09-11-2003 02:20 AM - edited 03-02-2019 10:15 AM
Hi,
First let me tell you that I new at configuring routers.
I have a Cisco 2611 which I would like to configure to use ADSL
and in case of connection failure switch to ISDN.
When the connection is restored, it should switch back to ADSL.
Please look at the config below, and tell me what is wrong.
START CONFIG:
Using 1385 out of 29688 bytes
!
version 12.1
no service single-slot-reload-enable
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname {XX HostName XX}
!
enable secret 5 {XX Secret XX}
!
username {XX Username XX} password 0 {XX Password XX}
!
!
!
!
ip subnet-zero
!
isdn switch-type basic-net3
!
!
!
interface Ethernet0/0
ip address 10.0.0.253 255.255.255.0
ip nat inside
!
interface BRI0/0
no ip address
encapsulation ppp
isdn switch-type basic-net3
isdn answer1 9999
isdn answer2 9999
no cdp enable
!
interface Ethernet0/1
backup delay 5 10
backup interface Dialer1
ip address {XX Outside IP ADSL XX} 255.255.255.248
ip nat outside
no ip route-cache
no ip mroute-cache
!
interface Dialer1
ip address {XX Outside IP ISDN XX} 255.255.255.0
ip nat outside
encapsulation ppp
no ip route-cache
no ip mroute-cache
dialer in-band
dialer idle-timeout 180
dialer string {XX ISP Number XX}
no cdp enable
ppp authentication pap callin
ppp pap sent-username {XX Username ISP XX} password 7 {XX Password ISP XX}
!
router rip
version 2
network 10.0.0.0
!
ip nat inside source list 1 interface Ethernet0/1 overload
ip classless
ip route 0.0.0.0 0.0.0.0 {XX IP ISP XX}
ip route 0.0.0.0 0.0.0.0 Dialer1 250
ip route 10.0.0.0 255.255.255.0 10.0.0.254
ip http server
!
access-list 1 permit any
!
line con 0
exec-timeout 0 0
login local
stopbits 1
line aux 0
line vty 0 4
password {XX Password XX}
login
!
end
END CONFIG
Thank you very much for any help you can provide me with.
Thierry
09-11-2003 07:07 AM
First of all, when the ADSL link fails, there is no way the router comes ot know that the ADSL link has failed. because you connect to the DSL modem via ethernet, and that link will remain up all the time.
On the dialer interface, you have not specified any dialer-list which associates interesting traffic for dialing the ISDN line
dialer-list 1 protocol ip permit
int dialer 1
dialer-group 1
Also if both service providers (the one for ADSL and ISDN) are diff and have given different address pools (public IP) you will need to use NAT with route maps to translate to the appropriate pool, in case of failure.
http://www.cisco.com/warp/public/105/nat_routemap.html
09-12-2003 02:23 AM
Thank you for your answer.
But I will need a little extra help, like I said, I'm new at this.
09-15-2003 11:48 PM
Anybody?
09-24-2003 11:48 PM
interface ATM0
no ip address
no ip route-cache
no atm ilmi-keepalive
pvc 8/48
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
dsl operating-mode auto
!
interface BRI0
ip address negotiated
ip nat outside
encapsulation ppp
dialer idle-timeout 600
dialer string xxxx
dialer load-threshold 1 either
dialer watch-group 1
dialer-group 1
isdn switch-type basic-net3
ppp authentication chap callin
ppp chap hostname xxxx
ppp chap password xxxx
ppp pap sent-username xxxx password xxxx
ppp multilink
!
interface FastEthernet0
ip address 10.3.2.235 255.255.0.0
ip access-group 120 in
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat inside
load-interval 30
shutdown
speed auto
no cdp enable
hold-queue 100 out
!
interface Dialer0
ip address negotiated
ip access-group 102 in
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat outside
encapsulation ppp
dialer pool 1
dialer-group 1
ppp pap sent-username xxxx password xxxxx
!
router mobile
!
ip classless
ip route profile
ip route 0.0.0.0 0.0.0.0 Dialer0
ip route 0.0.0.0 0.0.0.0 BRI0
no ip http server
no ip http secure-server
!
!
logging trap errors
dialer-list 1 protocol ip permit
no cdp run
!
!
line con 0
line aux 0
line vty 0 4
login
!
no scheduler allocate
!
end
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