Cisco 1003 - 1003 Router Manual do Utilizador Página 1

CHAPTER Designing ISDN Internetworks 11-111Designing ISDN InternetworksIntegrated Services Digital Network (ISDN) services are becoming more prevalent

11-10 Internetwork Design GuideDial-on-Demand RoutingConfiguring IP DDR over ISDNIn Figure 11-3, Router A dials Router B and Router B dials Router A ov

Designing ISDN Internetworks 11-11Dial-on-Demand RoutingIP Dialer ListsThe dialer-list list global configuration command defines interesting packets. A

11-12 Internetwork Design GuideDial-on-Demand RoutingEncapsulation and AuthenticationISDN interfaces can be configured for High-Level Data Link Control

Designing ISDN Internetworks 11-13Dial-on-Demand RoutingIP Address Negotiation for ISDNIP address negotiation allows remote node PPP client software

11-14 Internetwork Design GuideDial-on-Demand RoutingThe core router can assign IP addresses from a local pool maintained by the core router or from a

Designing ISDN Internetworks 11-15Dial-on-Demand RoutingTACACS+ Address AssignmentThe TACACS+ server can be configured to assign the remote node’s IP

11-16 Internetwork Design GuideDial-on-Demand RoutingAppleTalk Dialer ListsAppleTalk dialer lists are similar to IP dialer lists. They can be used in

Designing ISDN Internetworks 11-17Dial-on-Demand RoutingSample AppleTalk ConfigurationThe following configurations for Router A and Router B use DDR to

11-18 Internetwork Design GuideDial-on-Demand RoutingFor information about optimizing AppleTalk connections over ISDN, see the sections “TariffManagem

Designing ISDN Internetworks 11-19Dial-on-Demand RoutingIPX Dialer ListsIPX dialer lists are similar to IP dialer lists. They can be used in two ways

11-2 Internetwork Design GuideIntroductionThe topology shown in Figure 11-1 includes all of the Cisco routers that can be configured for ISDN.In Figure

11-20 Internetwork Design GuideDial-on-Demand RoutingSample IPX ConfigurationThe following configurations for Router A and Router B use DDR to enable IP

Designing ISDN Internetworks 11-21Tariff Managementdialer map ip 171.68.158.25 name RouterA speed 64 14085551111dialer map appletalk 7360.25 name Rou

11-22 Internetwork Design GuideTariff ManagementRoutingRouting protocols can generate traffic that causes connections to be made unnecessarily. Thefoll

Designing ISDN Internetworks 11-23Tariff ManagementWhen the client router transitions from the quiet period to the active period, the line might be d

11-24 Internetwork Design GuideTariff ManagementFigure 11-7 Enhanced IGRP-Based Network with RIP for ISDN LinksThe following partial configuration show

Designing ISDN Internetworks 11-25Tariff Managementforth. The distribute-list in command causes the router to use access list 1 to filter networks lea

11-26 Internetwork Design GuideTariff ManagementSNMP PacketsAlthough SNMP can provide useful information about ISDN connections and how they are used,

Designing ISDN Internetworks 11-27Tariff ManagementControlling IPX Watchdog PacketsNetWare servers send “watchdog” packets to clients and disconnect

11-28 Internetwork Design GuidePerformancePerformanceThis section describes the following techniques for using multiple B channels:• Bandwidth on Dema

Designing ISDN Internetworks 11-29Performancein length are subject to fragmentation.) When the fragments of packets A and B arrive at thereceiving ro

Designing ISDN Internetworks 11-3Introductionbe running on the PC. These features make the Cisco AccessPro PC card suitable for smallbusinesses and h

11-30 Internetwork Design GuidePerformanceCompressionThe Point-to-Point (PPP) Compression Control Protocol (CCP) is an Internet Engineering TaskForce

Designing ISDN Internetworks 11-31PerformanceIn Figure 11-9, a leased line connects Router A to Router B, and BRI 0 on Router B is used as abackup li

11-32 Internetwork Design GuideSecuritySecurityISDN includes several features that you can use to increase the security of ISDN connections:• Callback

Designing ISDN Internetworks 11-33Network ManagementThe isdn caller interface configuration command configures caller ID screening. For example, thefol

11-34 Internetwork Design GuideSummaryThe Cisco Call History MIB stores call information for accounting purposes. The goal is to providea historical v

11-4 Internetwork Design GuideIntroductionCentral Office ConsiderationsWhen designing your ISDN network, you need to consider the central office switche

Designing ISDN Internetworks 11-5IntroductionTable 11-2 ISDN Switches in Australia, Europe, Japan, and New ZealandTable 11-3 lists the ISDN-capable s

11-6 Internetwork Design GuideIntroductionThe AT&T 5ESS switch supports up to eight SPIDs per BRI. Because multiple SPIDs can be appliedto a singl

Designing ISDN Internetworks 11-7IntroductionISDN InterfacesISDN provides multiple data channels—two B channels for BRI service (2B+D), 23 B channels

11-8 Internetwork Design GuideIntroductionFor T1 PRI, when the timeslots keyword is not specified, the pri-group command defaults to23 B channels with

Designing ISDN Internetworks 11-9Dial-on-Demand RoutingDial-on-Demand RoutingISDN is a circuit-switched technology. Like the analog telephone network