[j-nsp] PPP Negotiation Issues

[Jason Iannone]

JUNOS 8.3R4.3
AOS 17.4.2

It looks like the truncated endpoint discriminator option block was
corrected before 8.0.

On Fri, Apr 24, 2009 at 12:59 PM, Nalkhande Tarique Abbas
<ntarique at juniper.net> wrote:
>
> Hey Jason,
>
> I don't see any LCP Conf-Ack for the LCP request sent by Adtran, & as
> you pointed the endpoint discriminator option block received from the
> peer are truncated with a LCP config-reject message.
>
> So what Junos version router is loaded with?
> Check if you are hitting PR/97169 (available on website)
>
>
> Thanks & Regards,
> Tarique A. Nalkhande
>
> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net
> [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Jason Iannone
> Sent: Friday, April 24, 2009 11:51 PM
> To: juniper-nsp at puck.nether.net
> Subject: [j-nsp] PPP Negotiation Issues
>
> All,
>
> I'm having trouble understanding a PPP Negotation issue with a single
> T1 on a Multilink interface.  The Juniper appears to be rejecting an
> LCP configuration option including a MAC address received from an
> Adtran.  I haven't been able to find a reference in RFC 1661
> indicating that "End-Disc" is a valid option.  This is the second time
> we've seen this issue and I'm not sure if I'm digressing from the real
> issue or if I should continue to pursue this.
>
> The following debugs were from the same ~20 second period.  The Adtran
> never indicates that it has received an LCP message, while the Juniper
> both transmits and receives.  In the interest of brevity, I have
> removed all but two cycles of configure reject messages from the
> Juniper monitor traffic interface detail output.
>
>
> Adtran PPP debug:
>
> 2009.04.24 17:40:08 PPP.NEGOTIATION PPPtx[t1 1/1] LCP: Conf-Req
> ID=152 Len=23 MAGIC(027e2bf2) MRRU(1520) ED(3:00a0c84068c2)
> 2009.04.24 17:40:12 PPP.NEGOTIATION PPPtx[t1 1/1] LCP: Conf-Req
> ID=153 Len=23 MAGIC(027e2bf2) MRRU(1520) ED(3:00a0c84068c2)
> 2009.04.24 17:40:16 PPP.NEGOTIATION PPPtx[t1 1/1] LCP: Conf-Req
> ID=154 Len=23 MAGIC(027e2bf2) MRRU(1520) ED(3:00a0c84068c2)
> 2009.04.24 17:40:20 PPP.NEGOTIATION PPPtx[t1 1/1] LCP: Conf-Req
> ID=155 Len=23 MAGIC(027e2bf2) MRRU(1520) ED(3:00a0c84068c2)
> 2009.04.24 17:40:24 PPP.NEGOTIATION PPPtx[t1 1/1] LCP: Conf-Req
> ID=156 Len=23 MAGIC(027e2bf2) MRRU(1520) ED(3:00a0c84068c2)
> 2009.04.24 17:40:28 PPP.NEGOTIATION PPPtx[t1 1/1] LCP: Conf-Req
> ID=157 Len=23 MAGIC(027e2bf2) MRRU(1520) ED(3:00a0c84068c2)
> 2009.04.24 17:40:32 PPP.NEGOTIATION PPPtx[t1 1/1] LCP: Conf-Req
> ID=158 Len=23 MAGIC(7bb2b1cf) MRRU(1520) ED(3:00a0c84068c2)
> 2009.04.24 17:40:32 PPP.NEGOTIATION PPPtx[t1 1/1] LCP: Conf-Req
> ID=159 Len=23 MAGIC(7bb2b1cf) MRRU(1520) ED(3:00a0c84068c2)
>
> ---
>
> Juniper debug:
>
> 17:40:08.685156  In LCP, Conf-Request (0x01), id 152, length 25
>        encoded length 23 (=Option(s) length 19)
>          Magic-Num Option (0x05), length 6: 0x027e2bf2
>          MRRU Option (0x11), length 4: 1520
>          End-Disc Option (0x13), length 9: MAC 00:a0:c8:40:68:c2
> 17:40:08.685294 Out LCP, Conf-Reject (0x04), id 152, length 15
>        encoded length 13 (=Option(s) length 9)
>          End-Disc Option (0x13), length 9: MAC 00:a0:c8:40:68:c2
> 17:40:11.382693 Out LCP, Conf-Request (0x01), id 53, length 27
>        encoded length 25 (=Option(s) length 21)
>          MRU Option (0x01), length 4: 1514
>          Magic-Num Option (0x05), length 6: 0x49fc248a
>          MRRU Option (0x11), length 4: 1504
>          End-Disc Option (0x13), length 7: IPv4 64.129.252.137
> 17:40:12.684943  In LCP, Conf-Request (0x01), id 153, length 25
>        encoded length 23 (=Option(s) length 19)
>          Magic-Num Option (0x05), length 6: 0x027e2bf2
>          MRRU Option (0x11), length 4: 1520
>          End-Disc Option (0x13), length 9: MAC 00:a0:c8:40:68:c2
> 17:40:12.685070 Out LCP, Conf-Reject (0x04), id 153, length 15
>        encoded length 13 (=Option(s) length 9)
>          End-Disc Option (0x13), length 9: MAC 00:a0:c8:40:68:c2
>
>
>
>
> Thanks for your time,
>
> Jason
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