From: Petr Lapukhov (petrsoft@gmail.com)
Date: Sun May 21 2006 - 13:01:41 ART
Larry,
Try "ppp direction dedicated" on "calling" Dialer interface, that is
at "client" side (R4 in your case).
Don't forget to shutdown/no shutdown physical interface.
More details at:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124tcr/tdia_r
/dia_p1ht.htm#wp1017778
HTH
Petr
2006/5/21, Larry Chuon <lchuon@gmail.com>:
>
> I can't figure out this chap authentication problem. It works with pap
> though.
>
> R4:
> username r2 password 0 CISCO
> !
> interface Serial0/1/0
> no ip address
> encapsulation ppp
> dialer in-band
> dialer pool-member 1
> pulse-time 1
> ppp chap hostname Rack1R4
> ppp chap password 0 CISCO
> !
> interface Dialer1
> ip address 20.20.24.4 255.255.255.0
> encapsulation ppp
> dialer pool 1
>
> R2:
> username r4 password 0 CISCO
> username Rack1R4 password 0 CISCO
> !
> interface Serial0/1/0
> no ip address
> encapsulation ppp
> dialer in-band
> dialer pool-member 1
> clock rate 2000000
> pulse-time 1
> ppp authentication chap
> !
> interface Dialer1
> ip address 20.20.24.2 255.255.255.0
> encapsulation ppp
> dialer pool 1
>
>
> debug:
> r2(config-if)#
> *May 21 15:30:26.059: Se0/1/0 AUTH: Timeout 4
> *May 21 15:30:26.059: Se0/1/0 CHAP: O CHALLENGE id 16 len 23 from "r2"
> r2(config-if)#
> *May 21 15:30:36.075: Se0/1/0 AUTH: Timeout 5
> *May 21 15:30:36.075: Se0/1/0 CHAP: O CHALLENGE id 17 len 23 from "r2"
>
> r4(config-if)#
> *May 21 15:26:23.771: Se0/1/0 CHAP: I CHALLENGE id 20 len 23 from "r2"
> *May 21 15:26:23.771: Se0/1/0 CHAP: Ignoring spoofed Challenge
> *May 21 15:26:23.795: Se0/1/0 AUTH: Timeout 8
> r4(config-if)#
> *May 21 15:26:33.787: Se0/1/0 CHAP: I CHALLENGE id 21 len 23 from "r2"
> *May 21 15:26:33.787: Se0/1/0 CHAP: Ignoring spoofed Challenge
> *May 21 15:26:33.811: Se0/1/0 AUTH: Timeout 9
>
> TIA,
> Larry
>
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