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Cisco Router 800 Series Software Configuration Guide

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Page 181

 
4-43
Cisco 800 Series Software Configuration Guide
78-5372-06
Chapter 4      Network Scenarios
Configuring Dial Backup over the ISDN Interface
ip address negotiated
ip mtu 1492
encapsulation ppp
dialer pool 2
dialer-group 2
!
ip classless
no cdp enable
!Primary and backup interface given route metric (This example using 
static routes, thus atm0 line protcol must be brought down for backup 
interface to function.)
ip route 0.0.0.0 0.0.0.0 22.0.0.2
ip route 0.0.0.0 0.0.0.0 192.168.2.2 150
ip http...

Page 182

 
Chapter 4      Network Scenarios
Configuring Dial Backup over the ISDN Interface
4-44
Cisco 800 Series Software Configuration Guide
78-5372-06 pppoe-client dial-pool-number 2
!
dsl operating-mode auto
!
! Dial backup interface, associated with physical BRI0 interface. 
Dialer pool 1 associates it with BRI0’s dialer pool member 1. Note 
“dialer watch-group 1” associates a watch list with corresponding 
“dialer watch-list” command
interface Dialer0
ip address negotiated
encapsulation ppp
dialer pool 1...

Page 183

 
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Cisco 800 Series Software Configuration Guide
78-5372-06
Chapter 4      Network Scenarios
Configuring Dial Backup over the ISDN Interface
Configuring the Aggregator and ISDN Peer Router
The aggregator is typically a concentrator router where the Cisco 836 router ATM 
PVC will terminate. In the configuration example shown below, the aggregator is 
configured as a PPPoE server to correspond with the Cisco 836 router 
configuration example that is given on page 4-41 and page 4-42.
The ISDN peer...

Page 184

 
Chapter 4      Network Scenarios
Configuring Dial Backup over the ISDN Interface
4-46
Cisco 800 Series Software Configuration Guide
78-5372-06 ip classless
ip route 0.0.0.0 0.0.0.0 22.0.0.1 50
ip route 0.0.0.0 0.0.0.0 30.1.1.2.80
The following is a configuration example of an ISDN peer router used in the 
Cisco 836 router network. 
!
isdn switch-type basic-net3
!
interface Ethernet0
ip address 30.1.1.2 255.0.0.0 
!
interface BRI0
description “to 836-dialbackup”
no ip address
encapsulation ppp
dialer...

Page 185

 
4-47
Cisco 800 Series Software Configuration Guide
78-5372-06
Chapter 4      Network Scenarios
Configuring Dial Backup over the ISDN Interface
Configuration Example
The following configuration example for a Cisco SOHO 97 router specifies the IP 
address for the ATM interface via PPP/IPCP address and supports dial-in 
maintenance over the console port. 
!
!Remote management account
username dialin password cisco
modemcap entry MY_USR_MODEM:MSC=&F1S0=1
!
interface Ethernet0
 ip address 192.168.1.1...

Page 186

 
Chapter 4      Network Scenarios
Configuring Dial Backup over the ISDN Interface
4-48
Cisco 800 Series Software Configuration Guide
78-5372-06  async dynamic routing
 async mode dedicated
 pap authentication pap callin
peer default ip address 192.168.2.2
!
ip nat inside source list 101 interface Dialer1 overload
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer1 150
!
no ip http server
ip pim bidir-enable
!
!
access-list 101 permit ip 192.168.0.0 0.0.255.255 any
dialer-list 1 protocol ip permit
!
line con...

Page 187

 
4-49
Cisco 800 Series Software Configuration Guide
78-5372-06
Chapter 4      Network Scenarios
Configuring Dial Backup over the ISDN Interface
Figure 4-11 Cisco 831 Router Dial Backup and Remote Management in a DSL Modem Environment
Follow the steps below to configure dial backup and remote management for the 
Cisco 831 router. Callout 
Number Description
1Main WAN link; primary connection to Internet service provider
2Dial backup; serves as a failover link when primary line goes down
3Remote...

Page 188

 
Chapter 4      Network Scenarios
Configuring Dial Backup over the ISDN Interface
4-50
Cisco 800 Series Software Configuration Guide
78-5372-06
Configuration Example for the Cisco 831 Router
The following example configures dial backup and remote management on a 
Cisco 831 router. 
!
version 12.2
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Router
!
Step 5chat-script Dialout ABORT ERROR 
ABORT BUSY ““ “AT” OK “AT D T  
5555102 T”...

Page 189

 
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Cisco 800 Series Software Configuration Guide
78-5372-06
Chapter 4      Network Scenarios
Configuring Dial Backup over the ISDN Interface
memory-size iomem 20
enable password cisco
!
ip subnet-zero
ip name-server 206.13.28.12
ip name-server 206.13.31.12
ip name-server 63.203.35.55
ip dhcp excluded-address 192.168.1.1
!
ip dhcp pool 1
import all
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
!
ip audit notify log
ip audit po max-events 100
vpdn enable
!
vpdn-group 1
request-dialin...

Page 190

 
Chapter 4      Network Scenarios
Configuring Dial Backup over the ISDN Interface
4-52
Cisco 800 Series Software Configuration Guide
78-5372-06 dialer pool-member 3
async default routing
async dynamic routing
async mode dedicated
ppp authentication pap callin
!
! Primary wan link
interface Dialer1
ip address negotiated
ip mtu 1492
ip nat outside
encapsulation ppp
dialer pool 1
ppp authentication pap callin
ppp pap sent-username account password 7 pass
ppp ipcp dns request
ppp ipcp wins request
ppp ipcp...
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