Initially I have a leased line, backup by 64k ISDN using dialer watch and OSPF. So when the leased line fails, the 64k ISDN will kick in due to lost route and the ISDN will disconnect when the leased line is restored.
Recently I want to backup my leased line using 128k ISDN by adding additional command like ppp multilink and dialer load-threshold 1 either. When my leased line fails, the 128k ISDN will kick in but when the leased line is restored, this 2 channels ISDN never get disconnected! It still connected after 3 hours.....The ISDN by default comes with 128k, so it has only one phone number.
Anyone cares to enlighten me?
Thanks a lot.
Branch Config: Cisco 1721
abc#sh ru
Building configuration...
Current configuration : 1975 bytes
!
! Last configuration change at 12:23:46 UTC Wed Apr 30 2003
! NVRAM config last updated at 12:23:50 UTC Wed Apr 30 2003
!
version 12.2
service timestamps debug datetime
service timestamps log datetime
service password-encryption
!
hostname abc
!
logging buffered 4096 debugging
enable secret 456
!
username xxxxxx password xxxx
ip subnet-zero
no ip domain lookup
ip host tp 10.100.100.2
!
!
isdn switch-type basic-net3
!
!
!
interface Loopback0
ip address 172.30.90.1 255.255.255.0
!
interface Tunnel0
bandwidth 2000
ip address 10.205.1.34 255.255.255.252
ip tcp adjust-mss 1436
keepalive 10
tunnel source Ethernet0
tunnel destination 10.100.100.2
!
interface BRI0
no ip address
encapsulation ppp
dialer pool-member 1
isdn switch-type basic-net3
ppp authentication chap
!
interface Ethernet0
ip address 192.168.1.2 255.255.255.252
half-duplex
!
interface FastEthernet0
ip address 10.200.90.1 255.255.255.0
speed auto
!
interface Dialer0
bandwidth 128
ip address 10.205.2.34 255.255.255.252
encapsulation ppp
ip ospf hello-interval 30
dialer pool 1
dialer remote-name GVCore2
dialer idle-timeout 10
dialer string 67854127
dialer load-threshold 1 either
dialer watch-group 1
dialer-group 1
ppp authentication chap
ppp multilink
!
router ospf 1
log-adjacency-changes
network 10.0.0.0 0.255.255.255 area 0
!
ip classless
ip route 10.100.100.0 255.255.255.252 192.168.1.1
no ip http server
!
!
dialer watch-list 1 ip 10.199.99.0 255.255.255.0
dialer watch-list 1 delay route-check initial 15
dialer watch-list 1 delay disconnect 20
dialer-list 1 protocol ip deny
snmp-server community public RO
snmp-server enable traps tty
!
line con 0
logging synchronous
stopbits 1
line aux 0
line vty 0 4
password xxxx
login
!
scheduler max-task-time 5000
no scheduler allocate
end
HQ config: Cisco 2621XM
GVCore2#sh ru
Building configuration...
Current configuration : 5344 bytes
!
! Last configuration change at 12:16:18 UTC Wed Apr 30 2003
! NVRAM config last updated at 12:16:19 UTC Wed Apr 30 2003
!
version 12.2
service timestamps debug datetime
service timestamps log datetime
service password-encryption
!
hostname GVCore2
!
logging buffered 4096 debugging
enable secret xxxx
!
username xxxx password xxx
ip subnet-zero
!
!
no ip domain lookup
!
isdn switch-type basic-net3
!
!
!
!
interface Loopback0
ip address 172.30.95.1 255.255.255.0
!
interface FastEthernet0/0
ip address 10.199.99.12 255.255.255.0
no ip redirects
duplex auto
speed auto
no standby redirect
standby 1 ip 10.199.99.10
!
interface BRI0/0
no ip address
encapsulation ppp
dialer pool-member 1
isdn switch-type basic-net3
ppp authentication chap
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface BRI0/1
no ip address
encapsulation ppp
dialer pool-member 1
isdn switch-type basic-net3
ppp authentication chap
!
interface BRI1/0
no ip address
encapsulation ppp
dialer pool-member 1
isdn switch-type basic-net3
ppp authentication chap
!
interface BRI1/1
no ip address
encapsulation ppp
dialer pool-member 1
isdn switch-type basic-net3
ppp authentication chap
!
interface BRI1/2
no ip address
encapsulation ppp
dialer pool-member 1
isdn switch-type basic-net3
ppp authentication chap
!
interface BRI1/3
no ip address
shutdown
isdn switch-type basic-net3
!
interface Dialer8
bandwidth 128
ip address 10.205.2.33 255.255.255.252
encapsulation ppp
ip ospf hello-interval 30
dialer pool 1
dialer remote-name abc
dialer idle-timeout 60
dialer-group 1
ppp authentication chap
ppp multilink
!
router ospf 1
log-adjacency-changes
network 10.199.99.0 0.0.0.255 area 0
network 10.205.2.0 0.0.0.255 area 0
default-information originate
!
ip classless
ip route 0.0.0.0 0.0.0.0 10.199.99.21
ip route 10.200.20.0 255.255.255.0 10.199.99.11
ip route 172.16.0.0 255.255.0.0 10.199.99.30
ip route 192.168.1.0 255.255.255.252 10.199.99.11
ip route 202.160.0.0 255.255.0.0 10.199.99.11
ip http server
!
!
dialer-list 1 protocol ip permit
snmp-server community public RO
snmp-server enable traps tty
!
line con 0
logging synchronous
line aux 0
line vty 0 4
password 456
login
!
!
end
