[c-nsp] Multilink PPP problem between 12.2 - 12.3

[Brian Lehigh]

I have setup multilink bundles in the past with very little effort but this
is driving me crazy.  Basically, I build the multilink interface and assign
it an address, set encapsulation to PPP on each of the serial interfaces and
add them to the multilink group and they just come up.
I am trying to do this same process on a 7206 NPE-150 running 12.2(17a) but
the serial interfaces stay in up/down.  I did a debug ppp negotiation and
debug ppp authentication and received the following:

----------------------------
Aug 23 14:43:11: Se2/0 PPP: Phase is DOWN [0 sess, 1 load]
Aug 23 14:43:11: Se2/0 PPP: Phase is ESTABLISHING, Passive Open [0 sess, 1
load]
Aug 23 14:43:11: Se2/0 LCP: State is Listen
Aug 23 14:43:13: Se2/0 LCP: TIMEout: State Listen
Aug 23 14:43:13: Se2/0 LCP: O CONFREQ [Listen] id 33 len 36
Aug 23 14:43:13: Se2/0 LCP:    MagicNumber 0x9A917F10 (0x05069A917F10)
Aug 23 14:43:13: Se2/0 LCP:    MRRU 1524 (0x110405F4)
Aug 23 14:43:13: Se2/0 LCP:    EndpointDisc 1 rt-core-00.mariposa
Aug 23 14:43:13: Se2/0 LCP:     (0x13160172742D636F72652D30302E6D61)
Aug 23 14:43:13: Se2/0 LCP:     (0x7269706F7361)
Aug 23 14:43:13: Se2/0 LCP: I CONFREQ [REQsent] id 30 len 20
Aug 23 14:43:13: Se2/0 LCP:    MagicNumber 0xB65F7D44 (0x0506B65F7D44)
Aug 23 14:43:13: Se2/0 LCP:    MRRU 1524 (0x110405F4)
Aug 23 14:43:13: Se2/0 LCP:    EndpointDisc 1 JCF (0x1306014A4346)
Aug 23 14:43:13: Se2/0 LCP: O CONFACK [REQsent] id 30 len 20
Aug 23 14:43:13: Se2/0 LCP:    MagicNumber 0xB65F7D44 (0x0506B65F7D44)
Aug 23 14:43:13: Se2/0 LCP:    MRRU 1524 (0x110405F4)
Aug 23 14:43:13: Se2/0 LCP:    EndpointDisc 1 JCF (0x1306014A4346)
Aug 23 14:43:13: Se2/0 LCP: I CONFACK [ACKsent] id 33 len 36
Aug 23 14:43:13: Se2/0 LCP:    MagicNumber 0x9A917F10 (0x05069A917F10)
Aug 23 14:43:13: Se2/0 LCP:    MRRU 1524 (0x110405F4)
Aug 23 14:43:13: Se2/0 LCP:    EndpointDisc 1 rt-core-00.mariposa
Aug 23 14:43:13: Se2/0 LCP:     (0x13160172742D636F72652D30302E6D61)
Aug 23 14:43:13: Se2/0 LCP:     (0x7269706F7361)
Aug 23 14:43:13: Se2/0 LCP: State is Open
Aug 23 14:43:13: Se2/0 AAA/AUTHOR/LCP: Denied
Aug 23 14:43:13: Se2/0 PPP: Phase is TERMINATING [0 sess, 1 load]
Aug 23 14:43:13: Se2/0 LCP: O TERMREQ [Open] id 34 len 4
Aug 23 14:43:13: Se2/0 LCP: I TERMACK [TERMsent] id 34 len 4
Aug 23 14:43:13: Se2/0 LCP: State is Closed
----------------------------

It looks like the link is trying to perform authentication but I didn't
configure it to use PAP or CHAP, etc.
Below is a snippet of the config.  What am I doing wrong here?  Does 12.2
require authentication?  I haven't had to use this on my routers running
12.3 code.

interface Multilink2
 description Multilink to customer
 ip address xxx.xxx.106.33 255.255.255.252
 no ip route-cache
 no ip mroute-cache
 no cdp enable
 ppp multilink
 multilink-group 2
!          
interface Serial2/0
 no ip address
 encapsulation ppp
 load-interval 30
 down-when-looped
 no fair-queue
 no cdp enable
 ppp multilink
 ppp multilink group 2
!
interface Serial2/1
 no ip address
 encapsulation ppp
 load-interval 30
 down-when-looped
 no fair-queue
 no cdp enable
 ppp multilink
 ppp multilink group 2
!



Brian Lehigh
Network Operations Center
Sierra Tel Internet
http://www.sti.net
 

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Oliver Boehmer
(oboehmer)
Sent: Wednesday, August 24, 2005 8:47 AM
To: Rivo Tahina RAZAFINDRATSIFA; cisco-nsp at puck.nether.net
Subject: RE: [c-nsp] bri problem

Rivo Tahina RAZAFINDRATSIFA <> wrote on Wednesday, August 24, 2005 3:29
PM:

> Hi all,
> 
> I have a Cisco 801 trying to connect to a central site, a debug isdn
> q931, shows the following:
> 
> Aug 24 16:26:10.870: ISDN BR0: TX ->  SETUP pd = 8  callref = 0x2B
> Aug 24 16:26:10.886:         Bearer Capability i = 0x8890
> Aug 24 16:26:10.890:         Channel ID i = 0x83
> Aug 24 16:26:10.894:         Shift to Codeset 6
> Aug 24 16:26:10.898:         Codeset 6 IE 0x24  i = 0x80
> Aug 24 16:26:10.898:         Called Party Number i = 0x80, '12345678',
> Plan:Unknown, Type:Unknown
> Aug 24 16:26:10.914:         High Layer Compat i = 0xC1FF
> Aug 24 16:26:10.918:         Sending Complete
> Aug 24 16:26:11.358: ISDN BR0: RX <-  CALL_PROC pd = 8  callref = 0xAB
> Aug 24 16:26:11.362:         Channel ID i = 0x89
> Aug 24 16:26:11.754: ISDN BR0: RX <-  DISCONNECT pd = 8  callref =
> 0xAB 
> Aug 24 16:26:11.758:         Cause i = 0x87BB - Unknown cause value
> Aug 24 16:26:11.878: ISDN BR0: TX ->  RELEASE pd = 8  callref = 0x2B
> Aug 24 16:26:12.046: ISDN BR0: RX <-  RELEASE_COMP pd = 8  callref =
> 0xAB Aug 24 16:26:13.702: ISDN BR0: TX ->  SETUP pd = 8  callref =
> 0x2C 
> Aug 24 16:26:13.706:         Bearer Capability i = 0x8890
> 
> Why do I have Unknown cause value?

Well, if the router knew more about the cause code, it would have
printed it ;-) I guess you need to check on the other side why it
disconnects the call.

	oli

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