Configuring BRI Backup Interface with Dialer Profiles

我爱臭豆腐

Configuration

This configuration uses a BRI circuit to backup a serial link. It also uses the Open Shortest Path First (OSPF) routing protocol between the two routers. Once the backup connection is activated, you must ensure that the routing table is updated to use the new backup link. Only one side (maui-soho-01) is configured to dial out. The other side (maui-nas-05) is configured to accept the call.

In this configuration we have a Cisco 1604 router connected to a Cisco 3640 router using a serial connection. Both routers are also equipped with BRI interfaces that will be used for the backup link. The Cisco 1604 is running Cisco IOS

peng

  有没有实例啊！两边都使用isdn的话，双方如何配置？

我爱臭豆腐

刚才贴错了：）
maui-soho-01 (1600)

maui-soho-01#show running-config
Building configuration...

Current configuration : 1687 bytes
!
version 12.1
no service single-slot-reload-enable
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname maui-soho-01
!
logging rate-limit console 10 except errors
aaa new-model
aaa authentication login default local
aaa authentication login NO_AUTHEN none
aaa authentication ppp default local
!--- basic AAA configuration for ppp calls
enable secret 5 <deleted>;
!
username maui-nas-05 password 0 cisco
!--- username for remote router (maui-nas-05) and shared secret(used for
!--- CHAP authentication)
!--- shared secret must be the same on both sides
ip subnet-zero
no ip finger
!
isdn switch-type basic-ni
!
interface Loopback0
ip address 172.17.1.1 255.255.255.0
!--- The loopback address will be used by OSPF for the router ID.
!
interface Ethernet0
ip address 172.16.1.1 255.255.255.0
!
interface Serial0
!--- Primary Interface
backup delay 10 30
!--- Backup link will be activated 10 seconds after primary link goes down.
!--- Backup link will be deactivated 30 seconds after primary link is restored.
backup interface Dialer1
!--- Interface Dialer 1 will provide backup.
ip address 192.168.10.2 255.255.255.252
encapsulation ppp
no fair-queue
clockrate 64000
ppp authentication chap
!
interface BRI0
ip unnumbered Loopback0
!--- unnumbered to the Loopback 0 address
encapsulation ppp
dialer pool-member 10
!--- Assign BRI0 as member of dialer pool 10.
!--- Dialer pool 10 is specified in interface Dialer 1.
isdn switch-type basic-ni
isdn spid1 51255511110101 5551111
isdn spid2 51255511120101 5551112
ppp authentication chap
!--- Use ppp chap authentication.
ppp multilink
!
interface Dialer1
!--- Dialer 1 provides backup for the serial link.
ip address 172.20.10.2 255.255.255.0
!--- Address for the dialer interface.
!--- The remote side dialer interface is in the same subnet.
encapsulation ppp
dialer pool 10
!--- defines Dialer pool 10
!--- BRI 0 is a member of this pool.
dialer remote-name maui-nas-05
!--- specifies remote router name
!--- This name must match that used by the remote router to authenticate itself.
dialer idle-timeout 900
!--- Idle timeout is set to 900 seconds (15 minutes).
!--- The link will be disconnected if there is no interesting traffic for 900 secs.
!--- Since OSPF hellos are interesting traffic, this will reset the idle timeout
!--- and cause the link to stay up until the primary link is restored.
dialer string 5552222
!--- defines the destination routers phone number
dialer load-threshold 80 outbound
!--- This sets the outbound load level for traffic at which
!---additional connections will be added to the MP bundle load level.
!--- Values range from 1 (unloaded) to 255 (fully loaded). The threshold
!--- in this case is 80/255=32%.
dialer-group 1
!--- apply interesting traffic definition from dialer-list 1
ppp authentication chap
!--- use ppp chap authentication
ppp multilink
!
router ospf 5
log-adjacency-changes
network 172.16.1.0 0.0.0.255 area 0
network 172.17.1.0 0.0.0.255 area 0
network 172.20.10.0 0.0.0.255 area 0
network 192.168.10.0 0.0.0.3 area 0
!
ip classless
no ip http server
!
dialer-list 1 protocol ip permit
!--- All IP traffic is designated as interesting.
!--- This is applied to Interface Dialer 1 using dialer-group 1.
!--- OSPF hello packets will trigger the dial.
!
line con 0
exec-timeout 0 0
login authentication NO_AUTHEN
transport input none
line vty 0 4
!
end

maui-nas-05 (3640)

maui-nas-05#show running-config
Building configuration...

Current configuration:
!
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname maui-nas-05
!
aaa new-model
aaa authentication login default local
aaa authentication login NO_AUTHEN none
aaa authentication ppp default local
!--- basic AAA configuration for ppp calls
enable secret 5 <deleted>;
!
username maui-soho-01 password 0 cisco
!--- username for remote router (maui-soho-01) and shared secret
!---(used for CHAP authentication)
!--- shared secret must be the same on both sides
ip subnet-zero
!         
isdn switch-type basic-ni
!
interface Loopback0
ip address 172.22.1.1 255.255.255.0
!--- The loopback address will be used by OSPF for the router ID.
!
interface Ethernet0/0
ip address 172.22.53.105 255.255.255.0
!
interface Ethernet0/1
no ip address
shutdown
!
interface BRI1/0
ip unnumbered Loopback0
!--- unnumbered to the Loopback 0 address
encapsulation ppp
dialer pool-member 20
!--- Assign BRI0 as member of dialer pool 20.
!--- Dialer pool 20 is specified in interface Dialer 1.
isdn switch-type basic-ni
isdn spid1 51255522220101 5552222
isdn spid2 51255522230101 5552223
ppp authentication chap
!--- Use ppp chap authentication.
ppp multilink
!
! <<-- Unused interface configurations have been removed.
!
interface Serial2/0
!--- primary interface
ip address 192.168.10.1 255.255.255.252
encapsulation ppp
no fair-queue
ppp authentication chap
!
! <<--Unused interface configurations have been removed.
!
interface Dialer1
!--- Dialer 1 provides backup for the serial link.
ip address 172.20.10.1 255.255.255.0
!--- address for the dialer interface
!--- The remote side dialer interface is in the same subnet.
encapsulation ppp
dialer remote-name maui-soho-01
!--- specifies remote router name
!--- This name must match that used by the remote router to authenticate itself.
dialer pool 20
!--- defines dialer pool 20
dialer idle-timeout 900
!--- Idle timeout is set to 900 seconds (15 minutes).
!--- This is equal to the idle timeout set on maui-soho-01.
Dialer max-call 4096
dialer-group 1
!--- apply interesting traffic definition from dialer-list 1.
ppp authentication chap
!--- Use ppp chap authentication.
ppp multilink
!
router ospf 5
network 172.20.10.0 0.0.0.255 area 0
network 172.22.1.0 0.0.0.255 area 0
network 172.22.53.0 0.0.0.255 area 0
network 192.168.10.0 0.0.0.3 area 0
default-information originate
!--- transmit ospf default information
!--- This may be required for remote router to use the BRI DDR link.
!
ip classless
ip route 0.0.0.0 0.0.0.0 Ethernet0/0
no ip http server
!
dialer-list 1 protocol ip permit
!--- All IP traffic is designated as interesting.
!--- This is applied to Interface Dialer 1 using dialer-group 1.
!
line con 0
login authentication NO_AUTHEN
transport input none
line 97 102
line aux 0
line vty 0 4
!
end