Changes to This Document, Xxviii | Cisco Systems Network Router

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

Image 28

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

Contents

Corporate Headquarters Text Part Number OL-3847-01 Rev. D0 Copyright 2003, Cisco Systems, Inc All rights reserved N T E N T S Iii Compatible Standards Worksheets Part Number OL-3847-01 Rev. D0, April G U R E S Vii Viii B L E S Part Number OL-3847-01 Rev. D0, April Audience ObjectivesOrganization Conventions Xii Documentation Documentation Notes for the April 2004 Product ReleasesRelated Documentation Xiii Technical Manual Order of Use Xiv Technical Manual Titles and Descriptions Terms Xvi Xvii Xviii Xix Reference Guides Xxi Document Title Description Xxii Xxiii Xxiv Xxv Xxvi Obtaining Documentation Cisco.comOrdering Documentation Xxvii Chapter Changes Changes to This DocumentXxviii Obtaining Technical Assistance Documentation FeedbackCisco TAC Website Opening a TAC Case TAC Case Priority Definitions Obtaining Additional Publications and InformationXxx Xxxi Xxxii Introduction to Pnni Pnni Network Database Single Peer Group Topology Hierarchical Pnni Network Topology Example Single Peer Group Topology Peer group Ppeer Peer Group Leaders Simple Node Representation Complex Node Representation Simple Node Representation Border Nodes Pnni Internetworking with AiniHierarchical Pnni Network Benefits Pnni Internetworking with Iisp Example Pnni Internetworking with Aini Topology Part Number OL-3847-01 Rev. D0, April Specifications Compatible Standards PXM45 CapabilitiesPXM1E PXM45/B Capabilities SES SES Connection Limit Adjustments Connection Type Switch Connections CWM EndpointsSVC DAX Spvc Parallel 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 Nodes Planning 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 Overview Pnni Addressing Example Planning Address Configuration Settings Selecting an ATM Address Format Supported Address Formats ESI SEL IDP DSP ATM Field Description Default Values Guidelines for Selecting an Address Format Selecting a Pnni Level Address Registration AuthoritiesCategory Type Authorities DCC 4shows 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 Bytes Default Peer Group ID Selecting the Pnni Peer Group ID Selecting the ATM Address 20-byte Node Address Selecting 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 Plan Closed User Group Overview Closed User Group Example Selecting an Interlock Code Planning CUG Configuration SettingsSelecting an Index Selecting Internal CUG Access Options Selecting CPE Addresses Selecting External CUG Access Options Specifying a Preferential CUG Selecting a Default CUG Address Worksheets CUG 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 Metric How SVCs and SVPs use the SPTs How SPVCs and SPVPs use the SPTs On-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+12 Priority Routing Grooming Soft Rerouting Priority BumpingBlocking Pass-Through Connections Nodal Point-to-Multipoint Branch Restriction AXSM/A AXSM/BAXSM-E AXSM-XG Farthest Node Branching Part Number OL-3847-01 Rev. D0, April ABR AesaAini Ansi APS P2MP CBRCTD IN-2 CUG CWMDIN IN-3 IN-4 PGL PnniMGX SES IN-5 IN-6 UBR UNITAC IN-7 IN-8