From: William Lijewski (ccie8642@hotmail.com)
Date: Thu Sep 25 2003 - 03:41:39 GMT-3
That looks good to me. From what you stated in the question the provided
answer you received is incorrect, it should be callout, not callin, just
like you have configured.
Try and think of it from the routers point of view. If you tell the router
'ppp authentication chap callin' it means that it is only going to
authenticate that type of call - calls into itself. If you tell the router
' ppp authentication chap callout' it means that its only going to
authenticate calls that it originates outbound.
Bill Lijewski
CCIE #8642
Network Learning Inc
5 Day R&S CCIE Bootcamp Instructor
>From: "Kaiser Anwar" <kaiseranwar@sbcglobal.net>
>Reply-To: "Kaiser Anwar" <kaiseranwar@sbcglobal.net>
>To: "Kenneth Wygand" <KWygand@customonline.com>,
><groupstudy@cconlinelabs.com>, <ccielab@groupstudy.com>
>Subject: Re: isdn question
>Date: Wed, 24 Sep 2003 22:30:03 -0500
>
>First of all I don't know why I takes so long for my email to show up.
>anyway
>I guess the solution I have is not right. I have ppp authentication chap
>callout.it seems to be working.
>so when r1 call r3 will not challenge any incoming call. this is the debug
>output.correct me if I am wrong
>
>12:02:23: %LINK-3-UPDOWN: Interface BRI0:1, changed state to up
>12:02:23: BR0:1 PPP: Using dialer call direction
>12:02:23: BR0:1 PPP: Treating connection as a callout
>12:02:23: BR0:1 CHAP: O CHALLENGE id 6 len 23 from "r1"
>12:02:23: BR0:1 CHAP: I RESPONSE id 6 len 23 from "r3"
>12:02:23: BR0:1 CHAP: O SUCCESS id 6 len 4
>12:02:23: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to
>up.!!!!
>Success rate is 80 percent (4/5), round-trip min/avg/max = 32/35/36 ms
>
>Thanks
>Kaiser Anwar
>----- Original Message -----
>From: "Kenneth Wygand" <KWygand@customonline.com>
>To: <groupstudy@cconlinelabs.com>; "Kaiser Anwar"
><kaiseranwar@sbcglobal.net>; <ccielab@groupstudy.com>
>Sent: Wednesday, September 24, 2003 9:42 PM
>Subject: RE: isdn question
>
>
> > Tony,
> >
> > I agree that everything else in the question points to using "ppp
>authentication chap callin". Kaiser probably just reversed the two router
>names.
> >
> > Ken
> >
> > -----Original Message-----
> > From: Tony Schaffran [mailto:groupstudy@cconlinelabs.com]
> > Sent: Wed 9/24/2003 10:35 PM
> > To: Kenneth Wygand; 'Kaiser Anwar'; ccielab@groupstudy.com
> > Cc:
> > Subject: RE: isdn question
> >
> >
> >
> > I think you are correct.
> >
> > I read his question too fast.
> >
> > He is either not stating all of the requirements or he has stated it
> > backwards. But I believe he is trying to get to callin.
> >
> > Thank you for pointing that out.
> >
> > Tony Schaffran
> > Network Analyst
> > CCIE #11071
> > CCNP, CCNA, CCDA,
> > NNCDS, NNCSS, CNE, MCSE
> >
> > www.cconlinelabs.com
> > Your #1 choice for online Cisco rack rentals.
> >
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> > Kenneth Wygand
> > Sent: Wednesday, September 24, 2003 7:23 PM
> > To: Tony Schaffran; Kaiser Anwar; ccielab@groupstudy.com
> > Subject: RE: isdn question
> >
> > Actually Tony, I disagree. "ppp authentication chap callin" should be
>used
> > on a router so that challenges are made only on INCOMING calls, not
>outgoing
> > calls.
> >
> > Now in Kaiser's question, he said "If R1 calls R3. R3 should not
>challenge
> > R1". Well if R1 is doing the calling, "ppp authentication chap callin"
> > configured on this router will cause R1 not to challenge R3, but R3 will
> > challenge R1. If we put "ppp authentication chap callin" on R3, the
>call
> > would be considered incoming from R3's perspective and R3 WILL in fact
> > challenge R1.
> >
> > Seems to me that R3 will always challenge R1 when R1 initiates the call
>to
> > R3 no matter where "ppp authentication chap callin" is placed.
> >
> > Someone please correct me if I am wrong.
> >
> > Thanks,
> > Ken
> >
> > -----Original Message-----
> > From: Tony Schaffran [mailto:groupstudy@cconlinelabs.com]
> > Sent: Wed 9/24/2003 10:08 PM
> > To: 'Kaiser Anwar'; ccielab@groupstudy.com
> > Cc:
> > Subject: RE: isdn question
> >
> >
> >
> > Sorry about my previous post.
> >
> > I forgot the authentication in the "ppp authentication chap
>callin"
> > command.
> >
> > It looks like you already had the answer in one of your other
>posts.
> >
> > Tony Schaffran
> > Network Analyst
> > CCIE #11071
> > CCNP, CCNA, CCDA,
> > NNCDS, NNCSS, CNE, MCSE
> >
> > www.cconlinelabs.com
> > Your #1 choice for online Cisco rack rentals.
> >
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
>Behalf
> > Of
> > Kaiser Anwar
> > Sent: Wednesday, September 24, 2003 4:46 PM
> > To: ccielab@groupstudy.com
> > Cc: ccielab@groupstudy.com
> > Subject: isdn question
> >
> > Hi,
> > I am little confused here. this is what I am trying to
>achiev.
>I
> > have R1
> > connected to R3 with isdn.
> > If R1 calls R3. R3 should not challenge R1. which command I
>need
> > to put
> > and
> > on which router.
> >
> > Thanks
> > Kaiser A
> >
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