Cisco Router 800 Series Software Configuration Guide

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Document Title: Cisco 800 Series Software Configuration Guide
Part Number: 78-5372-06 S/W Release (if applicable): 12.2(8)YN
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Cisco 800 Series Software Configuration Guide
Copyright © 2003, Cisco Systems, Inc.
All rights reserved. 
						

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CONTENTS
About This Guidexxvii
Obtaining Documentationxxxiv
World Wide Webxxxiv
Documentation CD-ROMxxxiv
Ordering Documentationxxxiv
Obtaining Technical Assistancexxxiv
Cisco Connection Onlinexxxv
Technical Assistance Centerxxxv
Documentation Feedbackxxxvi
CHAPTER 1Concepts1-1
Overview of Cisco 800 Series and Cisco SOHO Series Routers1-2
ADSL1-4
SHDSL1-5
DNS-Based X.25 Routing1-5
Network Protocols1-6
IP1-6
G.DMT1-7
U-R21-7
Routing Protocol Options1-8
RIP1-8
EIGRP1-9
PPP Authentication Protocols1-9
PAP1-10 
						

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CHAP1-10
TACACS+1-11
Network Interfaces 1-11
Ethernet1-12
ATM1-12
PVC1-12
Dialer Interface1-13
Dial Backup1-14
Backup Interface1-14
Floating Static Routes1-14
Dialer Watch1-15
NAT1-15
Easy IP (Phase 1)1-16
Easy IP (Phase 2)1-17
Cisco Easy VPN Client1-17
VoIP1-18
H.3231-18
Voice Dial Peers1-19
QoS1-20
IP Precedence1-20
PPP Fragmentation and Interleaving1-21
CBWFQ1-21
RSVP1-22
Low Latency Queuing1-22
Committed Access Rate1-23
Rate Limitation1-23
Marking of IP Precedence1-23
Weighted Fair Queuing1-24
Weighted Random Early Detection1-24 
						

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Contents
ATM Traffic Policing1-25
Access Lists1-25
CHAPTER 2Configuring Basic Networks2-1
Before Configuring Basic Networks2-1
Connecting a Private IP Network to the Internet2-3
Features Used2-4
Configuration2-5
Connecting a Public IP Network to the Internet2-12
Features Used2-14
Configuration2-14
Connecting a Remote Office to a Corporate Office2-22
Features Used2-23
Cisco 800 Series Router Configuration2-23
IP Routing Configuration2-29
Corporate Router Configuration2-31
IP Routing Configuration2-34
CHAPTER 3Configuring Advanced Networks3-1
Before Configuring Advanced Networks or Features3-2
Connecting a Private IP Network to the Internet and a Corporate Network3-3
Features Used3-5
Configuring the Cisco 800 Series Router3-6
Configuring the Router at the Corporate Site3-10
Connecting a Remote Network to Two Corporate Networks3-12
Features Used3-13
Configuring the Cisco 800 Series Router3-14
Configuring the Routers at the Corporate Site3-18
Configuring the ISDN Line3-19 
						

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Dial-on-Demand Routing Using Snapshot Routing3-20
Configuration3-20
Verifying the DDR Configuration3-22
Configuring a Leased ISDN Line3-22
Configuring Dynamic Routing3-23
Configuring Routing Information Protocol3-23
Configuring UDP Broadcasts3-23
Configuration of UDP Broadcasts3-24
Configuring DHCP Relay3-25
Configuration of DHCP Relay3-26
Controlling the DDR ISDN Line Activation3-26
UDP Broadcasts in Windows Networks3-27
Configuration of an Extended Access List3-27
UDP Broadcasts in DHCP Relay Environment3-28
Configuration3-28
UDP Broadcasts in NTP Environment3-29
Configuration3-29
IP Traffic3-30
Configuration3-30
Restricting Access to Your Network3-31
Configuration of Extended Access List3-32
CHAPTER 4Network Scenarios4-1
Cisco 827 Router Network Connections4-2
Cisco 837 Router Network Connections4-3
Cisco 831 Router Virtual Private Network Connections4-5
Cisco 836 or Cisco SOHO 96 Network Connection4-6
Internet Access Scenarios4-8
Before You Configure Your Internet Access Network4-9 
						

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Contents
Replacing a Bridge or Modem with a Cisco 827 Router4-9
Configuring the Scenario4-10
Configuration Example4-12
PPP over Ethernet with NAT4-12
Configuring the Virtual Private Dial-Up Network Group Number4-14
Configuring the ATM Interface4-15
Configuring the Dialer Interface4-15
Configuration Example4-16
PPP over Ethernet with NAT Using a Dial-on-Demand PPP-over- Ethernet 
Connection
4-17
Configuring the Virtual Private Dial-Up Network Group Number4-17
Configuring the ATM Interface4-17
Configuring the Dialer Interface4-18
Configuration Example4-19
PPP over ATM with NAT4-19
Configuring the Ethernet Interface4-21
Configuring the Dialer Interface4-21
Configuring the ATM Interface4-22
Configuring NAT4-23
Configuration Example4-23
Configuring Dial Backup over the Console Port4-24
Configuring Dial Backup over the ISDN Interface4-24
Dial Backup Feature Limitations and Configuration4-25
Cisco 836 and 837 Routers and Cisco SOHO 96 and 97 Routers4-25
Cisco 831 and Cisco SOHO 91 Routers4-27
Configuring Dial Backup and Remote Management for the Cisco 837 and 
Cisco SOHO 97 Routers
4-28
Configuring Dial Backup and Remote Management for the Cisco 836 and 
Cisco SOHO 96 Routers
4-29
PPP over ATM with Centrally Managed Addressing and with Dial 
Backup
4-31 
						

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Configuring Dial Backup and Remote Management for the Cisco 837 
Router
4-32
Configuration Example4-33
Configuring Dial Backup and Remote Management for the Cisco 836 
Router
4-36
Configuring the Cisco 836 Router’s ISDN Settings4-37
Configuring Dial Backup and Remote Management Settings4-38
Configuring Backup Interface4-38
Configuring Floating Static Route4-38
Configuring Dialer Watch4-39
Configuration Example4-40
Configuring the Aggregator and ISDN Peer Router4-45
Configuring Remote Management for the Cisco SOHO 97 Router4-46
Configuration Example4-47
Configuring Dial Backup and Remote Management for Cisco 831 Router and 
Cisco SOHO 91 Router
4-48
Configuration Example for the Cisco 831 Router4-50
Configuring Remote Management for the Cisco SOHO 91 Router4-54
Configuration Example4-54
Configuring the DHCP Server4-56
Configuring the Ethernet Interface 4-57
Dynamic Addressing Received via IPCP4-58
Configuring the Central Cisco 36204-58
Configuring the Central RADIUS Server4-61
RFC 1483 Encapsulation with NAT4-62
Configuring the Ethernet Interface4-63
Configuring the ATM Interface4-64
Configuring NAT4-64
Configuration Examples4-65
Integrated Routing and Bridging4-67
Configuring the Default Gateway4-68