RE: isdn question

From: Kenneth Wygand (KWygand@customonline.com)
Date: Wed Sep 24 2003 - 23:42:02 GMT-3


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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