From: louie kouncar (lkouncar@xxxxxx)
Date: Wed May 30 2001 - 17:00:27 GMT-3
Daniel,
When using dialer interface the PPP Authentication PAP/ CHAP goes on the BRI
(Physical) interface and not the Dialer (logical) interface...
Thanks
Louie J. Kouncar
TCO3 Senior Data Center Engineer
UUNET
W-703-343-6645
C-703-304-2460
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Daniel C. Young
Sent: Wednesday, May 30, 2001 3:23 PM
To: Groupstudy (E-mail)
Subject: ppp authentication w/ dialer profiles
Group,
Just need a clarification: when configuring isdn with dialer profiles, where
do the ppp parameters need to go to (physical interface or dialer
interface)? --specifically, the 'ppp authentication' command.
The reason we are asking is that we excluded 'ppp authentication' from the
physical interface but applied it to the dialer interface, and 'debug ppp
authentication' showed no output for authentication.
In case you want to include this information...This is with 'ppp auth' on
the dialer interface (no authentication debug message). See bellow:
15:16:29: BR0 DDR: rotor dialout [priority]
15:16:29: BR0 DDR: Dialing cause ip (s=172.16.120.1, d=172.16.120.2)
15:16:29: BR0 DDR: Attempting to dial 384020
15:16:29: ISDN BR0: TX -> SETUP pd = 8 callref = 0x16
15:16:29: Bearer Capability i = 0x8890
15:16:29: Channel ID i = 0x83
15:16:29: Called Party Number i = 0x80, '384020'
15:16:29: ISDN BR0: RX <- CALL_PROC pd = 8 callref = 0x96
15:16:29: Channel ID i = 0x89
15:16:29: Signal i = 0x05 - Confirm tone on
15:16:29: ISDN BR0: RX <- ALERTING pd = 8 callref = 0x96
15:16:29: Signal i = 0x01 - Ring back tone on
15:16:29: ISDN BR0: RX <- CONNECT pd = 8 callref = 0x96
15:16:29: Signal i = 0x3F - Tones off
15:16:29: %LINK-3-UPDOWN: Interface BRI0:1, changed state to up
15:16:30: %DIALER-6-BIND: Interface BR0:1 bound to profile Di0
15:16:30: BR0:1 PPP: Treating connection as a callout
15:16:30: ISDN BR0: TX -> CONNECT_ACK pd = 8 callref = 0x16
15:16:30: BR0:1 DDR: dialer protocol up
15:16:31: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed
state to up
15:16:36: %ISDN-6-CONNECT: Interface BRI0:1 is now connected to 384020
384020
r1#s deb
Dial on demand:
Dial on demand events debugging is on
PPP:
PPP authentication debugging is on
ISDN:
ISDN Q931 packets debugging is on
Yet, the call was placed, and the line still went up. Once we placed it on
the physical interface, the handshake occured properly as it should.
Puzzling...truly puzzling.
Now, on Cisco's web site for PPP Callback Over ISDN:
http://www.cisco.com/warp/public/793/access_dial/isdn-ppp-callback.html
You will notice that one router is configured with legacy ddr and the other
with dialer profiles. The router with the dialer profiles, maui-nas-04, has
the 'ppp authentication' command on its dialer interface -- not the physical
interface!
Later, we tested various combinations of 'ppp authenticaion' on bri0 and
dialer0 and found the following:
br0 on r1, d0 on r2 --> OK
br0 on r1, br0 on r2 --> OK
d0 on r1, d0 on r2 --> Call connect, but no authenticaion (see above)
br0 & d0 on r1, br0 on r2 --> OK
br0 & d0 on r1, br0 & d0 on r2 --> NO GO!
Our theory is that 'encapsulation ppp' needs to go on at least one physical,
but where are all othe ther ppp parameters supposed to go?
Can anyone verify and explain this?
Regards,
Daniel & Raymond
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