PPP ISDN Dual Channel Issues. [LONG]

[Chris Raven]

FWIW, I believe UKOnline.co.uk do allow channel bonding (at least the did when I used it - now I'm ADSL).

For ISDN I found them pretty damn fast (getting the 15+ KB/s bonded) and reliable as anything. They also refrain from charging subscription which is rather pleasant too .....


Cheers,
Chris R.


PS They don't do ADSL but, the parent group Easynet does. So I went with them :o)



Quoting Brian Somers <brian at awfulhak.org>:

> Demon don't support multi-link unless you're using their test 
> equipment.  I've asked for ``test status'' but haven't heard anything 
> back.
> 
> Demon's current equipment negotiates multi-link, and may even handle 
> it one in N times (replace N with the number of Demon ppp servers 
> you might connect to), but the rest of the time, you end up talking 
> to two different pieces of equipment that are stupid enough to 
> announce themselves as being the same and then each try to establish 
> an IP layer.  Chaos ensues.
> 
> FWIW, I currently have a Demon account, but I haven't tried 
> multi-link in a few months.
> 
> > Hi,
> > 
> > Since Neil's had his fun I thought it was time for us to mail out some
> of
> > our issues with userland ppp, I hope your not bored yet guys :-)
> > 
> > Right,  the problem is when using both channels on the isdn line it
> seems
> > that the second will not stay up and be stable like the first channel.
>  If
> > we only run one channel everything is fine but if we attempt to bring
> up
> > both channels at the same time the second channel will not stay and
> keeps
> > dropping and coming back up indefinetly.  Being no expert in ppp I
> decided
> > to put an afternoon aside to read the man from top to bottom and came
> up
> > with the following configuration, partly modified from the isdn
> example in
> > /usr/share/examples/ppp/ppp.conf.isdn.  Our ISP is demon internet and
> as far
> > as I can tell support multilink fine.
> > 
> > isdn:
> >  set phone 08450798665  # Replace this with your ISPs phone number
> > 
> >  set authname bleh # Replace these with your login name & password.
> >  set authkey bleh     # This profile assumes you're using PAP or
> CHAP.
> > 
> >  set enddisc mac        # Assuming you have a LAN
> > 
> >  enable lqr
> >  set reconnect 3 5
> >  set redial 3 10
> >  set lqrperiod 45
> >  disable pred1 deflate mppe
> >  deny pred1 deflate mppe
> > 
> >  set timeout 60 300     # The minimum charge period is 5 minutes, so
> don't
> >                         # hangup before then
> > 
> >  # We have no chat scripts in the ISDN world (yet)
> >  set dial
> >  set login
> >  set logout
> >  set hangup
> > 
> >  set device /dev/i4brbch0 /dev/i4brbch1         # Raw B-channel
> devices
> >  set speed sync                                 # ISDN is synchronous
> > 
> >  # Take a wild guess at an IP number and let the other side decide
> >  set ifaddr 172.16.0.1/0 212.0.0.0/0 0 0
> >  add! default hisaddr
> > 
> >  set mrru 1500                          # Multilink mode please
> > 
> > #
> >  clone 1,2
> >  link deflink remove
> >  link 1,2 set mode ddial
> > 
> > 
> >  set mru 1504                           # Room for the MP header
> > 
> >  set server /tmp/ppp-isdn "" 0177       # The diagnostic port
> (-rw-------)
> > 
> > Ok, so theres the config.  The box is running 4.3-STABLE, uname -a
> gives the
> > following
> > 
> > FreeBSD nas.claycrossbs.co.uk 4.3-STABLE FreeBSD 4.3-STABLE #10: Wed
> May  9
> > 14:27:27 BST 2001    
> root at nas.claycrossbs.co.uk:/usr/obj/usr/src/sys/ISDN
> > i386
> > 
> > And heres are some entries from syslog.
> > 
> > May 23 11:46:02 nas ppp[77]: Phase: 1: /dev/i4brbch0: CD detected
> > May 23 11:46:02 nas ppp[77]: Phase: 1: carrier -> login
> > May 23 11:46:02 nas ppp[77]: Phase: 1: login -> lcp
> > May 23 11:46:02 nas ppp[77]: Phase: 2: /dev/i4brbch1: CD detected
> > May 23 11:46:02 nas ppp[77]: Phase: 2: carrier -> login
> > May 23 11:46:02 nas ppp[77]: Phase: 2: login -> lcp
> > May 23 11:46:03 nas ppp[77]: Phase: bundle: Authenticate
> > May 23 11:46:03 nas ppp[77]: Phase: 1: his = PAP, mine = none
> > May 23 11:46:03 nas ppp[77]: Phase: Pap Output: claycross ********
> > May 23 11:46:03 nas ppp[77]: Phase: 2: his = PAP, mine = none
> > May 23 11:46:03 nas ppp[77]: Phase: Pap Output: claycross ********
> > May 23 11:46:03 nas ppp[77]: Phase: Pap Input: SUCCESS ()
> > May 23 11:46:03 nas ppp[77]: Phase: mp: Listening on
> > /var/run/ppp--01-44454d4f4e31
> > May 23 11:46:03 nas ppp[77]: Phase:     First link: 1
> > May 23 11:46:03 nas ppp[77]: Phase: 1: lcp -> open
> > May 23 11:46:03 nas ppp[77]: Phase: bundle: Network
> > May 23 11:46:03 nas ppp[77]: Phase: Pap Input: SUCCESS ()
> > May 23 11:46:03 nas ppp[77]: Phase: 2: lcp -> open
> > 
> > This isnt actually whats normally happening, usually both links
> connected
> > and then the second one disconnects and re-connects again repeatedly. 
> I'll
> > try and get the archived logs off the loghost later on today.
> > 
> > If anyone could also provide all the configs needed as well for
> connecting
> > to demon via isdn I would be very gratefull.
> > 
> > Take it easy,
> > 
> > --
> > Simon Griffiths
> > Systems Administrator - Clay Cross Building Society
> > Tel:+44(0)1246 862120 - Fax: +44(0)1246 250397
> 
> -- 
> Brian <brian at Awfulhak.org>                       
> <brian@[uk.]FreeBSD.org>
>       <http://www.Awfulhak.org>                  
> <brian@[uk.]OpenBSD.org>
> Don't _EVER_ lose your sense of humour !
> 
> 
> 
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> 


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