Avaya Configuring Differentiated Services (308620-14.20 Rev 00) User Manual

BayRS Version 14.20Part No. 308620-14.20 Rev 00December 2000600 Technology Park DriveBillerica, MA 01821-4130Configuring Differentiated Services

Configuring Differentiated ServicesA-2308620-14.20 Rev 00The Technician Interface allows you to modify attributes by issuing set and commit commands w

Site Manager Parameters308620-14.20 Rev 00A-3 Parameter: EnablePath: Configuration Manager > Protocols > IP > DiffServ > Interfaces Defaul

Configuring Differentiated ServicesA-4308620-14.20 Rev 00Parameter: Config TypePath: Configuration Manager > Protocols > IP > DiffServ > I

Site Manager Parameters308620-14.20 Rev 00A-5 Interface Record ParameterThe DiffServ Interface Record window (Figure A-2) contains the IP Address para

Configuring Differentiated ServicesA-6308620-14.20 Rev 00Differentiated Services Global ParameterThe Edit DiffServ Global Parameters window (Figure A-

Site Manager Parameters308620-14.20 Rev 00A-7 COPS Global ParametersThe Edit COPS Global Parameters window (Figure A-4) contains the COPS client param

Configuring Differentiated ServicesA-8308620-14.20 Rev 00Parameter: Solo Slot MaskPath: Configuration Manager > Protocols > Global Protocols >

Site Manager Parameters308620-14.20 Rev 00A-9 COPS Server List ParametersThe COPS Server List window (Figure A-5) contains the list of COPS servers th

Configuring Differentiated ServicesA-10308620-14.20 Rev 00Parameter: EnablePath: Configuration Manager > Protocols > Global Protocols > COPS

Site Manager Parameters308620-14.20 Rev 00A-11 Parameter: Connection Retry CountPath: Configuration Manager > Protocols > Global Protocols >

308620-14.20 Rev 00xiFiguresFigure 1-1. Differentiated Services Network ...1-3Figure 1-2.

Configuring Differentiated ServicesA-12308620-14.20 Rev 00Parameter: Report Time PeriodPath: Configuration Manager > Protocols > Global Protocol

Site Manager Parameters308620-14.20 Rev 00A-13 Parameter: TCP KeepAlive RTOPath: Configuration Manager > Protocols > Global Protocols > COPS

Configuring Differentiated ServicesA-14308620-14.20 Rev 00Parameter: Remote TCP PortPath: Configuration Manager > Protocols > Global Protocols &

Site Manager Parameters308620-14.20 Rev 00A-15 COPS Server Record ParametersThe COPS Server Record window (Figure A-6) contains the parameters that te

Configuring Differentiated ServicesA-16308620-14.20 Rev 00Static Traffic Filter ParametersWhen you click on the Traffic Filt button in the DiffServ In

Site Manager Parameters308620-14.20 Rev 00A-17 When you click on Template in the DiffServ Static Filters window (Figure A-7), and then click on Create

Configuring Differentiated ServicesA-18308620-14.20 Rev 00The URL string criterion is unique to differentiated services.For the filter criteria, you c

Site Manager Parameters308620-14.20 Rev 00A-19 DS Police ParametersTo configure static traffic filters that “police” the data flow, set the DS Police

Configuring Differentiated ServicesA-20308620-14.20 Rev 00Parameter: Token Bucket Rate (Kbps)Path: Configuration Manager > Protocols > IP > D

Site Manager Parameters308620-14.20 Rev 00A-21 Parameter: Max Policed (Bytes)Path: Configuration Manager > Protocols > IP > DiffServ > Int

Configuring Differentiated ServicesA-22308620-14.20 Rev 00Parameter: Inprofile BehaviorPath: Configuration Manager > Protocols > IP > DiffSer

Site Manager Parameters308620-14.20 Rev 00A-23 HTTP Filter ParameterYou can filter packets based on URL strings. To do this, specify the URL in the Ad

308620-14.20 Rev 00B-1 Appendix BConfiguration ExamplesThis appendix contains the following configuration examples:Topic PageDifferentiated Services N

Configuring Differentiated ServicesB-2308620-14.20 Rev 00Differentiated Services Network Using Dynamic FiltersIn this configuration example, a local n

Configuration Examples308620-14.20 Rev 00B-3 The sequence of events in this network is as follows:1.When the router activates, it connects to the poli

Configuring Differentiated ServicesB-4308620-14.20 Rev 00Configure a Differentiated Services InterfaceFirst, configure a differentiated services inter

Configuration Examples308620-14.20 Rev 00B-5 The router can now operate as a differentiated services edge device, marking the video data packets for p

Configuring Differentiated ServicesB-6308620-14.20 Rev 00Differentiated Services Network Using Static Traffic FiltersIn this configuration example, a

Configuration Examples308620-14.20 Rev 00B-7 Configuring the Router Using Site ManagerFor the network in Figure B-2, you must configure a static traff

308620-14.20 Rev 00xiiiTablesTable 3-1. TCP and UDP Match Criteria Parameters ...3-8Table 3-2. Common TCP

Configuring Differentiated ServicesB-8308620-14.20 Rev 00Configure a Static FilterTo configure a filter template that includes the DS police action, c

Configuration Examples308620-14.20 Rev 00B-9 Apply the template that you just created by completing the following tasks:After the router marks a packe

Configuring Differentiated ServicesB-10308620-14.20 Rev 00ds-field {}protocol {}src-tcp-ports {}src-tcp-udp-ports {}src-udp-ports {}tcp-established of

Configuration Examples308620-14.20 Rev 00B-11 Queue Management and Scheduling Configuration ExampleThis section provides an example of how to configur

Configuring Differentiated ServicesB-12308620-14.20 Rev 00Configuring a Differentiated Services Traffic Filter on an Inbound InterfaceThe following co

Configuration Examples308620-14.20 Rev 00B-13 The min-threshold parameter defines the buffer percentage at which RED begins dropping packets.The max-t

Configuring Differentiated ServicesB-14308620-14.20 Rev 00The following commands display the default values for queue parameters.dsqms-classifier/1010

Configuration Examples308620-14.20 Rev 00B-15 When you change parameters for the dsqms, dsqms-queue, or dsqms-classifier objects, you must restart DSQ

Configuring Differentiated ServicesB-16308620-14.20 Rev 00 flow-fairness disabled id 2 idle-queue-loss-rate 30 jitter-const normal priority-level

Configuration Examples308620-14.20 Rev 00B-17 Displaying the DSQMS Configuration Using the show CommandUse the show config -r command to display the c

Configuring Differentiated ServicesB-18308620-14.20 Rev 00backethernet/3/1# box; serial/5/1; dsqmsdsqms/serial/5/1# show config -rdsqms dsqms-queue i

308620-14.20 Rev 00C-1 Appendix CUsing BCC show CommandsTo display configuration and statistical data about differentiated services from the managemen

Configuring Differentiated ServicesC-2308620-14.20 Rev 00Online Help for show CommandsTo display a list of command options, enter one of these command

Using BCC show Commands308620-14.20 Rev 00C-3 show cops serversThe show cops servers command displays a table of configured COPS servers or specific i

Configuring Differentiated ServicesC-4308620-14.20 Rev 00show diffserv interfacesThe show diffserv interfaces command displays a table of interfaces w

Using BCC show Commands308620-14.20 Rev 00C-5 show diffserv traffic-filter detailThe show diffserv traffic-filter detail command lists filters and the

Configuring Differentiated ServicesC-6308620-14.20 Rev 00The output includes the following information:show dsqms classifiersThe show dsqms classifier

Using BCC show Commands308620-14.20 Rev 00C-7 For example, the following show dsqms classifiers command displays classifier information for three circ

Configuring Differentiated ServicesC-8308620-14.20 Rev 00show dsqms interfaces statsThe show dsqms interfaces stats command displays a table of interf

Using BCC show Commands308620-14.20 Rev 00C-9 show dsqms interfaces summaryThe show dsqms interfaces summary command displays a table of interfaces wh

308620-14.20 Rev 00xv PrefaceThis guide describes differentiated services and what you do to start and customize these services on a Nortel Networks™

Configuring Differentiated ServicesC-10308620-14.20 Rev 00The output includes the following information:-droptype <type>Displays information abo

Using BCC show Commands308620-14.20 Rev 00C-11 show dsqms queues statsThe show dsqms queues stats command displays a table of DSQMS queues, or specifi

Configuring Differentiated ServicesC-12308620-14.20 Rev 00show dsqms queues summaryThe show dsqms queues summary command displays a table of interface

Using BCC show Commands308620-14.20 Rev 00C-13 The output includes the following information:show dsqms redThe show dsqms red command displays a table

308620-14.20 Rev 00Index-1Aacronyms, xviiiactions for static filtersdescribed, 3-2, 3-4log, 3-15mark, 3-13police, 3-14specifying, 3-13average-queue-ga

Index-2308620-14.20 Rev 00deletingCOPS from the router, 5-13COPS server, 5-11differentiated services interface, 4-6, 4-7unused DSQMS RED entries, 6-9d

308620-14.20 Rev 00Index-3interfacesdeleting using Site Manager, 4-7deleting using the BCC, 4-6disabling using Site Manager, 4-5disabling using the BC

Index-4308620-14.20 Rev 00QMS (continued)classifierschanging RED functions, 6-8configuring, 2-12description, 2-8configuring, 2-7configuring queues, 2-

308620-14.20 Rev 00Index-5TCP (continued)match TCP-established criterion for static filters, 3-11response to WRED queue management, 1-9TCP KeepAlive I

Configuring Differentiated Servicesxvi308620-14.20 Rev 00Text ConventionsThis guide uses the following text conventions:angle brackets (< >) Ind

Preface308620-14.20 Rev 00xvii italic text Indicates new terms, book titles, and variables in command syntax descriptions. Where a variable is two or

Configuring Differentiated Servicesxviii308620-14.20 Rev 00AcronymsThis guide uses the following acronyms:COPS Common Open Policy ServiceDHCP Dynamic

Preface308620-14.20 Rev 00xix Hard-Copy Technical ManualsYou can print selected technical manuals and release notes free, directly from the Internet.

ii308620-14.20 Rev 00 Copyright © 2000 Nortel NetworksAll rights reserved. December 2000.The information in this document is subject to change without

308620-14.20 Rev 001-1 Chapter 1Differentiated Services OverviewDifferentiated services is a network architecture that lets service providers and ente

Configuring Differentiated Services1-2308620-14.20 Rev 00• Manually configure filters on the edge router.You can create filters that instruct the rout

Differentiated Services Overview308620-14.20 Rev 001-3 • Edge routerThe edge router resides at the edge of the network. Its function is to classify da

Configuring Differentiated Services1-4308620-14.20 Rev 00Communicating with the OPS Policy ServerIf your differentiated services network uses an OPS p

Differentiated Services Overview308620-14.20 Rev 001-5 Figure 1-2 shows the Nortel Networks OPS policy server architecture.Figure 1-2. Architecture of

Configuring Differentiated Services1-6308620-14.20 Rev 004.Packets that match the flow filter criteria are marked by the differentiated services appli

Differentiated Services Overview308620-14.20 Rev 001-7 Figure 1-3. Nortel Networks Differentiated Services ArchitectureDFS0005AOPS policy server1Inbou

Configuring Differentiated Services1-8308620-14.20 Rev 00URL FiltersThe router can filter and mark Hypertext Transfer Protocol (HTTP) traffic based on

Differentiated Services Overview308620-14.20 Rev 001-9 Queue Management and Scheduling (QMS)BayRS includes queue management and scheduling (QMS) mecha

308620-14.20 Rev 00iiiNortel Networks NA Inc. Software License AgreementNOTICE: Please carefully read this license agreement before copying or using t

Configuring Differentiated Services1-10308620-14.20 Rev 00Queue Scheduling Using DRRDifferentiated services traffic filters sort incoming IP traffic a

308620-14.20 Rev 002-1 Chapter 2Starting Differentiated ServicesThe quickest way to configure differentiated services on the router is to enable it wi

Configuring Differentiated Services2-2308620-14.20 Rev 00Planning for a Differentiated Services NetworkThis guide primarily explains how to configure

Starting Differentiated Services308620-14.20 Rev 002-3 Starting Differentiated Services Using the BCCStarting differentiated services involves enablin

Configuring Differentiated Services2-4308620-14.20 Rev 00Choosing a Filter MechanismWhen you enable differentiated services, you must select a mechani

Starting Differentiated Services308620-14.20 Rev 002-5 Starting Differentiated Services Using Site ManagerStarting differentiated services involves en

Configuring Differentiated Services2-6308620-14.20 Rev 00Go to one of the following sections to configure a filter mechanism:•“Enabling COPS” (next se

Starting Differentiated Services308620-14.20 Rev 002-7 Configuring Queue Management and SchedulingTo configure queue management and scheduling for dif

Configuring Differentiated Services2-8308620-14.20 Rev 00The traffic classifiers within a DSQMS queue sort traffic based on the differentiated service

Starting Differentiated Services308620-14.20 Rev 002-9 Implementation NotesThe following guidelines can help you successfully configure DSQMS on your

iv308620-14.20 Rev 00for the security of its own data and information and for maintaining adequate procedures apart from the Software to reconstruct

Configuring Differentiated Services2-10308620-14.20 Rev 00DSQMS Configuration StepsTo configure DSQMS, you perform the following steps. Each step is d

Starting Differentiated Services308620-14.20 Rev 002-11 min_value is the queue size below which no packets are dropped by RED.max_value is the queue s

Configuring Differentiated Services2-12308620-14.20 Rev 00Adding a DSQMS Queue to an InterfaceTo configure a DSQMS queue on an interface, navigate to

Starting Differentiated Services308620-14.20 Rev 002-13 For example, the following command configures a traffic classifier on the first queue on seria

308620-14.20 Rev 003-1 Chapter 3Configuring Static Traffic Filters for DifferentiatedServicesIf you do not have a policy server or if you chose to use

Configuring Differentiated Services3-2308620-14.20 Rev 00Traffic Filter TemplatesA traffic filter template is a reusable, predefined specification for

Configuring Static Traffic Filters for Differentiated Services308620-14.20 Rev 003-3 Filter PrecedenceTo specify a traffic filter’s relative priority

Configuring Differentiated Services3-4308620-14.20 Rev 00Filter CriteriaWhen you create a differentiated services traffic filter template or a differe

Configuring Static Traffic Filters for Differentiated Services308620-14.20 Rev 003-5 Creating Static Filters Using the BCCTo create a differentiated s

308620-14.20 Rev 00vContents PrefaceBefore You Begin ...

Configuring Differentiated Services3-6308620-14.20 Rev 00Specifying Match CriteriaThe match criteria in a filter specify which fields in the IP header

Configuring Static Traffic Filters for Differentiated Services308620-14.20 Rev 003-7 Example - Source and Destination Network Criteriamatch/ds-filter/

Configuring Differentiated Services3-8308620-14.20 Rev 00range_of_ports is a space-delimited list.Table 3-2 lists some common TCP port and UDP port va

Configuring Static Traffic Filters for Differentiated Services308620-14.20 Rev 003-9 Example - Source TCP PortThis example specifies source TCP ports

Configuring Differentiated Services3-10308620-14.20 Rev 00To filter traffic using the protocol field, go to the match prompt (for example, box; ethern

Configuring Static Traffic Filters for Differentiated Services308620-14.20 Rev 003-11 To filter on the DS field, go to the match prompt (for example,

Configuring Differentiated Services3-12308620-14.20 Rev 00Example - TCP-Established CriteriaIn this example, the router filters packets with the ACK a

Configuring Static Traffic Filters for Differentiated Services308620-14.20 Rev 003-13 Specifying the Action of Traffic FiltersBy default, the action o

Configuring Differentiated Services3-14308620-14.20 Rev 00For information about how DSQMS uses the DS field, refer to “Configuring Queue Management an

Configuring Static Traffic Filters for Differentiated Services308620-14.20 Rev 003-15 Example - Police ActionThis example increases the min-policed va

vi308620-14.20 Rev 00Enabling COPS ...2-6Config

Configuring Differentiated Services3-16308620-14.20 Rev 00Disabling and Reenabling Traffic FiltersBy default, traffic filters are enabled on a differe

Configuring Static Traffic Filters for Differentiated Services308620-14.20 Rev 003-17 Creating Static Filters Using Site ManagerWhen you create traffi

Configuring Differentiated Services3-18308620-14.20 Rev 0011. Add one or more filter criteria.12. Choose Action. The Action menu opens.13. Choose Add.

Configuring Static Traffic Filters for Differentiated Services308620-14.20 Rev 003-19 Applying the Template to a FilterAfter you create your different

Configuring Differentiated Services3-20308620-14.20 Rev 00Configuring Filters for HTTP PacketsTo modify a filter to include URLs, complete the followi

Configuring Static Traffic Filters for Differentiated Services308620-14.20 Rev 003-21 Customizing the Action of Traffic FiltersThese procedures assume

Configuring Differentiated Services3-22308620-14.20 Rev 00Modifying URL Match CriteriaThese procedures assume that you created a filter template and a

308620-14.20 Rev 004-1 Chapter 4Customizing Differentiated ServicesWhen you enable differentiated services, default values are in effect for all param

Configuring Differentiated Services4-2308620-14.20 Rev 00Modifying a Differentiated Services InterfaceYou can modify the configuration type (static or

Customizing Differentiated Services308620-14.20 Rev 004-3 Using Site ManagerTo modify a differentiated services interface, complete the following task

308620-14.20 Rev 00viiCreating Static Filters Using Site Manager ...3-17Creating a Fi

Configuring Differentiated Services4-4308620-14.20 Rev 00Disabling and Reenabling Differentiated ServicesAfter you create a differentiated services in

Customizing Differentiated Services308620-14.20 Rev 004-5 Using Site ManagerTo disable or reenable a single interface, complete the following tasks:To

Configuring Differentiated Services4-6308620-14.20 Rev 00Deleting a Differentiated Services InterfaceYou can delete differentiated services from a sin

Customizing Differentiated Services308620-14.20 Rev 004-7 Using Site ManagerTo delete a single interface, complete the following tasks:To globally del

308620-14.20 Rev 005-1 Chapter 5Customizing COPSWhen you start differentiated services with COPS for filter management, by default you set up a single

Configuring Differentiated Services5-2308620-14.20 Rev 00Modifying COPS Global ParametersIn most cases, you do not need to modify the solo slot mask,

Customizing COPS308620-14.20 Rev 005-3 Adding COPS ServersYou can add COPS servers to your router configuration to provide additional or backup filter

Configuring Differentiated Services5-4308620-14.20 Rev 00Prioritizing COPS ServersBy default, all COPS servers have a priority value of 1 and are util

Customizing COPS308620-14.20 Rev 005-5 Modifying the COPS ConnectionThe connection to the COPS server is established at two different levels: the COPS

viii308620-14.20 Rev 00Disabling a Single DSQMS Queue ...6-9Deleting U

Configuring Differentiated Services5-6308620-14.20 Rev 00For example, the following commands set the time between retries to 15 seconds, the time peri

Customizing COPS308620-14.20 Rev 005-7 Maintaining the TCP Connection to the ServerThe router communicates with the COPS server across a TCP connectio

Configuring Differentiated Services5-8308620-14.20 Rev 00Using Site ManagerTo modify the keepalive parameters that maintain the TCP connection, comple

Customizing COPS308620-14.20 Rev 005-9 Changing the Remote TCP PortIf the policy server application operates on a different TCP port than the default

Configuring Differentiated Services5-10308620-14.20 Rev 00Disabling and Reenabling a COPS ServerYou can temporarily disable and then reenable a COPS s

Customizing COPS308620-14.20 Rev 005-11 Deleting a COPS ServerYou can delete a COPS server that should no longer be used or that is no longer availabl

Configuring Differentiated Services5-12308620-14.20 Rev 00Disabling and Reenabling COPS on the RouterYou can temporarily disable and then reenable COP

Customizing COPS308620-14.20 Rev 005-13 Deleting COPS from the RouterYou can delete COPS from the router completely if you no longer plan to use polic

308620-14.20 Rev 006-1 Chapter 6Customizing Queue Management and SchedulingYou can customize many aspects of how differentiated services queue managem

308620-14.20 Rev 00ixAppendix C Using BCC show CommandsOnline Help for show Commands ...

Configuring Differentiated Services6-2308620-14.20 Rev 00Modifying RED ParametersAfter you activate RED on the router, you configure different ways th

Customizing Queue Management and Scheduling308620-14.20 Rev 006-3 Activating DSQMS Configuration Changes on an InterfaceIf you change parameters for t

Configuring Differentiated Services6-4308620-14.20 Rev 00To enable or disable the dequeue-at-line-rate parameter, go to the DSQMS prompt on the interf

Customizing Queue Management and Scheduling308620-14.20 Rev 006-5 Modifying a DSQMS QueueTable 6-2 lists the parameters that you can set to customize

Configuring Differentiated Services6-6308620-14.20 Rev 00You cannot change the id parameter of an existing DSQMS queue. To make this change, you must

Customizing Queue Management and Scheduling308620-14.20 Rev 006-7 Table 6-3 lists the DSQMS queue parameters that you can change for each queue type.3

Configuring Differentiated Services6-8308620-14.20 Rev 00Changing a DSQMS Classifier’s RED FunctionA DSQMS classifier examines the differentiated serv

Customizing Queue Management and Scheduling308620-14.20 Rev 006-9 Disabling a Single DSQMS QueueTo disable a single DSQMS queue, navigate to the queue

308620-14.20 Rev 00A-1 Appendix ASite Manager ParametersThis appendix contains the Site Manager parameter descriptions for differentiated services. Yo