Avaya Configuring ATM Half-Bridge Services Uživatelský manuál

BayRS Version 14.00Part No. 308611-14.00 Rev 00September 19994401 Great America ParkwaySanta Clara, CA 95054Configuring ATM Half-Bridge Services

308611-14.00 Rev 00xiTablesTable 1-1. Sample AHB Bridge Table ...1-9

308611-14.00 Rev 00xiii PrefaceThis guide describes asynchronous transfer mode (ATM) Half-Bridge services and what you do to start and customize ATM H

Configuring ATM Half-Bridge Servicesxiv308611-14.00 Rev 00Text ConventionsThis guide uses the following text conventions:bold textIndicates command na

Preface308611-14.00 Rev 00xv AcronymsThis manual uses the following acronyms:AAL ATM adaptation layerADSL asymmetric digital subscriber lineAHB ATM Ha

Configuring ATM Half-Bridge Servicesxvi308611-14.00 Rev 00ITU-T International Telecommunications Union-Telecommunications (formerly CCITT)LAN local ar

Preface308611-14.00 Rev 00xvii Hard-Copy Technical ManualsYou can print selected technical manuals and release notes free, directly from the Internet.

308611-14.00 Rev 001-1 Chapter 1ATM Half-Bridge OverviewThis chapter provides an overview of basic ATM Half-Bridge concepts and the specific ways Nort

ii308611-14.00 Rev 00 Copyright © 1999 Nortel NetworksAll rights reserved. Printed in the USA. September 1999.The information in this document is subj

Configuring ATM Half-Bridge Services1-2308611-14.00 Rev 00Nortel Networks designed AHB to meet the requirements of public network providers who want t

ATM Half-Bridge Overview308611-14.00 Rev 001-3 Figure 1-1. DSL Network with an AHB (BLN/BCN) RouterThe following steps explain how IP packets travel f

Configuring ATM Half-Bridge Services1-4308611-14.00 Rev 004.The ATM network, located at the central office, switches the ATM cells and forwards them o

ATM Half-Bridge Overview308611-14.00 Rev 001-5 Forwarding Outbound Packets to CPE Hosts IP packets received from ISPs or corporate networks that are d

Configuring ATM Half-Bridge Services1-6308611-14.00 Rev 00Figure 1-2 shows how the remote hosts identify the DHCP server on the network.Figure 1-2. Ho

ATM Half-Bridge Overview308611-14.00 Rev 001-7 Figure 1-3. How CPE Hosts Request and Receive IP Addresses from the DHCP ServerDynamically Learning New

Configuring ATM Half-Bridge Services1-8308611-14.00 Rev 00Unsecure Learning MethodAHB learns new bridge entries from any IP and ARP packets it receive

ATM Half-Bridge Overview308611-14.00 Rev 001-9 Maintaining the AHB Bridge TableAHB maintains a bridge table on each slot. The table contains a list of

Configuring ATM Half-Bridge Services1-10308611-14.00 Rev 00Removing Bridge Table Entries AHB removes an existing table entry whenever it adds a new en

ATM Half-Bridge Overview308611-14.00 Rev 001-11 You can use the “forward to next hop” feature to improve reliability. Consider an example where an ISP

308611-14.00 Rev 00iiiNortel Networks NA Inc. Software License AgreementNOTICE: Please carefully read this license agreement before copying or using t

Configuring ATM Half-Bridge Services1-12308611-14.00 Rev 00Using Inbound Packet Filtering AHB uses inbound packet filtering to forward bridge packets

308611-14.00 Rev 002-1 Chapter 2Starting AHB ServicesThis chapter provides instructions for starting AHB services with the default configuration value

Configuring ATM Half-Bridge Services2-2308611-14.00 Rev 00Preparing a Configuration FileTo create a configuration file for AHB, complete the following

Starting AHB Services308611-14.00 Rev 002-3 Configuring an IP Interface on the RouterYou must configure an IP interface on a non-ATM/AHB interface. Th

Configuring ATM Half-Bridge Services2-4308611-14.00 Rev 00Configuring Circuitless IP on the RouterTo operate AHB, you must configure unnumbered IP int

Starting AHB Services308611-14.00 Rev 002-5 Go to the next section to configure AHB services on the router.Configuring AHB ServicesConfiguring AHB ser

Configuring ATM Half-Bridge Services2-6308611-14.00 Rev 00Creating an ATM InterfaceTo create an ATM interface, complete the following tasks:Go to the

Starting AHB Services308611-14.00 Rev 002-7 To add an LLC/SNAP service record, complete the following tasks:Go to the next section, “Adding AHB to the

Configuring ATM Half-Bridge Services2-8308611-14.00 Rev 00To add AHB to an LLC/SNAP service record, complete the following tasks:Next, add PVCs to the

Starting AHB Services308611-14.00 Rev 002-9 Adding PVCs to the LLC/SNAP PVC Service RecordTo add PVCs to the LLC/SNAP service record on the ATM interf

iv308611-14.00 Rev 00for the security of its own data and information and for maintaining adequate procedures apart from the Software to reconstruct

Configuring ATM Half-Bridge Services2-10308611-14.00 Rev 00Next, you must configure BootP to define a forwarding path between a router and a BootP/DHC

Starting AHB Services308611-14.00 Rev 002-11 Site Manager requires that you specify input and output addresses to configure the BootP relay agent on t

Configuring ATM Half-Bridge Services2-12308611-14.00 Rev 00Configuring BootP Preferred ServersYou can configure a BootP preferred server by specifying

Starting AHB Services308611-14.00 Rev 002-13 Specifying the Target Server IP AddressAfter you specify the relay agent IP address, you must specify the

308611-14.00 Rev 003-1 Chapter 3Customizing AHB ServicesWhen you first configure AHB services, default values are in effect for all parameters (see pa

Configuring ATM Half-Bridge Services3-2308611-14.00 Rev 00To enable and disable AHB forwarding on the router, complete the following tasks:Setting the

Customizing AHB Services308611-14.00 Rev 003-3 To set the auto learn method by which AHB learns bridge entries, complete the following tasks:Configuri

Configuring ATM Half-Bridge Services3-4308611-14.00 Rev 00A sample init file (ahb.dat) follows:[SLOT 3]1.3.1.32 255.255.255.0 4 409600 0 0 aaaa030080c

Customizing AHB Services308611-14.00 Rev 003-5 To specify the name of the local init file you want to use, complete the following tasks:Specifying an

308611-14.00 Rev 00vContents PrefaceBefore You Begin ...

Configuring ATM Half-Bridge Services3-6308611-14.00 Rev 00To specify the name of the alternate init file you want to use, complete the following tasks

Customizing AHB Services308611-14.00 Rev 003-7 Enabling and Disabling Inbound Packet FilteringBy default, inbound packet filtering is disabled on the

Configuring ATM Half-Bridge Services3-8308611-14.00 Rev 00Modifying AHB CircuitsYou can modify AHB circuits by changing the AHB circuit parameters loc

Customizing AHB Services308611-14.00 Rev 003-9 Specifying the Subnet Mask for the Learned HostIf you set the learning method on the ATM interface to U

Configuring ATM Half-Bridge Services3-10308611-14.00 Rev 00Enabling and Disabling Proxy ARP on a CircuitBy default, proxy ARP is enabled on the AHB ci

Customizing AHB Services308611-14.00 Rev 003-11 For detailed information about creating traffic filters for source-based routing, refer to Configuring

308611-14.00 Rev 00A-1 Appendix AAHB, BootP/DHCP, IP, and ATMParameter DescriptionsThis appendix contains reference information about customizing AHB

Configuring ATM Half-Bridge ServicesA-2308611-14.00 Rev 00• Instructions for setting the parameter• Management information base (MIB) object IDThe Tec

AHB, BootP/DHCP, IP, and ATM Parameter Descriptions308611-14.00 Rev 00A-3 The AHB global parameter descriptions follow.Parameter: EnablePath: Configur

vi308611-14.00 Rev 00Chapter 2 Starting AHB ServicesNetwork Planning Considerations ...

Configuring ATM Half-Bridge ServicesA-4308611-14.00 Rev 00Parameter: Local Init FilePath: Configuration Manager > Protocols > IP > AHB > G

AHB, BootP/DHCP, IP, and ATM Parameter Descriptions308611-14.00 Rev 00A-5 Parameter: Inbound Packet FilteringPath: Configuration Manager > Protocol

Configuring ATM Half-Bridge ServicesA-6308611-14.00 Rev 00AHB Circuit ParametersUse the following guidelines to configure AHB Circuit parameters in th

AHB, BootP/DHCP, IP, and ATM Parameter Descriptions308611-14.00 Rev 00A-7 Parameter: Learned Host Subnet Mask Path: Configuration Manager > Protoco

Configuring ATM Half-Bridge ServicesA-8308611-14.00 Rev 00BootP Relay Agent Interface Table ParametersUse the following guidelines to configure DHCP p

AHB, BootP/DHCP, IP, and ATM Parameter Descriptions308611-14.00 Rev 00A-9 Parameter: Enable/DisablePath: Configuration Manager > Protocols > IP

Configuring ATM Half-Bridge ServicesA-10308611-14.00 Rev 00BootP Address ParametersUse the following guidelines to configure DHCP parameters in the BO

AHB, BootP/DHCP, IP, and ATM Parameter Descriptions308611-14.00 Rev 00A-11 To access the BOOTP Addresses window, complete the following tasks:The Boot

Configuring ATM Half-Bridge ServicesA-12308611-14.00 Rev 00BootP Relay Agent Preferred Server Table ParametersUse the following guidelines to configur

AHB, BootP/DHCP, IP, and ATM Parameter Descriptions308611-14.00 Rev 00A-13 The BootP relay agent preferred server parameters descriptions follow:Param

308611-14.00 Rev 00viiAppendix A AHB, BootP/DHCP, IP, and ATMParameter DescriptionsAHB Global Parameters ...

Configuring ATM Half-Bridge ServicesA-14308611-14.00 Rev 00BootP Preferred Server Configuration ParametersThe BOOTP Preferred Server Configuration win

AHB, BootP/DHCP, IP, and ATM Parameter Descriptions308611-14.00 Rev 00A-15 IP Configuration ParametersParameter: Target Server IP AddressPath: Configu

Configuring ATM Half-Bridge ServicesA-16308611-14.00 Rev 00Parameter: Transmit Bcast AddrPath: Select IP from the Select Protocols window and click on

AHB, BootP/DHCP, IP, and ATM Parameter Descriptions308611-14.00 Rev 00A-17 ATM Interface Parameter DescriptionsInterface parameters define the state o

Configuring ATM Half-Bridge ServicesA-18308611-14.00 Rev 00Parameter: Use Hardware MAC AddressPath: Configuration Manager > Protocols > ATM >

AHB, BootP/DHCP, IP, and ATM Parameter Descriptions308611-14.00 Rev 00A-19 ATM Service Record Parameter DescriptionsService record parameters define t

Configuring ATM Half-Bridge ServicesA-20308611-14.00 Rev 00Figure A-8. Service Attributes Window Sequence (PVCs)ATM service recordslist windowATM virt

AHB, BootP/DHCP, IP, and ATM Parameter Descriptions308611-14.00 Rev 00A-21 Parameter: Enable/DisablePath: Configuration Manager > Protocols > AT

Configuring ATM Half-Bridge ServicesA-22308611-14.00 Rev 00Parameter: ATM Addr User PartPath: Configuration Manager > Protocols > ATM > Servi

AHB, BootP/DHCP, IP, and ATM Parameter Descriptions308611-14.00 Rev 00A-23 ATM Virtual Channel Link Parameter DescriptionsNote: ATM does not allow dup

Configuring ATM Half-Bridge ServicesA-24308611-14.00 Rev 00Parameter: VCI NumberPath: Configuration Manager > Protocols > ATM > Service Recor

308611-14.00 Rev 00B-1 Appendix BUnderstanding ATM ConceptsThis appendix provides an overview of basic ATM concepts and the specific ways Nortel Netwo

Configuring ATM Half-Bridge ServicesB-2308611-14.00 Rev 00Figure B-1. ATM Cell48-byteinformation field5-byteheaderGeneric flow control (GFC)Virtual pa

Understanding ATM Concepts308611-14.00 Rev 00B-3 The fields in each ATM cell header provide all the information necessary for networking. These fields

Configuring ATM Half-Bridge ServicesB-4308611-14.00 Rev 00A virtual channel is a logical connection between two communicating ATM entities. Each virtu

Understanding ATM Concepts308611-14.00 Rev 00B-5 Permanent Virtual ConnectionsVirtual channels and virtual paths allow you to establish virtual channe

Configuring ATM Half-Bridge ServicesB-6308611-14.00 Rev 00Assigning a Data Encapsulation Type for a PVCWith AHB, you must assign the Logical Link Cont

Understanding ATM Concepts308611-14.00 Rev 00B-7 Multiple PVCsOf the two methods, having multiple PVCs per service record uses network addressing most

Configuring ATM Half-Bridge ServicesB-8308611-14.00 Rev 00Multiple PVCs per service record work best in either fully meshed environments or in nonmesh

Understanding ATM Concepts308611-14.00 Rev 00B-9 Figure B-4. One PVC per Service RecordAssigning one PVC per service record allows you to dedicate a P

308611-14.00 Rev 00ixFiguresFigure 1-1. DSL Network with an AHB Router ...1-3Figure 1-2. How C

308611-14.00 Rev 00Index-1Aacronyms, xvaddingATM circuit, 2-6ATM to the router, 2-9PVCs, 2-9service recordsPVC, 2-7Administrative Stateparameter descr

Index-2308611-14.00 Rev 00DData Encapsulation Typeparameter descriptionservice record, A-21Debug Level parameter, 3-6, A-4DHCPdefining forwarding path

308611-14.00 Rev 00Index-3parametersHybrid/Bridged VC, A-24VCI Number, A-24VPI Number, A-23RRelay Agent IP Address parameter, A-14requirements, 3-1RFC