[cisco-nas] L2TP & multink problem
Tassos Chatzithomaoglou
achatz at forthnet.gr
Mon May 3 13:13:44 EDT 2004
We have the following 2 cases.
1. multilink is NOT enabled under dialer interface on LAC
2. multilink is enabled under dialer interface on LAC
LNS has multilink enabled under vt on both cases and "lcp renegotiation always" configured
under the appropriate vpdn group.
The client uses WinXP & ISDN TA (with its own ppp stack) and has enabled multilink on both..
LAC = AS5300 (12.2(15)T11) & AS5350 (12.3(6))
LNS = 7140 (12.3(6a))
1st case
--------
LAC
---
ay 3 19:27:06.420: Se2:9 PPP: Using dialer call direction
May 3 19:27:06.420: Se2:9 PPP: Treating connection as a callin
May 3 19:27:06.420: Se2:9 PPP: Phase is ESTABLISHING, Passive Open
May 3 19:27:06.420: Se2:9 LCP: State is Listen
May 3 19:27:06.808: Se2:9 LCP: I CONFREQ [Listen] id 1 len 28
May 3 19:27:06.808: Se2:9 LCP: MagicNumber 0x261212E8 (0x0506261212E8)
May 3 19:27:06.808: Se2:9 LCP: Callback 6 (0x0D0306)
May 3 19:27:06.808: Se2:9 LCP: MRRU 1506 (0x110405E2)
May 3 19:27:06.808: Se2:9 LCP: EndpointDisc 4 Magic (0x130B040406C31157F09327)
May 3 19:27:06.808: Se2:9 LCP: O CONFREQ [Listen] id 14 len 14
May 3 19:27:06.808: Se2:9 LCP: AuthProto PAP (0x0304C023)
May 3 19:27:06.808: Se2:9 LCP: MagicNumber 0xD6A470C1 (0x0506D6A470C1)
May 3 19:27:06.812: Se2:9 LCP: O CONFREJ [Listen] id 1 len 11
May 3 19:27:06.812: Se2:9 LCP: Callback 6 (0x0D0306)
May 3 19:27:06.812: Se2:9 LCP: MRRU 1506 (0x110405E2)
May 3 19:27:06.844: Se2:9 LCP: I CONFACK [REQsent] id 14 len 14
May 3 19:27:06.844: Se2:9 LCP: AuthProto PAP (0x0304C023)
May 3 19:27:06.844: Se2:9 LCP: MagicNumber 0xD6A470C1 (0x0506D6A470C1)
May 3 19:27:08.768: Se2:9 LCP: I CONFREQ [ACKrcvd] id 2 len 13
May 3 19:27:08.768: Se2:9 LCP: MagicNumber 0x261212E8 (0x0506261212E8)
May 3 19:27:08.768: Se2:9 LCP: Callback 6 (0x0D0306)
May 3 19:27:08.768: Se2:9 LCP: O CONFREJ [ACKrcvd] id 2 len 7
May 3 19:27:08.768: Se2:9 LCP: Callback 6 (0x0D0306)
May 3 19:27:08.804: Se2:9 LCP: I CONFREQ [ACKrcvd] id 3 len 10
May 3 19:27:08.804: Se2:9 LCP: MagicNumber 0x261212E8 (0x0506261212E8)
May 3 19:27:08.804: Se2:9 LCP: O CONFACK [ACKrcvd] id 3 len 10
May 3 19:27:08.804: Se2:9 LCP: MagicNumber 0x261212E8 (0x0506261212E8)
May 3 19:27:08.804: Se2:9 LCP: State is Open
May 3 19:27:08.804: Se2:9 PPP: Phase is AUTHENTICATING, by this end
LNS
---
May 3 19:27:08.910: ppp1570 PPP: Phase is ESTABLISHING
May 3 19:27:08.910: ppp1570 LCP: O CONFREQ [Closed] id 1 len 24
May 3 19:27:08.910: ppp1570 LCP: AuthProto PAP (0x0304C023)
May 3 19:27:08.910: ppp1570 LCP: MagicNumber 0x17819888 (0x050617819888)
May 3 19:27:08.910: ppp1570 LCP: MRRU 1524 (0x110405F4)
May 3 19:27:08.910: ppp1570 LCP: EndpointDisc 1 mmp (0x1306016D6D70)
May 3 19:27:08.926: ppp1570 LCP: I CONFREJ [REQsent] id 1 len 8
May 3 19:27:08.926: ppp1570 LCP: MRRU 1524 (0x110405F4)
May 3 19:27:08.926: ppp1570 LCP: O CONFREQ [REQsent] id 2 len 20
May 3 19:27:08.926: ppp1570 LCP: AuthProto PAP (0x0304C023)
May 3 19:27:08.926: ppp1570 LCP: MagicNumber 0x17819888 (0x050617819888)
May 3 19:27:08.926: ppp1570 LCP: EndpointDisc 1 mmp (0x1306016D6D70)
May 3 19:27:08.974: ppp1570 LCP: I CONFREQ [REQsent] id 6 len 10
May 3 19:27:08.974: ppp1570 LCP: MagicNumber 0x261212E8 (0x0506261212E8)
May 3 19:27:08.974: ppp1570 LCP: O CONFACK [REQsent] id 6 len 10
May 3 19:27:08.974: ppp1570 LCP: MagicNumber 0x261212E8 (0x0506261212E8)
May 3 19:27:08.978: ppp1570 LCP: I CONFACK [ACKsent] id 2 len 20
May 3 19:27:08.978: ppp1570 LCP: AuthProto PAP (0x0304C023)
May 3 19:27:08.978: ppp1570 LCP: MagicNumber 0x17819888 (0x050617819888)
May 3 19:27:08.978: ppp1570 LCP: EndpointDisc 1 mmp (0x1306016D6D70)
May 3 19:27:08.978: ppp1570 LCP: State is Open
May 3 19:27:08.978: ppp1570 PPP: Phase is AUTHENTICATING, by this end
2nd case
--------
LAC
---
May 3 19:25:07.957: Se2:8 PPP: Using dialer call direction
May 3 19:25:07.957: Se2:8 PPP: Treating connection as a callin
May 3 19:25:07.957: Se2:8 PPP: Phase is ESTABLISHING, Passive Open
May 3 19:25:07.957: Se2:8 LCP: State is Listen
May 3 19:25:09.957: Se2:8 LCP: TIMEout: State Listen
May 3 19:25:09.957: Se2:8 LCP: O CONFREQ [Listen] id 26 len 24
May 3 19:25:09.957: Se2:8 LCP: AuthProto PAP (0x0304C023)
May 3 19:25:09.957: Se2:8 LCP: MagicNumber 0xD6A2A84C (0x0506D6A2A84C)
May 3 19:25:09.957: Se2:8 LCP: MRRU 1524 (0x110405F4)
May 3 19:25:09.957: Se2:8 LCP: EndpointDisc 1 mmp (0x1306016D6D70)
May 3 19:25:09.993: Se2:8 LCP: I CONFACK [REQsent] id 26 len 24
May 3 19:25:09.993: Se2:8 LCP: AuthProto PAP (0x0304C023)
May 3 19:25:09.993: Se2:8 LCP: MagicNumber 0xD6A2A84C (0x0506D6A2A84C)
May 3 19:25:09.993: Se2:8 LCP: MRRU 1524 (0x110405F4)
May 3 19:25:09.993: Se2:8 LCP: EndpointDisc 1 mmp (0x1306016D6D70)
May 3 19:25:10.293: Se2:8 LCP: I CONFREQ [ACKrcvd] id 2 len 28
May 3 19:25:10.293: Se2:8 LCP: MagicNumber 0x3EA82025 (0x05063EA82025)
May 3 19:25:10.293: Se2:8 LCP: Callback 6 (0x0D0306)
May 3 19:25:10.293: Se2:8 LCP: MRRU 1506 (0x110405E2)
May 3 19:25:10.293: Se2:8 LCP: EndpointDisc 4 Magic (0x130B0477EE0B102D1884F3)
May 3 19:25:10.293: Se2:8 LCP: O CONFREJ [ACKrcvd] id 2 len 7
May 3 19:25:10.293: Se2:8 LCP: Callback 6 (0x0D0306)
May 3 19:25:10.329: Se2:8 LCP: I CONFREQ [ACKrcvd] id 3 len 25
May 3 19:25:10.329: Se2:8 LCP: MagicNumber 0x3EA82025 (0x05063EA82025)
May 3 19:25:10.329: Se2:8 LCP: MRRU 1506 (0x110405E2)
May 3 19:25:10.329: Se2:8 LCP: EndpointDisc 4 Magic (0x130B0424C084A65B44C123)
May 3 19:25:10.329: Se2:8 LCP: O CONFACK [ACKrcvd] id 3 len 25
May 3 19:25:10.329: Se2:8 LCP: MagicNumber 0x3EA82025 (0x05063EA82025)
May 3 19:25:10.329: Se2:8 LCP: MRRU 1506 (0x110405E2)
May 3 19:25:10.329: Se2:8 LCP: EndpointDisc 4 Magic (0x130B0424C084A65B44C123)
May 3 19:25:10.329: Se2:8 LCP: State is Open
May 3 19:25:10.329: Se2:8 PPP: Phase is AUTHENTICATING, by this end
LNS
---
May 3 19:25:10.454: ppp972 PPP: Phase is ESTABLISHING
May 3 19:25:10.454: ppp972 LCP: O CONFREQ [Closed] id 1 len 24
May 3 19:25:10.454: ppp972 LCP: AuthProto PAP (0x0304C023)
May 3 19:25:10.454: ppp972 LCP: MagicNumber 0x177FC929 (0x0506177FC929)
May 3 19:25:10.454: ppp972 LCP: MRRU 1524 (0x110405F4)
May 3 19:25:10.454: ppp972 LCP: EndpointDisc 1 mmp (0x1306016D6D70)
May 3 19:25:10.502: ppp972 LCP: I CONFREQ [REQsent] id 6 len 25
May 3 19:25:10.502: ppp972 LCP: MagicNumber 0x3EA82025 (0x05063EA82025)
May 3 19:25:10.502: ppp972 LCP: MRRU 1506 (0x110405E2)
May 3 19:25:10.502: ppp972 LCP: EndpointDisc 4 Magic (0x130B047EE40FA42EBF1911)
May 3 19:25:10.502: ppp972 LCP: O CONFACK [REQsent] id 6 len 25
May 3 19:25:10.506: ppp972 LCP: MagicNumber 0x3EA82025 (0x05063EA82025)
May 3 19:25:10.506: ppp972 LCP: MRRU 1506 (0x110405E2)
May 3 19:25:10.506: ppp972 LCP: EndpointDisc 4 Magic (0x130B047EE40FA42EBF1911)
May 3 19:25:10.506: ppp972 LCP: I CONFACK [ACKsent] id 1 len 24
May 3 19:25:10.506: ppp972 LCP: AuthProto PAP (0x0304C023)
May 3 19:25:10.506: ppp972 LCP: MagicNumber 0x177FC929 (0x0506177FC929)
May 3 19:25:10.506: ppp972 LCP: MRRU 1524 (0x110405F4)
May 3 19:25:10.506: ppp972 LCP: EndpointDisc 1 mmp (0x1306016D6D70)
May 3 19:25:10.506: ppp972 LCP: State is Open
May 3 19:25:10.506: ppp972 PPP: Phase is AUTHENTICATING, by this end
As you can see on the 1st case (LNS), we have the MRRU which gets CONFREJ from the client,
and i suppose this is the reason we can't establish the multilink bundle.
Any idea why?
--
***************************************
Chatzithomaoglou Anastasios
Network Design & Development Department
FORTHnet S.A.
<achatz at forthnet.gr>
***************************************
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