Cisco Systems Network Router manual Changes to This Document, Chapter Changes, Xxviii

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About This Guide

Documentation

Finding Documentation for Cisco MGX, BPX, SES, and CWM Products

The previous “Ordering Documentation” section applies to other Cisco documentation. Starting in 2003, all documents listed in the “Related Documentation” section are available online only unless stated otherwise. You can find the documents listed in Table 1 online as follows:

•In your browser’s URL field, enter www.cisco.com. In the top right search field, enter the complete document part number (for example, enter OL-4538-01, including the -01 suffix). Click on GO.

•For the Cisco Wide Area Network Manager (CWM) documents, in your browser’s URL field, enter http://www.cisco.com/univercd/cc/td/doc/product/wanbu/svplus/index.htm and look for the CWM release number.

•For all other documents, in your browser’s URL field, enter http://www.cisco.com/univercd/cc/td/doc/product/wanbu/index.htm. Look for the switch name and release number. For example, look for MGX 8850 (PXM1E), then Release 5.

Changes to This Document

Table 4 summarizes the changes made to this guide since the previous release.

Table 4 Changes to This Book Since the Previous Release

Chapter	Changes

Chapter 1, “Introduction to PNNI”	Added the following sections:
	• The PNNI Network Database
	•	Simple Node Representation
	•	Complex Node Representation

Chapter 2, “Interoperability and Performance	Added specifications for Release 5 and revised
Planning”	some specifications and guidelines.

Chapter 3, “Address and Closed User Group	Minor revisions.
Planning”

Chapter 4, “Planning Intermediate Route	Rewrote most of the chapter. Added the following
Selection”	sections:
	• Shortest Path Table Routing
	• How MGX and SES Nodes Select Links
	•	Preferred Routing
	•	Priority Routing
	•	Grooming
	•	Soft Rerouting
	•	Priority Bumping

	Cisco PNNI Network Planning Guide for MGX and SES Products, Release 5
xxviii	Part Number OL-3847-01 Rev. D0, April, 2004

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Contents Corporate Headquarters Text Part Number OL-3847-01 Rev. D0Copyright 2003, Cisco Systems, Inc All rights reserved N T E N T S IiiCompatible Standards Worksheets Part Number OL-3847-01 Rev. D0, April G U R E S ViiViii B L E S Part Number OL-3847-01 Rev. D0, April Audience ObjectivesOrganization Conventions XiiDocumentation Documentation Notes for the April 2004 Product ReleasesRelated Documentation XiiiTechnical Manual Order of Use XivTechnical Manual Titles and Descriptions TermsXvi Xvii Xviii Xix Reference Guides Xxi Document Title Description XxiiXxiii Xxiv Xxv Xxvi Obtaining Documentation Cisco.comOrdering Documentation XxviiChapter Changes Changes to This DocumentXxviii Obtaining Technical Assistance Documentation FeedbackCisco TAC Website Opening a TAC CaseTAC Case Priority Definitions Obtaining Additional Publications and InformationXxx Xxxi Xxxii Introduction to Pnni Pnni Network DatabaseSingle Peer Group Topology Hierarchical Pnni Network Topology Example Single Peer Group TopologyPeer group Ppeer Peer Group Leaders Simple Node RepresentationComplex Node Representation Simple Node RepresentationBorder Nodes Pnni Internetworking with AiniHierarchical Pnni Network Benefits Pnni Internetworking with Iisp Example Pnni Internetworking with Aini TopologyPart Number OL-3847-01 Rev. D0, April Specifications Compatible StandardsPXM45 CapabilitiesPXM1E PXM45/BCapabilities SES SESConnection Limit Adjustments Connection Type Switch Connections CWM EndpointsSVC DAX SpvcParallel Links Between Adjacent Switches Install Redundant Hardware in SwitchesPhysical Network Planning Planning Guidelines for Individual Peer Groups Multiple Links Between Adjacent Peer GroupsMultiple Links to an External Network Multiple Paths Between Network NodesPlanning Guidelines for Peer Group Leaders Planning Guidelines for Hierarchical NetworksPlanning Guidelines for Border Nodes Part Number OL-3847-01 Rev. D0, April Address and Closed User Group Planning Address Planning OverviewPnni Addressing Example Planning Address Configuration Settings Selecting an ATM Address FormatSupported Address Formats ESI SEL IDP DSPATM Field Description Default Values Guidelines for Selecting an Address FormatSelecting a Pnni Level Address Registration AuthoritiesCategory Type Authorities DCC4shows an example topology of a Pnni MPG WAN Part Number OL-3847-01 Rev. D0, April Length Level Peer Group ID Portion of ATM Address BytesDefault Peer Group ID Selecting the Pnni Peer Group IDSelecting the ATM Address 20-byte Node AddressSelecting the Spvc Address Prefix Selecting the Ilmi Address PrefixPlanning Address Prefixes for Aini and Iisp Links Selecting Static Addresses for UNI Ports Additional Guidelines for Creating an Address PlanClosed User Group Overview Closed User Group ExampleSelecting an Interlock Code Planning CUG Configuration SettingsSelecting an Index Selecting Internal CUG Access Options Selecting CPE AddressesSelecting External CUG Access Options Specifying a Preferential CUGSelecting a Default CUG Address WorksheetsCUG Part Number OL-3847-01 Rev. D0, April How MGX and SES Nodes Select Routes Administrative WeightLink and Route Metrics Cell Delay Variation Cell Transfer DelayAvailable Cell Rate Maximum Cell Rate Shortest Path Table RoutingShortest Path Tables Class of Service Tables Service Class Acronym Definition GuidelinesCTD CDV Traffic MetricHow SVCs and SVPs use the SPTs How SPVCs and SPVPs use the SPTsOn-Demand Routing How MGX and SES Nodes Select LinksLoad Balancing for SPT and On-Demand Routing Additional Routing Features in MGX and SES Nodes ServicePreferred Routing CLR0+12Priority Routing GroomingSoft Rerouting Priority BumpingBlocking Pass-Through Connections Nodal Point-to-Multipoint Branch RestrictionAXSM/A AXSM/BAXSM-E AXSM-XGFarthest Node Branching Part Number OL-3847-01 Rev. D0, April ABR AesaAini Ansi APSP2MP CBRCTD IN-2CUG CWMDIN IN-3IN-4 PGL PnniMGX SES IN-5IN-6 UBR UNITAC IN-7IN-8