Cisco Router 826 Routers Software Configuration Guide

  
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Cisco 826, 827, 828, 831, 836, and 837 and Cisco SOHO 76, 77, 78, 91, 96, and 97 Routers Software Configuration Guide
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Chapter 2      Network Scenarios
Configuring Dial Backup
ip nat inside source route-map secondary interface Dialer3 overload
ip classless
!
! When primary link is up again, distance 50 will override 80 if dial backup hasn’t 
timeout
! Multiple routes because peer ip address are alternated among them when CPE gets 
connected
ip route 0.0.0.0 0.0.0.0 64.161.31.254 50
ip...

  
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Cisco 826, 827, 828, 831, 836, and 837 and Cisco SOHO 76, 77, 78, 91, 96, and 97 Routers Software Configuration Guide
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Chapter 2      Network Scenarios
Configuring Dial Backup
login
!
scheduler max-task-time 5000
end
Configuring Remote Management for the Cisco SOHO 91 Router
Follow the steps below to configure remote management for the Cisco SOHO 91 router.
Configuration Example
The following example shows how to configure a Cisco SOHO 91 router to obtain the IP address for 
ATM...

  
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Cisco 826, 827, 828, 831, 836, and 837 and Cisco SOHO 76, 77, 78, 91, 96, and 97 Routers Software Configuration Guide
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Chapter 2      Network Scenarios
Configuring the DHCP Server
dialer-list 1 protocol ip permit
!
line con 0
 exec-timeout 0 0
 modem enable
 stopbits 1
line aux 0
 exec-timeout 0 0
 script dialer Dialout
 modem Dialin
 modem autoconfigure discovery
 transport input all
 stopbits 1
 speed 38400
 flowcontrol hardware
line vty 0 4
 login local
!
scheduler max-task-time...

  
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Cisco 826, 827, 828, 831, 836, and 837 and Cisco SOHO 76, 77, 78, 91, 96, and 97 Routers Software Configuration Guide
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Chapter 2      Network Scenarios
Configuring the DHCP Server
Use the dhcp-interface commands to add, remove, and list the IP addresses of your server’s hardware 
cards. Interfaces are named with the IP address and net mask for the physical device. 
If you have two interface cards for the server host, use two dhcp-interface create commands to register 
them both. Use...

  
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Cisco 826, 827, 828, 831, 836, and 837 and Cisco SOHO 76, 77, 78, 91, 96, and 97 Routers Software Configuration Guide
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Chapter 2      Network Scenarios
Configuring the DHCP Server
 ppp authentication pap callin
 ppp pap sent-username ! USER SPECIFIC password ! USER SPECIFIC
 ppp ipcp dns request
 ppp ipcp wins request
 ppp ipcp mask request
!
Configuring the Central Cisco 3620
The following example configures peer and dial backup on the Cisco 3620 router. 
!
version 12.1
no service...

  
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Cisco 826, 827, 828, 831, 836, and 837 and Cisco SOHO 76, 77, 78, 91, 96, and 97 Routers Software Configuration Guide
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Chapter 2      Network Scenarios
Configuring the DHCP Server
 no cdp enable
!
interface Ethernet0/1
 no ip address
 no ip route-cache
 no ip mroute-cache
 half-duplex
 no cdp enable
!
interface ATM1/0
 no ip address
 no atm ilmi-keepalive
!
interface ATM1/0.1 point-to-point
 pvc 1/40 
  encapsulation aal5mux ppp Virtual-Template1
 !
!
interface ATM1/0.2 point-to-point...

  
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Cisco 826, 827, 828, 831, 836, and 837 and Cisco SOHO 76, 77, 78, 91, 96, and 97 Routers Software Configuration Guide
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Chapter 2      Network Scenarios
Configuring the DHCP Server
!
!
!
line con 0
 exec-timeout 0 0
 transport input none
line aux 0
 exec-timeout 0 0
 no activation-character
 script dialer Dialout
 no vacant-message
 modem InOut
 modem autoconfigure type MY_USR_MODEM
 transport input all
 transport output telnet
 escape-character NONE
 autohangup
 stopbits 1
 speed...

  
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Cisco 826, 827, 828, 831, 836, and 837 and Cisco SOHO 76, 77, 78, 91, 96, and 97 Routers Software Configuration Guide
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Chapter 2      Network Scenarios
Configuring the DHCP Server
Figure 2-12 shows the network topology for this scenario.
Figure 2-12 RFC 1483 Encapsulation with NAT
In this scenario, the small business or remote user on the Ethernet LAN can connect to the Internet 
through ADSL. The Ethernet interface carries the data packet through the LAN and offloads it to the 
RFC...

  
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Cisco 826, 827, 828, 831, 836, and 837 and Cisco SOHO 76, 77, 78, 91, 96, and 97 Routers Software Configuration Guide
78-14565-03
Chapter 2      Network Scenarios
Configuring the DHCP Server
Configuring the Ethernet Interface
Follow the steps below to configure the Ethernet interface, beginning in global configuration mode.
Configuring the ATM Interface
Use this table to configure the ATM interface, beginning in global configuration mode.
Configuring NAT
Follow the steps below to configure NAT,...

  
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Cisco 826, 827, 828, 831, 836, and 837 and Cisco SOHO 76, 77, 78, 91, 96, and 97 Routers Software Configuration Guide
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Chapter 2      Network Scenarios
Configuring the DHCP Server
Configuration Examples
In the following configuration examples, you do not have to enter the commands marked “default.” 
These commands appear automatically in the configuration file generated when you use the show 
running-config command.
The following is an RFC 1483 LLC/SNAP encapsulation over ATM...