Cisco Systems Network Router Selecting External CUG Access Options, Specifying a Preferential CUG

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Chapter 3 Address and Closed User Group Planning

Planning CUG Configuration Settings

Note The network administrator can set the internal access during the initial CUG member configuration, or change the configuration later. There is no option to simultaneously block incoming and outgoing communications. If the administrator needs to block incoming and outgoing communications, the member should be removed from the CUG.

Selecting External CUG Access Options

External access options control communications between a specific CUG member and all destinations outside of the CUG. By default, CUG members cannot access destinations outside of the CUG. In the CLI, the external access options are divided into incoming and outgoing controls. The CUG Configuration Worksheet, Table 3-6provides separate columns where you can enter the incoming and outgoing external access options for each CUG member.

There are two controls for managing incoming communications to CUG members from external sources: disallowed and allowed.

There are three controls for managing outgoing communications from a CUG member to external destinations: disallowed, per call, and permanent. The disallowed control does what its name implies. The per call control enables outgoing calls when an outgoing CPE call specifically requests outside access, and the permanent control permanently enables outgoing connections as if they were CUG membership connections.

Note The network administrator can set the external access during the initial CUG member configuration, or change the configuration later.

Specifying a Preferential CUG

A preferential CUG is a configuration definition that specifies which CUG membership applies when the CUG member (CPE) does not specify a CUG index during call set up. There can be just one preferential CUG for each CUG member. A preferential CUG assignment is ignored during call setup when the CPE explicitly requests a CUG (using a CUG index).

If a preferential CUG is not assigned to a user and the CPE originates a call without a CUG index, the call is treated as a normal call that is not part of any CUG. Normal calls cannot be established with CUG members unless those members have been configured to communicate outside the CUG.

Note If outgoing calls to the CUG are barred for the user, the CUG cannot be defined as the preferential CUG.

When planning a CUG using the CUG Configuration Worksheet, Table 3-6, use the last table column to indicate if the CUG index and interlock code specified at the top of the table should be the default CUG for this CUG member.

 

 

Cisco PNNI Network Planning Guide for MGX and SES Products, Release 5

 

 

 

 

 

 

Part Number OL-3847-01 Rev. D0, April, 2004

 

 

3-17

 

 

 

 

 

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Contents Text Part Number OL-3847-01 Rev. D0 Corporate HeadquartersCopyright 2003, Cisco Systems, Inc All rights reserved Iii N T E N T SCompatible Standards Worksheets Part Number OL-3847-01 Rev. D0, April Vii G U R E SViii B L E S Part Number OL-3847-01 Rev. D0, April Audience ObjectivesOrganization Xii ConventionsXiii DocumentationDocumentation Notes for the April 2004 Product Releases Related DocumentationXiv Technical Manual Order of UseTerms Technical Manual Titles and DescriptionsXvi Xvii Xviii Xix Reference Guides Xxi Xxii Document Title DescriptionXxiii Xxiv Xxv Xxvi Xxvii Obtaining DocumentationCisco.com Ordering DocumentationChapter Changes Changes to This DocumentXxviii Opening a TAC Case Obtaining Technical AssistanceDocumentation Feedback Cisco TAC WebsiteTAC Case Priority Definitions Obtaining Additional Publications and InformationXxx Xxxi Xxxii Pnni Network Database Introduction to PnniSingle Peer Group Topology Example Single Peer Group Topology Hierarchical Pnni Network TopologyPeer group Ppeer Simple Node Representation Peer Group LeadersSimple Node Representation Complex Node RepresentationBorder Nodes Pnni Internetworking with AiniHierarchical Pnni Network Benefits Example Pnni Internetworking with Aini Topology Pnni Internetworking with IispPart Number OL-3847-01 Rev. D0, April Compatible Standards SpecificationsPXM45/B PXM45Capabilities PXM1ESES Capabilities SESDAX Spvc Connection Limit AdjustmentsConnection Type Switch Connections CWM Endpoints SVCParallel Links Between Adjacent Switches Install Redundant Hardware in SwitchesPhysical Network Planning Multiple Paths Between Network Nodes Planning Guidelines for Individual Peer GroupsMultiple Links Between Adjacent Peer Groups Multiple Links to an External NetworkPlanning Guidelines for Peer Group Leaders Planning Guidelines for Hierarchical NetworksPlanning Guidelines for Border Nodes Part Number OL-3847-01 Rev. D0, April Address Planning Overview Address and Closed User Group PlanningPnni Addressing Example Selecting an ATM Address Format Planning Address Configuration SettingsESI SEL IDP DSP Supported Address FormatsGuidelines for Selecting an Address Format ATM Field Description Default ValuesDCC Selecting a Pnni LevelAddress Registration Authorities Category Type Authorities4shows an example topology of a Pnni MPG WAN Part Number OL-3847-01 Rev. D0, April Level Peer Group ID Portion of ATM Address Bytes LengthSelecting the Pnni Peer Group ID Default Peer Group ID20-byte Node Address Selecting the ATM AddressSelecting the Spvc Address Prefix Selecting the Ilmi Address PrefixPlanning Address Prefixes for Aini and Iisp Links Additional Guidelines for Creating an Address Plan Selecting Static Addresses for UNI PortsClosed User Group Example Closed User Group OverviewSelecting an Interlock Code Planning CUG Configuration SettingsSelecting an Index Selecting CPE Addresses Selecting Internal CUG Access OptionsSpecifying a Preferential CUG Selecting External CUG Access OptionsWorksheets Selecting a Default CUG AddressCUG 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 Traffic Metric Class of Service TablesService Class Acronym Definition Guidelines CTD CDVHow SPVCs and SPVPs use the SPTs How SVCs and SVPs use the SPTsOn-Demand Routing How MGX and SES Nodes Select LinksLoad Balancing for SPT and On-Demand Routing CLR0+12 Additional Routing Features in MGX and SES NodesService Preferred RoutingGrooming Priority RoutingNodal Point-to-Multipoint Branch Restriction Soft ReroutingPriority Bumping Blocking Pass-Through ConnectionsAXSM-XG AXSM/AAXSM/B AXSM-EFarthest Node Branching Part Number OL-3847-01 Rev. D0, April Ansi APS ABRAesa AiniIN-2 P2MPCBR CTDIN-3 CUGCWM DININ-4 IN-5 PGLPnni MGX SESIN-6 IN-7 UBRUNI TACIN-8
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