Re: ISDN with 2 dialer profiles on either side

From: Graham Hopkins (ghopkins@wolf-rock.co.uk)
Date: Fri Jul 22 2005 - 07:36:33 GMT-3


Its all in the ppp negotiation and authentication

for all dialer interfaces add

ppp chap password CISCO

for the BRIs

add

ppp authentication chap - to router 5

and

ppp multilink to both. Without it the ppp negotion will fail

and take care not to debug too much when using dialer persistant

----- Original Message -----
From: "toonsh dosh" <toonsh@hotmail.com>
To: <ccielab@groupstudy.com>
Sent: Friday, July 22, 2005 9:22 AM
Subject: ISDN with 2 dialer profiles on either side

> Hi ,
>
> I am struggling with a dial issue and cannot see where I am going wrong
> and was wondering if someone could assist
>
> .4 dialer 1 (148.1.45.0/27) .5
> -----------------------------------
> r4 r5
> -------------------------------------
> .4 dialer 2 (10.45.45.0/24) .5
>
> Below are my configs:
>
> Router4
> !
> username ROUTER5 password 0 CISCO
> username RTR5 password 0 CISCO
> !
> !
> interface BRI0/0
> no ip address
> encapsulation ppp
> dialer pool-member 1
> isdn switch-type basic-net3
> ppp authentication chap
> !
> !
> interface Dialer1
> ip address 148.1.45.4 255.255.255.224
> encapsulation ppp
> load-interval 30
> dialer pool 1
> dialer remote-name ROUTER5
> dialer idle-timeout 0
> dialer string 6628
> dialer load-threshold 192 either
> dialer persistent delay initial 60
> dialer-group 1
> ppp authentication chap
> ppp chap hostname r1
> ppp multilink
> !
> !
> interface Dialer2
> ip address 10.45.45.4 255.255.255.0
> encapsulation ppp
> dialer pool 1
> dialer remote-name RTR5
> dialer string 6628
> dialer-group 2
> ppp authentication chap
> ppp chap hostname RTR1
> !
> !
> access-list 101 permit icmp host 10.45.45.4 host 10.45.45.5
> dialer-list 1 protocol ip permit
> dialer-list 2 protocol ip list 101
> !
>
> Router 5
>
> !
> username r1 password 0 CISCO
> username RTR1 password 0 CISCO
> !
> interface BRI1/0
> no ip address
> encapsulation ppp
> dialer pool-member 1
> isdn switch-type basic-net3
> !
> !
> interface Dialer1
> ip address 148.1.45.5 255.255.255.224
> encapsulation ppp
> load-interval 30
> dialer pool 1
> dialer remote-name r1
> dialer idle-timeout 0
> dialer string 8418
> ppp authentication chap
> ppp chap hostname ROUTER5
> ppp multilink
> !
> interface Dialer2
> ip address 10.45.45.5 255.255.255.0
> encapsulation ppp
> dialer pool 1
> dialer remote-name RTR1
> dialer string 8418
> dialer-group 2
> ppp authentication chap
> ppp chap hostname RTR5
> !
> !
> access-list 101 permit icmp host 10.45.45.5 host 10.45.45.4
> dialer-list 2 protocol ip list 101
> !
>
> The first dialer is a backup to Router 4 frame-relay connection. The
> second dialer is put in place to test connectivity from router 4 to router
> 5.
>
> From my understanding ( and I stand under correction ) when you add the
> second dialer interface the called router needs to know which dialer
> interface to associate this incoming call with. By enabling chap on the
> main interface of both routers, when I ping 10.45.45.5, I match dialer 2
> on router4. When router5 answers this call he should see this incoming
> challenge originating from host RTR1 and should associate this to dialer 2
> because of the "dialer remote-name RTR1" and then create a challenge
> using the hostname under dialer 2 which is RTR5.
>
> Clearly my logic is not correct. Could someone explain where I am going
> wrong.
>
> Thanks



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