Cisco 870-Series Router Manual PDF (Setup & Configuration Guide)

Page 136 / 196 Scroll up to view Page 131 - 135

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Cisco 850 Series and Cisco 870 Series Access Routers Software Configuration Guide

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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:

Command

Purpose

Step 1

isdn switch-type

switch-type

Example:

Router(config)#

isdn switch-type basic-net3

Router(config)#

Specifies the ISDN switch type.

The example specifies a switch type used in

Australia, Europe, and the United Kingdom. For

details on other switch types supported, see the

Cisco IOS Dial Technologies Command

Reference

.

Step 2

interface

type number

Example:

Router(config)#

interface bri 0

Router(config-if)#

Enters configuration mode for the ISDN Basic

Rate Interface (BRI).

Step 3

encapsulation

encapsulation-type

Example:

Router(config-if)#

encapsulation ppp

Router(config-if)#

Sets the BRI0 interface encapsulation type.

Step 4

dialer pool-member

number

Example:

Router(config-if)#

dialer pool-member 1

Router(config-if)#

Specifies the dialer pool membership.

Step 5

isdn switch-type

switch-type

Example:

Router(config-if)#

isdn switch-type

basic-net3

Router(config-if)#

Specifies the ISDN switch type.

Step 6

exit

Example:

Router(config-if)#

exit

Router(config)#

Enters global configuration mode.

Step 7

interface dialer

dialer-rotary-group-number

Example:

Router(config)#

interface dialer 0

Router(config-if)#

Creates a dialer interface (numbered 0–255) and

enters interface configuration mode.

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Chapter 13

Configuring Dial Backup and Remote Management

Configuring Dial Backup and Remote Management Through the ISDN S/T Port

Step 8

ip address negotiated

Example:

Router(config-if)#

ip address negotiated

Router(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 9

encapsulation

encapsulation-type

Example:

Router(config-if)#

encapsulation ppp

Router(config-if)#

Sets the encapsulation type to PPP for the

interface.

Step 10

dialer pool

number

Example:

Router(config-if)#

dialer pool 1

Router(config-if)#

Specifies the dialer pool to be used.

In the example, the dialer pool 1 setting associates

the dialer 0 interface with the BRI0 interface

because the BRI0 dialer pool-member value is 1.

Step 11

dialer string

dial-string

[

:

isdn-subaddress

]

Example:

Router(config-if)#

dialer string 384040

Router(config-if)#

Specifies the telephone number to be dialed.

Step 12

dialer-group

group-number

Example:

Router(config-if)#

dialer group 1

Router(config-if)#

Assigns the dialer interface to a dialer group

(1–10).

Step 13

exit

Example:

Router(config-if)#

exit

Router(config)#

Exits dialer 0 interface configuration mode, and

enters global configuration mode.

Step 14

dialer-list

dialer-group

protocol

protocol-name

{

permit

|

deny

|

list

access-list-number

|

access-group

}

Example:

Router(config)#

dialer-list 1 protocol ip

permit

Router(config)#

Creates a dialer list for packets of interest to be

forwarded through the specified interface dialer

group.

In the example, dialer-list 1 corresponds to

dialer-group 1.

For details about this command and additional

parameters that can be set, see the

Cisco IOS Dial

Technologies Command Reference

.

Command

Purpose

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Chapter 13

Configuring Dial Backup and Remote Management

Configuring Dial Backup and Remote Management Through the ISDN S/T Port

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 configuration example that is given in this chapter.

The ISDN peer router is any router that has an ISDN interface and can communicate through a public

ISDN network to reach your Cisco router ISDN interface. The ISDN peer router provides Internet access

for your Cisco router during the ATM network downtime.

! This portion of the example configures the aggregator.

vpdn enable

no vpdn logging

!

vpdn-group 1

accept-dialin

protocol pppoe

virtual-template 1

!

interface Ethernet3

description “4700ref-1”

ip address 40.1.1.1 255.255.255.0

media-type 10BaseT

!

interface Ethernet4

ip address 30.1.1.1 255.255.255.0

media-type 10BaseT

!

interface Virtual-Template1

ip address 22.0.0.2 255.255.255.0

ip mtu 1492

peer default ip address pool adsl

!

interface ATM0

no ip address

pvc 1/40

encapsulation aal5snap

protocol pppoe

!

no atm limi-keepalive

!

ip local pool adsl 22.0.0.1

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

! This portion of the example configures the ISDN peer.

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 pool-member 1

isdn switch-type basic-net3

!

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Chapter 13

Configuring Dial Backup and Remote Management

Configuring Dial Backup and Remote Management Through the ISDN S/T Port

interface Dialer0

ip address 192.168.2.2 255.255.255.0

encapsulation ppp

dialer pool 1

dialer string 384020

dialer-group 1

peer default ip address pool isdn

!

ip local pool isdn 192.168.2.1

ip http server

ip classless

ip 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

!

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Cisco 850 Series and Cisco 870 Series Access Routers Software Configuration Guide

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Chapter 13

Configuring Dial Backup and Remote Management

Configuring Dial Backup and Remote Management Through the ISDN S/T Port

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