Cisco Systems Router 1800 Series User Manual

 
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Chapter 13      Configuring Dial Backup and Remote Management
  Dial Backup Feature Limitations
Dial Backup Feature Limitations
The following limitation exists for the dial backup feature: bridging is not supported over console or 
auxiliary port backup interfaces.
Ta b l e 13-1 summarizes dial backup support and limitations for the Cisco 1800 series integrated services 
fixed-configuration routers.
Step...

 
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Configuration Example
The following three examples show sample configurations for the three dial backup methods.
Example 13-1 Configuring Dial Backup Using Backup Interfaces
!
vpdn enable!
vpdn-group 1
accept-dialinprotocol pppoe
!
!Specifies the ISDN switch typeisdn switch-type basic-net3
!
interface vlan 1ip...

 
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!dsl operating-mode auto
!
! Dial backup interface, associated with physical BRI0 interface. Dialer pool 1 associates 
it with BRI0’s dialer pool member 1
interface Dialer0
ip address negotiatedencapsulation ppp
dialer pool 1
dialer idle-timeout 30dialer string 384040
dialer-group 1
!! Primary interface...

 
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Chapter 13      Configuring Dial Backup and Remote Management
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dsl operating-mode auto!
! Dial backup interface, associated with physical BRI0 interface. Dialer pool 1 associates 
it with BRI0’s dialer pool member 1
interface Dialer0
ip address negotiated
encapsulation pppdialer pool 1
dialer idle-timeout 30
dialer string 384040dialer-group 1
!
! Primary interface...

 
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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...

 
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Chapter 13      Configuring Dial Backup and Remote Management
  Configuring Dial Backup and Remote Management Through the ISDN S/T Port
Perform these steps to configure your router ISDN interface for use as a backup interface, beginning in 
global configuration mode:
CommandPurpose
Step 1isdn switch-type switch-type
Example:
Router(config)# isdn switch-type basic-net3
Router(config)#
Specifies the ISDN...

 
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Chapter 13      Configuring Dial Backup and Remote Management
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Step 8ip address negotiated
Example:
Router(config-if)# ip address negotiatedRouter(config-if)#
Specifies that the IP address for the interface is 
obtained through PPP/IPCP (IP Control Protocol) 
address negotiation. The IP address is obtained 
from the peer.
Step...

 
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Configure the Aggregator and ISDN Peer Router
The aggregator is typically a concentrator router where your Cisco router ATM PVC terminates. In the 
configuration example shown below, the aggregator is configured as a PPPoE server to correspond with 
the Cisco
 876 router...

 
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dialer string 384020dialer-group 1
peer default ip address pool isdn
!ip local pool isdn 192.168.2.1
ip http server
ip classlessip route 0.0.0.0 0.0.0.0 192.168.2.1
ip route 40.0.0.0 255.0.0.0 30.1.1.1
!dialer-list 1 protocol ip permit
!
Configuring Dial Backup and Remote...

 
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Step 4dialer in-band
Example:
Router(config-if)# dialer in-bandRouter(config-if)#
Specifies support for dial-on-demand routing 
(DDR) and chat scripts on this asynchronous 
interface.
Step 5dialer string dial-string
Example:
Router(config-if)# dialer string 
T14085551234...