PPPoE problems
patr...@hermes.usherb.ca
i was wondering if anyone here got his adsl to run flawlessly with openbsd.
It seems like i always get disconnected from my isp after a period of time.
i am sharing this link with NAT and using openbsd 2.7 i386 as a gateway.
The internal lan is sitting on 192.168.1.0 running win98 and linux
This problems seems to apply to Linux also ( using rp-pppoe )
I changed the mru/mtu from 1492 to 1350, etc., doesnt seem to work.
still get disconnected. I also tried to set the highest priority to my ppp
processes ( renice -20 ) but that didnt help.
Anyone ever encountered that kind of problem? Any fix available?
Thanks for your time,
i am using pppoe from Jason Wright
Patrick
Jason Rennie
> I changed the mru/mtu from 1492 to 1350, etc., doesnt seem to work.
> still get disconnected. I also tried to set the highest priority to my ppp
> processes ( renice -20 ) but that didnt help.
I haven't seen any problems wiht rp-pppoe under linux on my link. I've had
it running for up to a week at a time without hassles.
Sometimes my ISP's name servers have problems and i up and down to check
if it is a link problem, but it isn't.
But i've only seen 1 disconnect that i didn't do my self.
Are you using rp-pppoe under open-bsd ?
Jason
Steve Williams
I spent about 20 hours trying to get Jason's PPPoE running.
I trouble shot it to the point where I think there is a deadlock
situation of some kind happening ( more often on slower boxes according
to what people have communicated to me ).
There should be in the archives a few references in the last month to
pppoE, and I have ended up using "Der Mouse" pppoe... it's rough code, but
works flawlessly.
Check the archives...
>
> Hi,
>
> i was wondering if anyone here got his adsl to run flawlessly with openbsd.
> It seems like i always get disconnected from my isp after a period of time.
> i am sharing this link with NAT and using openbsd 2.7 i386 as a gateway.
> The internal lan is sitting on 192.168.1.0 running win98 and linux
>
> This problems seems to apply to Linux also ( using rp-pppoe )
> I changed the mru/mtu from 1492 to 1350, etc., doesnt seem to work.
> still get disconnected. I also tried to set the highest priority to my ppp
> processes ( renice -20 ) but that didnt help.
>
> Anyone ever encountered that kind of problem? Any fix available?
>
> Thanks for your time,
>
> i am using pppoe from Jason Wright
>
> Patrick
>
--
Steve Williams, Calgary, Alberta, Canada
Genie Computer Systems Inc.
st...@genie96.com
"A man doesn't begin to attain wisdom until he recognizes that he is
no longer indispensable."
- Admiral Richard E. Byrd ( 1888-1957 )
Chris Roland
issues, but I think it is on their end. I've had problems ranging from
nameservers going down to my line not working at all.
C.Roland
Darik Horn
Sympatico in South-Western Ontario forcibly disconnects ADSL users every
72 hours to assign a new address. The disconnect times were very
consistent in my area -- usually to within 30 minutes of three days of
continuous connect time.
[]
Jason Rennie
> 72 hours to assign a new address. The disconnect times were very
> consistent in my area -- usually to within 30 minutes of three days of
> continuous connect time.
Isn't it a pity that ISP's have to do things like this to stop warez doodz
(sigh) from using there machines to copy software etc.
I just want to run a mail server on my box, and be able to ssh in when i'm
out, so i have to come up with all sorts of annoying work arounds.
Jason
Jason Rennie
> telephone ISP do. Why? What is the difference? I am just curious.
PPPoE is PPP over Ethernet. Instead of a phone line you have an ethernet
connection, and you simply tunnel a ppp connection over this. You dont
need to dial or anything either.
There isn't really any more too it without going into all sorts of
technical details.
I keep reading comments around the place that this is a very brain damaged
way to do things, but it seems to work and be cheap.
Jason
Steve Williams
The main problem with PPPoE is that it requires a MTU of the standard
ethernet value of 1500 ( ideally, 1492, but could be < )
This presents NO problem if there is just the one host. However, when
NAT is run to serve an internal lan, and there are Windoze boxes on the
internal lan, there are problems serving web pages.
THIS SUX!!
Refer to:
http://www.freebsd.org/FAQ/ppp.html#AEN4192
and:
You might want to checkout the file masq+mtu-trouble.gz at
http://www.inetport.com/~kite/
This is pretty important to know...
Yutaka KAWASE
Jason,
Thank you for your mail. I'm afraid I should not keep posting this
question to 'OpenBSD' mailing list but just one more question, please.
I understood that we don't need to DIAL to ADSL providers. I suppose
that all we need is to connect some device (ADSL modem?) with the
proper set-up to a phone line. Am I correct?
Do we still have a choice of ADSL isp? It seems there is no choice for
me because phone line is like a LAN cable in the world of ADSL. If we
still have choice, is the choice made by changing default gateway to
the Internet? Sounds very interesting.
Jason Rennie
> that all we need is to connect some device (ADSL modem?) with the
> proper set-up to a phone line. Am I correct?
Yes
> Do we still have a choice of ADSL isp? It seems there is no choice for
> me because phone line is like a LAN cable in the world of ADSL. If we
> still have choice, is the choice made by changing default gateway to
> the Internet? Sounds very interesting.
What it requires is that the providewr you want to use ADSL with has a
DSLAM (Digital Subscriber Line Access Multiplexer) at your local
exchange. Then you can connect through any provider that has one in the
excahnge. DSLAM's are just an add on card to most modern digital
exchanges.
The DSLAM looks after connections and routing to the ISP.
Jason
Brian Somers
>
> The main problem with PPPoE is that it requires a MTU of the standard
> ethernet value of 1500 ( ideally, 1492, but could be < )
>
> This presents NO problem if there is just the one host. However, when
> NAT is run to serve an internal lan, and there are Windoze boxes on the
> internal lan, there are problems serving web pages.
>
> THIS SUX!!
>
> Refer to:
>
> http://www.freebsd.org/FAQ/ppp.html#AEN4192
>
> and:
>
> You might want to checkout the file masq+mtu-trouble.gz at
> http://www.inetport.com/~kite/
>
> This is pretty important to know...
Also, take a look at the tcpmssd port under FreeBSD. It should build
fine on an OpenBSD box too.
tcpmssd essentially ``fixes'' the windows traffic.
--
Brian <br...@Awfulhak.org> <brian@[uk.]FreeBSD.org>
<http://www.Awfulhak.org> <brian@[uk.]OpenBSD.org>
Don't _EVER_ lose your sense of humour !
Brian Somers
>
> I spent about 20 hours trying to get Jason's PPPoE running.
>
> I trouble shot it to the point where I think there is a deadlock
> situation of some kind happening ( more often on slower boxes according
> to what people have communicated to me ).
>
> There should be in the archives a few references in the last month to
> pppoE, and I have ended up using "Der Mouse" pppoe... it's rough code, but
> works flawlessly.
Hmm, I'm still of the impression that the problem is that the
socketpair() channel between ppp and pppoe is returning writable on
the select, but failing the write() due to ENOBUFS.
Thinking about this, I wonder if the socket buffers on the socketpair
were reduced to a suitably low value, would the problem go away ?
Alfred Breull
>> Sympatico in South-Western Ontario forcibly disconnects ADSL users every
>> 72 hours to assign a new address. The disconnect times were very
>> consistent in my area -- usually to within 30 minutes of three days of
>> continuous connect time.
>
>Isn't it a pity that ISP's have to do things like this to stop warez doodz
>(sigh) from using there machines to copy software etc.
'... have to do things ...' ?
Is this local (or international) law, does an ISP loose any 'licence'/
permission, or do ISP's do this on their own decision (self-justice) ?
Or is it just a money question (i.e. separating or splitting services
and selling each service extra) ?
Any pointers would be fine.