08-19-2003 05:40 AM - edited 03-02-2019 09:42 AM
version 12.2
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname omisd01
!
logging queue-limit 100
enable password xxxxx
!
username all
ip subnet-zero
!
!
no ip domain lookup
!
!
isdn switch-type basic-net3
!
!
!
!
interface ATM0
no ip address
backup delay 10 120
backup interface BRI0
no atm ilmi-keepalive
pvc 0/35
encapsulation aal5snap
protocol ppp dialer
dialer pool-member 1
!
bundle-enable
dsl operating-mode auto
!
interface BRI0
ip address negotiated
encapsulation ppp
no ip split-horizon
dialer string 1525
dialer hold-queue 10
dialer-group 1
isdn switch-type basic-net3
isdn spid1 0
isdn spid2 0
ppp authentication pap callin
ppp pap sent-username isids01 password 7xxxxxx
ppp multilink
multilink load-threshold 1 either
!
interface FastEthernet0
ip address xxx.xxx.xxx.26 255.255.255.248
speed auto
!
interface Dialer0
ip address xxx.xxx.xxx.97 255.255.255.252
encapsulation ppp
dialer pool 1
ppp pap sent-username omisd01@tmnet password xxxxxx!
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer0
ip route 0.0.0.0 0.0.0.0 BRI0 10
no ip http server
!
!
dialer-list 1 protocol ip permit
!
!
line con 0
password xxxx
line aux 0
line vty 0 4
password xxxxx
login
!
no scheduler allocate
!
end
Attache pls find the real configuration. Both ADSL and ISDN is tested working. My problems is when i use ISDN to backup ADSL i faced some issues, it can't work !!!!
Observation.
when the inter ATM 0 is down, the int dia 0 is always remain up and sproofing, that caused the floating stating route can not kickin and the isdn can not dial. any idea how to configure ISDN backup in this kind of situation.
08-22-2003 04:15 AM
Looking at the config, you have IP negotiated for the links. Won't you need static addresses so that routing tables know when something has failed to bring up sec link?
Just a thought
Steve
08-25-2003 04:06 AM
Hi,
Thanks for your reply, what am i observed the problem is that the ADSL interfaces i'm trying to back up don't typically go down when L3 connectiviity is lost, and the backup strategies Cisco have typically rely on that happening.
Conslusion
When configured PPPoA using PaP and CHAP for ADSL, the dial-bakup will not work.
08-22-2003 12:45 PM
I've seen many people come across this problem. Depending on your ISP's PPP implementation the router may install a host route to your ISP upon initial connection of your adsl circuit. If it does install a host route than you can use dialer watch for your back up. Don't use the backup commands in this scenario they won't work. If you do install a host route to your ISP set up dialer watch to watch that specific host route and add an additional static host route for that host and point it out your BRI 0 interface to trick the router into thinkin it will get to that host via the BRI 0 which will bring up the backup.
Heres a link on dialer watch.
http://www.cisco.com/en/US/tech/tk801/tk133/technologies_configuration_example09186a008009455e.shtml
Feel free to e mail me directly if you have any questions.
Daniel
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