RE: isdn question

From: Kenneth Wygand (KWygand@customonline.com)
Date: Wed Sep 24 2003 - 23:49:55 GMT-3


Actually I stand corrected. Bill Lijewski is correct - newer IOS versions now have a "ppp authentication chap callout" command (as opposed to just a "callin" parameter).
 
That's the command you'll want to use on R3 to satisfy your requirements.
 
Great job Bill!
Ken

        -----Original Message-----
        From: Kenneth Wygand
        Sent: Wed 9/24/2003 10:42 PM
        To: groupstudy@cconlinelabs.com; Kaiser Anwar; ccielab@groupstudy.com
        Cc:
        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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