From: Lou Ioanni (louisccie_r_s@yahoo.com)
Date: Sun Feb 18 2007 - 20:25:48 ART
Jenny, don't let this confuse you. There is nothing wrong with your password "ipexpert". That is the most common password in practice labs. No reason to use long password in a practice lab.
Brian Dennis <bdennis@internetworkexpert.com> wrote: You don't need the local router's username locally configured. You need the
username of the remote device locally configured. CHAP basically uses the
concept of a shared secret. Meaning that you are configuring a shared
secret (aka password) to use with a particular remote device. On R2 you say
"username R4 password cisco". This is telling the router that if we are
doing CHAP with a remote device named R4 we will use the shared secret of
"cisco".
Also your password is wrong. It should be "internetworkexpert" and not
"ipexpert" ;-)
--Brian Dennis, CCIE4 #2210 (R&S/ISP-Dial/Security/SP) bdennis@internetworkexpert.com
Internetwork Expert, Inc. http://www.InternetworkExpert.com Toll Free: 877-224-8987 Direct: 775-745-6404 (Outside the US and Canada)
On 2/18/07 2:47 PM, "jennytan" wrote:
> R2 and R4 are connected via Frame Relay. It worked when I didn't have > authentication turned on. I saw authentication error as soon as I turned on > ppp auth. Please see the detail below. Any idea what's wrong? > > On R4:- > username R4 password 0 ipexpert > interface Serial0/0/0 > no ip address > encapsulation frame-relay > no fair-queue > frame-relay interface-dlci 402 ppp Virtual-Template1 > no frame-relay inverse-arp > > interface Virtual-Template1 > ip address 150.50.24.4 255.255.255.0 > ppp authentication chap > > R4# > *Feb 18 22:50: 35.906: Vi1 PPP: Authorization required > *Feb 18 22:50:37.922: Vi1 CHAP: O CHALLENGE id 47 len 23 from "R4" > *Feb 18 22:50:37.922: Vi1 CHAP: I CHALLENGE id 129 len 23 from "R2" > *Feb 18 22:50:37.922 : Vi1 CHAP: Unable to authenticate for peer > *Feb 18 22:50:39.938: Vi1 PPP: Authorization required > *Feb 18 22:50:41.954: Vi1 CHAP: O CHALLENGE id 48 len 23 from "R4" > *Feb 18 22:50:41.954: Vi1 CHAP: I CHALLENGE id 130 len 23 from "R2" > *Feb 18 22:50:41.954: Vi1 CHAP: Unable to authenticate for peer > *Feb 18 22:50:43.970: Vi1 PPP: Authorization required > > > On R2:- > username R2 password 0 ipexpert > > interface Serial0/0/0.24 point-to-point > frame-relay interface-dlci 204 ppp Virtual-Template1 > > interface Serial0/0/0.24 point-to-point > frame-relay interface-dlci 204 ppp Virtual-Template1 > > R2# > *Feb 18 22:59:49.200: Vi1 CHAP: O CHALLENGE id 247 len 23 from "R2" > *Feb 18 22:59:49.200: Vi1 CHAP: I CHALLENGE id 165 len 23 from "R4" > *Feb 18 22:59:49.200: Vi1 CHAP: Unable to authenticate for peer > *Feb 18 22:59:51.216: Vi1 PPP: Authorization required > *Feb 18 22:59:53.232: Vi1 CHAP: O CHALLENGE id 248 len 23 from "R2" > *Feb 18 22:59:53.232: Vi1 CHAP: I CHALLENGE id 166 len 23 from "R4" > *Feb 18 22:59:53.232: Vi1 CHAP: Unable to authenticate for peer > *Feb 18 22:59:55.248: Vi1 PPP: Authorization required > > _______________________________________________________________________ > Subscription information may be found at: > http://www.groupstudy.com/list/CCIELab.html
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