .349
Service Egress Policies
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .370
Configuration Guidelines for SAP Egress Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .371
Basic Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .373
Create a SAP Egress Policy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .373
Editing QoS Policies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .374
Service Egress Policy Command Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .375
Schedulers on 7210 SAS-K
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .392
QoS Port Scheduler Policies
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .396
7210 SAS D, E, K OS Quality of Service Guide Page 7
Table of Contents
Configuring Port Scheduler Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .396
Basic Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .397
Creating a QoS Port Scheduler Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .398
Service Management Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .400
Copying and Overwriting Port Scheduler Policies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .400
Editing QoS Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402
QoS Port Scheduler Policy Command Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .403
Slope QoS Policies
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Overview of Buffer Pools on 7210 SAS-E and 7210 SAS-D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Configuration Guidelines for 7210 SAS-D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Overview of Buffer pools and Slope policies on 7210 SAS-K. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Basic Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Create a Slope QoS Policy for 7210 SAS-E. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Create a Slope QoS Policy for 7210 SAS-D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Create a Slope QoS Policy for 7210 SAS-K. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Applying Slope Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Default Slope Policy Values for 7210 SAS-E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Default Slope Policy Values for 7210 SAS-D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Default Slope Policy Values for 7210 SAS-K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Deleting QoS Policies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Remove a Policy from the QoS Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Copying and Overwriting QoS Policies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Editing QoS Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Slope QoS Policy Command Reference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Remark Policies for 7210 SAS-K devices
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Configuration Guideline for 7210 SAS-K. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Basic Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Creating a Remark Policy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Editing QoS Policies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Remark Policy Command Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
Standards and Protocol Support
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Index
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Page 8 7210 SAS D, E, K OS Quality of Service Guide
Table of Contents
7210 SAS D, E, K OS Quality of Service Guide Page 9
L
IST
OF
T
ABLES
Getting Started
Table 1: Configuration Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
QoS Policies
Table 2: QoS Policy Types and Descriptions for 7210 SAS-D, E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Table 4: QoS Policy Types and Descriptions for 7210 SAS-K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Table 5: Default Network QoS Policy Egress Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Table 6: Default Network QoS Policy Dot1p to FC Mapping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Table 7: Default Network Queue Policy Definition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Table 8: Administrative Rate Example for 7210 SAS-E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Table 9: Supported Hardware Rates and CIR/PIR Values for 7210 SAS-D and E devices . . . . . . . . . . .43
Table 10: Default CBS and MBS Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Table 11: Default Service Ingress Policy ID 1 Definition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Table 12: Default Service Ingress Policy ID 1 Definition for 7210 SAS-K. . . . . . . . . . . . . . . . . . . . . . . . . .51
Table 13: Service Ingress QoS Policy IP Match Criteria for 7210 SAS-D and SAS-E . . . . . . . . . . . . . . . .53
Table 14: Service Ingress QoS Policy IPv6 Match Criteria for 7210 SAS-D and 7210 SAS-E. . . . . . . . . .53
Table 15: Service Ingress QoS Policy MAC Match Criteria for 7210 SAS-D and SAS-E . . . . . . . . . . . . . .53
Table 16: MAC Match Ethernet Frame Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Table 17: MAC Match Criteria Frame Type Dependencies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Table 18: Service Ingress QoS Policy IP Match Criteria for 7210 SAS-K. . . . . . . . . . . . . . . . . . . . . . . . . .55
Table 19: Service Ingress QoS Policy IPv6 Match Criteria for 7210 SAS-K. . . . . . . . . . . . . . . . . . . . . . . .55
Table 20: Service Ingress QoS Policy MAC Match Criteria for 7210 SAS-K . . . . . . . . . . . . . . . . . . . . . . .55
Table 21: Lists the criteria that can be matched for the various MAC frame types. . . . . . . . . . . . . . . . . . .55
Table 22: MAC Match Criteria Frame Type Dependencies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
Table 23: Default Service Egress Policy ID 1 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Table 24: Default Access Egress Policy ID 1 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
Table 25: TAF Impact on Shared Buffer Average Utilization Calculation . . . . . . . . . . . . . . . . . . . . . . . . . .70
Table 26: Default Slope Policy Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Table 27: Drop Rate Value to Percent Mapping Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Table 28: Default slope policy definition for 7210 SAS-D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74
Table 29: Default slope policy definition for 7210 SAS-K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Table 30: Minimum and Maximum Bandwidth Meters Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
Table 31: Forwarding Classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
Table 32: Forwarding Class to Queue-ID Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
Network QoS Policies
Table 33: DSCP and Dot1p Marking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119
Table 34: Network Policy Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126
Table 35: Default Network QoS Policy Dot1p to FC Mapping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127
Table 36: Show QoS Network Output Fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179
Network Queue QoS Policies
Table 37: Network Queue Policy Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .198
Table 38: Network Queue Labels and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .219
Page 10 7210 SAS D, E, K OS Quality of Service Guide
List of Tables
Service Ingress QoS Policies
Table 39: SAP Ingress Policy Defaults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .232
Table 40: SAP Ingress Policy Defaults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .233
Access Egress QoS Policies
Table 41: Access Egress Default Policy Details. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .343
Slope QoS Policies
Table 1: Slope behavior table (applicable to 7210 SAS-D). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Table 2: Slope Policy Defaults for 7210 SAS-E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Table 3: Slope Policy Defaults for 7210 SAS-D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Table 4: Default Slope Policy for 7210 SAS-K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Table 5: Show QoS Slope Policy Output Fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Table 6: Show QoS Slope Policy Output Fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Remark Policies for 7210 SAS-K devices
Table 7: Summary of remark policy and attachment points for 7210 SAS-K . . . . . . . . . . . . . . . . . . . . . .54
7210 SAS D, E, K OS Quality of Service Guide Page 11
L
IST
OF
F
IGURES
QoS Policies
Figure 1: 7210 SAS-D, E Service and Network Traffic Types and QoS model . . . . . . . . . . . . . . . . . . . .29
Figure 2: 7210 SAS- K Service and Network Traffic Types and QoS model . . . . . . . . . . . . . . . . . . . . . .29
Figure 3: Traffic Policing and Queuing Model for Forwarding Classes . . . . . . . . . . . . . . . . . . . . . . . . . .48
Figure 4: Traffic Queuing Model for Forwarding Classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Figure 5: RED Slope Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
Schedulers on 7210 SAS-K
Figure 6: Scheduler in 7210 SAS-K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .393
Page 12 7210 SAS D, E, K OS Quality of Service Guide
List of Figures
7210 SAS D, E, K OS Quality of Service Guide Page 13
Preface
About This Guide
This guide describes Quality of Service (QoS) provided by the 7210 SAS-D, E,
and K platforms and presents examples to configure and implement various tests
and presents examples to configure and implement various protocols and services.
On 7210 SAS devices, not all the CLI commands are supported on all the
platforms and in all the modes. In many cases, the CLI commands are mentioned
explicitly in this document. In other cases, it is implied and easy to know the CLIs
that are not supported on a particular platform.
This document is organized into functional chapters and provides concepts and
descriptions of the implementation flow, as well as Command Line Interface
(CLI) syntax and command usage.
Audience
This manual is intended for network administrators who are responsible for
configuring the 7210 SAS-Series routers. It is assumed that the network
administrators have an understanding of networking principles and
configurations. Protocols, standards, and services described in this manual include
the following:
• CLI concepts
• Quality of Service (QoS) policies and profiles
Preface
Page 14 7210 SAS D, E, K OS Quality of Service Guide
List of Technical Publications
The 7210-SAS D, E, K OS documentation set is composed of the following books:
• 7210-SAS D, E, K OS Basic System Configuration Guide
This guide describes basic system configurations and operations.
• 7210-SAS D, E, K OS System Management Guide
This guide describes system security and access configurations as well as event
logging and accounting logs.
• 7210-SAS D, E, K OS Interface Configuration Guide
This guide describes card, Media Dependent Adapter (MDA), link aggregation group
(LAG), and port provisioning.
• 7210-SAS D, E, K OS Router Configuration Guide
This guide describes logical IP routing interfaces and associated attributes such as an
IP address, port, as well as IP and MAC-based filtering.
• 7210-SAS D, E, K OS Services Guide
This guide describes how to configure service parameters such as customer
information, and user services.
• , 7210-SAS D, E, K OS OAM and Diagnostic Guide
This guide describes how to configure features such as service mirroring and
Operations, Administration and Management (OAM) tools.
• 7210-SAS D, E, K OS Quality of Service Guide
This guide describes how to configure Quality of Service (QoS) policy management.
Preface
7210 SAS D, E, K OS Quality of Service Guide Page 15
Technical Support
If you purchased a service agreement for your 7210 SAS device and related products from a
distributor or authorized reseller, contact the technical support staff for that distributor or reseller
for assistance. If you purchased an Alcatel-Lucent service agreement, contact your welcome
center.
Web: http://www.alcatel-lucent.com/wps/portal/support
Preface
Page 16 7210 SAS D, E, K OS Quality of Service Guide
7210 SAS D, E, K OS Quality of Service Guide Page 17
Getting Started
In This Chapter
This chapter provides process flow information to configure Quality of Service (QoS) policies and
provision services.
Alcatel-Lucent 7210 SAS-Series Services Configuration Process
Page 18 7210 SAS D, E, K OS Quality of Service Guide
Alcatel-Lucent 7210 SAS-Series Services Configuration
Process
Table 1 lists the tasks necessary to configure and apply QoS policies. This guide is presented in an
overall logical configuration flow. Each section describes a software area and provides CLI syntax
and command usage to configure parameters for a functional area.
Table 1: Configuration Process
Area Task Chapter
Policy configuration Configuring QoS Policies
• Egress Rate Port Level Egress Rate-Limiting
on page 95
• Accounting Mode Frame Based Accounting on
page 105
• Network Network QoS Policies on page 117
• Network queue Network Queue QoS Policies on
page 187
• SAP ingress Service Ingress QoS Policies on
page 219
• Access egress Access Egress QoS Policies on
7210 SAS-M and 7210 SAS-T on
page 341
• Port scheduler QoS Port Scheduler Policies for
7210 SAS-M and 7210 SAS-T on
page 449
• Slope Slope QoS Policies on page 477
Reference • List of IEEE, IETF, and other
proprietary entities
Standards and Protocol Support on
page 569
QoS Overview
Page 20 7210 SAS D, E, K OS Quality of Service Guide
QoS Overview
The 7210 SAS devices are designed with QoS mechanisms on both ingress and egress to support
multiple services per physical port. The 7210 SAS devices are extensive and flexible capabilities
to Classify, Police, Queue, Shape, and mark traffic.
NOTE: The QoS capabilities supported on different 7210 SAS platforms are different. In other
words, not all the platforms support all of the capabilities. Please read through the following
chapters to know what is available on different 7210 SAS platforms.
In the Alcatel-Lucent service router’s service model, a service is provisioned on the provider-edge
(PE) equipment. Service data is encapsulated and then sent in a service tunnel to the far-end
Alcatel-Lucent service router where the service data is delivered.
The operational theory of a service tunnel is that the encapsulation of the data between the two
Alcatel Lucent service routers appear like a Layer 2 path to the service data although it is really
traversing an IP or IP/MPLS core. The tunnel from one edge device to the other edge device is
provisioned with an encapsulation and the services are mapped to the tunnel that most
appropriately supports the service needs.
The 7210 SAS supports eight forwarding classes internally named: Network-Control, High-1,
Expedited, High-2, Low-1, Assured, Low-2 and Best-Effort. The forwarding classes are discussed
in more detail in Forwarding Classes on page 108.
7210 SAS devices use QoS policies to control how QoS is handled at distinct points in the service
delivery model within the device. There are different types of QoS policies that cater to the
different QoS needs at each point in the service delivery model. QoS policies are defined in a
global context in the 7210 SAS and only take effect when the policy is applied to a relevant entity.
QoS policies are uniquely identified with a policy ID number or name. Typically, Policy ID 1 or
Policy ID “default” (there are a few instances where the default QoS policy uses a different ID) is
reserved for the default policy which is used if no policy is explicitly applied.
The QoS policies within the 7210 SAS can be divided into three main types:
• QoS policies are used for classification, defining metering and queuing attributes and
defining marking behavior.
• Slope policies define default buffer allocations and WRED slope definitions.
• Port Scheduler policies, SAP ingress/egress policies or network/network-queue policies
determine how queues are scheduled.
/
