Tài liệu Access-Dial Technical Tips pdf

Cisco - Access-Dial Technical Tips

Access-Dial Technical Tips

● Asynchronous Connectivity ● Modems

● ISDN ● Dial on Demand Routing (DDR)

● Point-to-Point Protocol (PPP) ● Authentication, Authorization, and Accounting

(AAA)

● T1/E1 ● VPDN

● General ● Access Products

Access Related Links

● Access DSL ● Access VPN and Cisco Secure

● Broadband Cable ● Access Dial Top Issues

● Technology Support Page ● Product Support Page

Asynchronous Connectivity

This section includes terminals, async interfaces, comm/terminal servers, and aux/console port connections.

● Sample Configurations

❍ Configuring a Comm/Terminal Server for Router Console Access

❍ Setting up a Comm/Terminal Server for Sun Console Access

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❍ Printing to a Comm Server on IBM AIX

❍ How to Tunnel Async Data

❍ AUX Back-to-Back

❍ Sample Configuration - DDR Auxport Dial Backup

❍ Configuring EXEC Callback

❍ Async-PPP Callback Between an Access Server and a PC

❍ DNIS and Modem Pooling With a PRI Line

❍ WINS/DHCP on an AS5200

❍ VTY Async Sample Configuration

❍ Cisco Access Dial Configuration Cookbook

● Tech Notes

❍ Modem-Router Connection Guide

❍ Attaching a US Robotics Modem to the Console Port of a Cisco Router

❍ Cabling Guide for RJ-45 Console and AUX Ports

❍ Console Port Problem on Cisco 2500

❍ How Async Lines are Numbered in Cisco 3600 Series Routers

❍ Using service tcp-keepalives to Clear Hung Telnet Sessions

❍ TN3270 on an AS5200

❍ Characters Supported in Dialer String (V.25bis)

● Troubleshooting

❍ Dialup Technology: Troubleshooting Techniques

● FAQs

❍ RTS and DTR: Why They Might Toggle

❍ Interfacing TAs and V.25bis

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Modems

This section includes information on using external modems, and internal modems, such as Microcom, MICA,

and Nextport.

● Sample Configurations

❍ Configuring Modem Connectivity with a Cisco 3640 BRI

❍ Async Backup with Dialer Profiles

❍ Configuring DDR to Backup an Async Connection

❍ DNIS and Modem Pooling With a PRI Line

❍ DNIS and Modem Pooling Using a CAS T1 Line

❍ Modem-Pooling With DNIS

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❍ Router-to-Router Async Multilink PPP

❍ Async Multilink PPP Dialup from Microsoft Windows® Clients

❍ Configuring EXEC Callback

❍ Async-PPP Callback Between an Access Server and a PC

❍ Cisco Access Dial Configuration Cookbook

● Tech Notes

❍ Modem-Router Connection Guide

❍ Attaching a US Robotics Modem to the Console Port of a Cisco Router

❍ Configuring Modem Recovery

❍ Overview of General Modem and NAS Line Quality

❍ Configuring Client Modems to Work with Cisco Access Servers

❍ Client Modem Firmware Overview

❍ MICA Modem States and Disconnect Reasons

❍ Comparing NextPort SPE Commands to MICA Modem Commands

❍ Dialup Technology: Overviews and Explanations

❍ Windows 95 with CHAP Authentication

● Troubleshooting

❍ Dialup Technology: Troubleshooting Techniques

❍ Using Customer Dial-in Lab to test your connection

❍ Testing Async DDR into the San Jose Dial-in Lab

● FAQs

❍ Dialout Utility Frequently Asked Questions

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ISDN

This section covers Integrated Services Digital Network (ISDN) technologies such as Basic Rate Interface (BRI)

and Primary Rate Interface (PRI)

● Sample Configurations

❍ Configuring ISDN DDR with Dialer Profiles

❍ Sample Configuration - BRI Rotary Group

❍ Configuring ISDN BRI using the ip unnumbered Command

❍ Static Routes over Unnumbered BRI Interfaces

❍ Dial-on-demand Routing (DDR) with Easy IP

❍ Configuring Easy IP

❍ BRI-to-BRI Connection using Data Over Voice

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❍ Configuring ISDN BRI to PRI using Multilink PPP to Aggregate Physical Interfaces

❍ Snapshot Routing over ISDN

❍ Basic AS5200 with Two PRIs

❍ Basic AS5300 with Four PRIs

❍ AS5300 Supporting ISDN v.120 Calls

❍ AS5300 Supporting ISDN v.120 Calls with a Virtual Template

❍ Configuring NFAS with Four T1s

❍ DDR Backup using BRIs and the backup interface Command

❍ Configuring BRI Backup Interface with Dialer Profiles

❍ Configuring BRI-to-BRI Dialup with DDR Dialer Maps

❍ Configuring DDR Backup using BRIs and Dialer Watch

❍ Configuring ISDN Backup for Frame Relay

❍ Configuring Frame Relay Backup

❍ Scalable ISDN Backup Strategy for Large OSPF Networks

❍ Backup Bridging over ISDN

❍ Time-Based ISDN/Async (Legacy) DDR

❍ PPP Callback Over ISDN

❍ ISDN Authentication and Callback with Caller ID

❍ Bridging Across ISDN

❍ ISDN Sample Configuration -Bridging

❍ PPP Half-Bridging

❍ Cisco IOS™ Router to Ascend Access Server

❍ Sample Configuration- AppleTalk

❍ AppleTalk over ISDN with DDR

❍ Cisco Access Dial Configuration Cookbook

● Tech Notes

❍ Dialup Technology: Overviews and Explanations

❍ ISDN Debug Information

❍ Configuring the Basic Rate Interface (BRI) for ISDN in Germany

❍ Configuring ISDN for Australia

❍ Configuring the Basic Rate Interface (BRI) for ISDN Leased Lines in Spain (NOVACOM)

❍ Capabilities of Typical ISDN Switches

❍ ISDN Glossary

● Troubleshooting

❍ Dialup Technology: Troubleshooting Techniques

❍ Using the show isdn status Command for BRI Troubleshooting

❍ Troubleshooting ISDN BRI Layer 1

❍ Troubleshooting ISDN BRI Layer 2

❍ Troubleshooting ISDN BRI SPIDs

❍ Understanding debug isdn q931 Disconnect Cause Codes

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❍ T1 Troubleshooting Flowcharts

❍ T1 PRI Troubleshooting

❍ Troubleshooting ISDN and DDR

❍ Troubleshooting ISDN Connections

● FAQs

❍ What is the Difference Between ISDN Point-to-Point and ISDN Multipoint on an AT&T 5ESS

Switch?

❍ Why Doesn't OSPF Form Adjacency on a PRI, BRI or Dialer Interface?

❍ SETUP_ACK Workaround

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Dial on Demand Routing (DDR)

Articles found here cover using DDR for on-demand dial connectivity, backup to a WAN link and callback.

● Sample Configurations

❍ Configuring ISDN DDR with Dialer Profiles

❍ AS5300 Dialing out with ISDN/Async (Outbound DDR)

❍ Dial-on-demand Routing (DDR) with Easy IP

❍ Easy IP

❍ ISDN DDR Using HDLC Encapsulation

❍ Async Backup with Dialer Profiles

❍ Configuring BRI Backup Interface with Dialer Profiles

❍ Configuring DDR Backup using BRIs and Dialer Watch

❍ DDR Backup using BRIs and the backup interface Command

❍ Configuring BRI-to-BRI Dialup with DDR Dialer Maps

❍ Configuring ISDN DDR Backup for Frame Relay

❍ Configuring Frame Relay Backup

❍ Configuring DDR to Backup an Async Connection

❍ DDR Auxport Dial Backup

❍ Backup Bridging over ISDN

❍ Configuring Dialer Profiles to Bridge using ISDN

❍ Bridging with Dialer Profiles

❍ Configuring EXEC Callback

❍ AUX Back-to-Back

❍ Snapshot Routing

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❍ Using Floating Static Routes and Dial-on-Demand Routing

❍ Time-Based ISDN/Async (Legacy) DDR

❍ AppleTalk over ISDN with DDR

❍ Cisco Access Dial Configuration Cookbook

● Tech Notes

❍ Dialup Technology: Overviews and Explanations

❍ Multilink PPP for DDR - Basic Configuration and Verification

❍ Restrictions for the dialer max-link 1Command and MPPP

❍ Evaluating Backup Interfaces, Floating Static Routes, and Dialer Watch for DDR Backup

❍ Deciding and Preparing to Configure DDR

❍ Dialer Profiles Operation

● Troubleshooting

❍ Dialup Technology: Troubleshooting Techniques

❍ Troubleshooting ISDN and DDR

❍ Using Customer Dial-in Lab to test your connection

❍ Testing Async DDR into the San Jose Dial-in Lab

● FAQs

❍ Snapshot Routing: Frequently Asked Questions

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Point-to-Point Protocol (PPP)

This section covers normal PPP dialup, Multlink PPP, Multichassis MPPP, and PPP Callback.

● Sample Configurations

❍ Configuring PPP Dial-up

❍ Cisco CHAP/PAP Call-in

❍ AS5300 Configured for MLP on Async and ISDN

❍ Async Multilink PPP Dialup from Microsoft Windows® Clients

❍ Router-to-Router Async Multilink PPP

❍ Multilink PPP on Back-to-back Routers with Multiple Serial Interfaces

❍ Inverse MUX Application using Multilink PPP

❍ Multilink Via Virtual-Template on Two Serial Interfaces

❍ Multilink PPP Across Two Serial Physical-layer Async Interfaces

❍ Multichassis Multilink PPP with AS5300s

❍ Multichassis Multilink PPP with Cisco AS5300s and an Offload Server

❍ Configuring L2TP Multihop to Perform MMPPP in the LNS

❍ Sample Configuration - APPN over PPP Multilink

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❍ Async-PPP Callback Between an Access Server and a PC

❍ PPP Callback with Local Authentication

❍ PPP Callback Over ISDN

❍ PPP Callback with RADIUS

❍ PPP Callback with TACACS+

❍ PPP Half-Bridging

❍ How to Setup PPP Idle Timeout For Async Using RADIUS

❍ Access Server Dial-In IP/PPP Configuration With Dedicated V.120 PPP

❍ Cisco Access Dial Configuration Cookbook

● Tech Notes

❍ Dialup Technology: Overviews and Explanations

❍ PPP Authentication Using the ppp chap hostname and ppp authentication chap callin

Commands

❍ Common Problems in Debugging RADIUS, PAP and CHAP

❍ CHAP or ARAP With TACACS+:Interoperability Problems With One-Time Password Systems

❍ Multilink PPP for DDR - Basic Configuration and Verification

❍ How to Speed Up the Addition of ISDN B Channels to a Multilink PPP Bundle

❍ Criteria for Naming Multilink PPP Bundles

❍ Restrictions for the dialer max-link 1Command with Multilink PPP

❍ Microsoft Windows 2000 PCs with MPPP Connections Experience Low Throughput

❍ Multichassis Multilink PPP (MMP)

❍ Access Server Dial-In IP/PPP Configuration With Dedicated V.120 PPP

❍ Connecting 3Com to Cisco via PPP

❍ Stampede for PC Dialin Access

❍ PPP Per-User Timeouts

❍ Virtual Access PPP Features in Cisco IOS

● Troubleshooting

❍ Dialup Technology: Troubleshooting Techniques

❍ Troubleshooting Async Multilink PPP Operations

❍ Using Customer Dial-in Lab to test your connection

❍ Testing Async DDR into the San Jose Dial-in Lab

● FAQs

❍

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Authentication, Authorization, and Accounting (AAA)

This section covers configuring the Access Servers (NAS) for router-based(local) AAA and Server-based AAA

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(Radius and Tacacs+). However it does not cover specific Radius and Tacacs+ server configuration issues.

● Sample Configurations

❍ Implementing Local AAA

❍ Implementing Server-Based AAA

❍ Basic RADIUS

❍ Advanced RADIUS

❍ Radius Dial-Up Sample Config

❍ Basic TACACS+

❍ Advanced TACACS+

❍ TACACS+ Dial-Up Sample Config

❍ Configuring Large Scale Dialout Using TACACS+

❍ Implementing Server-Based AAA Accounting

❍ AAA Device Configuration Samples

❍ How To Apply Access Lists to Dial Interfaces with a RADIUS Server

❍ How to Setup PPP Idle Timeout For Async Using RADIUS

● Tech Notes

❍ PPP Per-User Timeouts

❍ Using AAA Server to Manage IP Pools in a Network Access Server

❍ TACACS+ and RADIUS Comparison

❍ Double Authentication Design and Implementation Guide

❍ RADIUS/TACACS+ Technical Tips

● Troubleshooting

❍ Diagnosing and Troubleshooting AAA Operations

❍ Common Problems in Debugging RADIUS, PAP and CHAP

● FAQs

❍

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T1/E1

This section covers configuring and troubleshooting T1s and E1s

● Sample Configurations

❍ Configuring ISDN BRI to PRI using Multilink PPP to Aggregate Physical Interfaces

❍ ISDN NFAS Primary and Backup D Channel

❍ Configuring NFAS with Four T1s

❍ DNIS and Modem Pooling With a PRI Line

❍ Cisco Access Dial Configuration Cookbook

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● Tech Notes

❍ Dialup Technology: Overviews and Explanations

❍ E1 R2 Signaling Theory

❍ E1 R2 Customization with the cas-custom Command

❍ Understanding the show controller e1 Command

❍ Configuring Cisco Integrated Data Service Unit/Channel Service Unit (DSU/CSU) Modules and

WAN Interface Cards

● Troubleshooting

❍ T1 Troubleshooting Flowcharts

❍ T1 Layer 1 Troubleshooting

❍ T1 Alarm Troubleshooting

❍ T1 Error Events Troubleshooting

❍ T1 PRI Troubleshooting

❍ Loopback Tests for T1/56K Lines

❍ E1 Troubleshooting Flowcharts

❍ E1 Layer 1 Troubleshooting

❍ E1 Alarm Troubleshooting

❍ E1 Error Events Troubleshooting

❍ E1 PRI Troubleshooting

❍ E1 R2 Signaling Configuration and Troubleshooting

❍ Hard Plug Loopback Tests for E1 Lines

❍ Dialup Technology: Troubleshooting Techniques

● FAQs

❍ Line Coding Information

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Virtual Private Dialup Networks (VPDN)

This section covers configuring L2TP and L2F VPDN using Radius, Tacacs+ and router-based authentication.

● Sample Configurations

❍ Configuring a Basic Virtual Private Dialup Network (VPDN)

❍ Advanced Virtual Private Dialup Network

❍ Advanced Virtual Private Dialup Network Configuration

❍ Detailed Scenario for Access VPDN Dial-in Using L2TP

❍ Configuring Virtual Private Dialup Networks

❍ How-To Configure RADIUS Authentication for VPDNs

❍ How-To Configure TACACS+ Authentication for VPDNs

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❍ How-To Configure Layer 2 Tunnel Protocol Authentication with RADIUS

❍ How-To Configure Layer 2 Tunnel Protocol Authentication with TACACS+

❍ Basic Dial-in VPDN Configuration Using VPDN Groups

❍ Dial-in VPDN Configuration Using VPDN Groups and TACACS+

❍ Configuring L2TP Multihop to Perform MMPPP in the LNS

❍ Configuring L2TP Multihop to Perform Several Hops from the NAS to the LNS

❍ Cisco Access Dial Configuration Cookbook

● Tech Notes

❍ Adding Multiple Cisco AV-Pairs to a User Profile

❍ Understanding Virtual Private Dialup Network (VPDNs)

❍ Domain Stripping Hack

❍ Layer 2 Tunnel Protocol

❍ Security Technical Tips: Internetworking

● Troubleshooting

❍

● FAQs

❍

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General

● Changing the IP Address on the Media Gateway Access Controller

● The [email protected] Alias

● Floating Static Route to a Null Interface

● Using service tcp-keepalives to Clear Hung Telnet Sessions

● Troubleshooting Access Lists on Dial Interfaces

● Connecting a Windows 95 Client to a Windows NT Server through a Cisco Router

● WINS/DHCP on an AS5200

● PPP Half-Bridging

● Suppressing Messages on Async Lines

● Dialout Utility Frequently Asked Questions

● TN3270 on an AS5200

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Access Products

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Cisco - Access-Dial Technical Tips

For general information not specific to access-dial technologies concerning these and other Cisco Routers, refer

to the Router Issues main index page

● 700 Series ● 1000

Series ● 1600 Series ● 1700 Series ● 2500 Series

● 2600

Series

● 3600

Series ● AS5200/5300 ● AS5350/AS5400 ● AS5800

● Network

Modules

● WAN

Interface

Cards

(WICs)

● IOS Installation

and Upgrade

● Boot Failure

Recovery

● Password

Recovery

700 Series

● Cisco 700 Not Responding to Cisco Fast Step Version 1

● Cisco 700 Connectivity Problems

● Cisco 700 Series Frequently Asked Questions

● Configuring the Cisco 753 and Cisco 1004 to Dial In to a Cisco AS5200 Access Server

1000 Series

● Enabling the IPX Option on the Cisco 1020

● Accessing the EXEC of the Cisco 1020

1600 Series

● Troubleshooting the 1600

● Wan Interface Cards

1700 Series

●

2500 Series

● Cisco 2509-2512 Cab-Octal Pinouts

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● Console Port Problem on Cisco 2500

● Configuring Integrated Data Service Unit/Channel Service Unit (DSU/CSU) Modules and WAN

Interface Cards

2600 Series

● Wan Interface Cards (WICs)

3600 Series

● How Async Lines are Numbered in Cisco 3600 Series Routers

● Configuring Modem Connectivity with a Cisco 3640 BRI

● Wan Interface Cards

AS5200/AS5300 Series

● Commissioning the Cisco AS5300 Hardware

● Cisco AS5x00 Case Study for Basic IP Modem Services

AS5350/AS5400 Series

● Commissioning the Cisco AS5400 Hardware

● Cisco AS5x00 Case Study for Basic IP Modem Services

● Comparing NextPort SPE Commands to MICA Modem Commands

AS5800 Series

● Commissioning the Cisco AS5800 Hardware

● Cisco AS5x00 Case Study for Basic IP Modem Services

● Cisco IOS Software Commands for Cisco AS5800 Hardware Inspection

Network Modules

● Performance Maximums of the 4T

WICs

● Configuring Integrated Data Service Unit/Channel Service Unit (DSU/CSU) Modules and WAN

Interface Cards

● WAN Interface Cards for the Cisco 3600 Series

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