ISDN and pstn backup

[nabylbt]

actually, the feedback from the tac is still open, they are suggesting a sys~wich (ios enhencement)...
true that the tech doesn't support is but it the hardware is there, i don't see i reason why youcan't use it as you want .... (but i do agree that what i'm trying to implement is dumb ... customer's always right ...)

[LegacyBoy]

If you assign the higher prority to the ISDN and unplug it (from what I read above it does switch over) then plug it back in does it sucsesfully come back or are you still getting the issue?

[nabylbt]

still get the same issue, with or without the priority and the dialer rotary best doesn't solve the problem either ....

[LegacyBoy]

but the dail up is supposed to come up when the isdn goes down?
and the ISDN is supposed to come up when it is availabe,

thats really wierd because the router should stop using the dail up when the isdn comes back up because of the priority,

dont mind me I am not the brightest in the world, but this is intresting and I want to help never set up ISDN with a dial up back up before,
I can ask some of my other CCNA buddies and see what they can think of.

[LegacyBoy]

the other guy here cant think of any thing
sorry
good luck

[nabylbt]

YEp it is possible !!! i tried the suggestions form the tac even if they said it wouldn't work and well it did it!!! well the rip with floating static is not working out but the rotary dialer is working out 'fine' ....
after a isdn failure, the async int take over the dialer profile and establishes a connection after the second try ( the first number dilaed is the isdn # of the other router wich fails automatically....) when the isdn is back on, the dialer switches back to isdn by itself since isdn has priority over any other connection( by default and hardcodded ....) the interval for the switcover is quiet long 1.5 mins but i don't want to fool with at commands to save 10 secs ...

Anyways thanks for your help/suggestions


here is the config do not hesitate in contacting me if you have any more questions:
Current configuration : 1930 bytes
!
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname office
!
aaa new-model
aaa authentication login default local
aaa authentication login NO_AUTHEN none
aaa authentication ppp default local
enable secret 5 $1$SSMd$RzXwmXaFE8.kYpijR0x1T0
!
username central password 0 cisco
username admin password 0 cisco
!
!
!
!
memory-size iomem 25
ip subnet-zero
no ip domain-lookup
ip host lap 192.168.1.151
ip host modem 2002 192.168.1.1
ip host central 192.168.1.0
!
isdn switch-type basic-net3
!
!
!
interface Loopback1
ip address 1.1.1.2 255.255.255.0
!
interface Serial0
no ip address
shutdown
no cdp enable
!
interface Serial1
physical-layer async
no ip address
encapsulation ppp
dialer in-band
dialer pool-member 1
async mode interactive
no peer default ip address
no fair-queue
no cdp enable
ppp authentication chap callin
!
interface BRI0
no ip address
encapsulation ppp
no ip route-cache
dialer pool-member 1
isdn switch-type basic-net3
no cdp enable
!
interface FastEthernet0
ip address 192.168.2.1 255.255.255.0
speed auto
no cdp enable
!
interface Dialer1
ip address 10.10.10.20 255.255.255.0
encapsulation ppp
dialer pool 1
dialer remote-name central
dialer rotor best
dialer idle-timeout 45
dialer fast-idle 1
dialer string AAAAAAAA
dialer string BBBBBBBB
dialer-group 1
pulse-time 0
no cdp enable
ppp authentication chap
ppp multilink
!
ip classless
ip route 192.168.1.0 255.255.255.0 10.10.10.21
ip route 192.168.1.151 255.255.255.255 FastEthernet0
no ip http server
!
dialer-list 1 protocol ip permit
no cdp run
!
line con 0
line 2
modem InOut
modem autoconfigure type usr_sportster
transport input all
autoselect ppp
speed 115200
flowcontrol hardware
line aux 0
line vty 0 4
password cisco
!
end

[iNViCTuS]

Hmmm...very interesting, but now at least we know it will work. That is not an issue you come across every day, but it sure is interesting to know.

Thanks for the hard work in figuring this out and keeping us updated..and also, thanks for the sample config, it is going straight to my library..

[gold eagle]

I'm snagging that to mine as well. Thks nabylbt.