Date: Tue, 4 Sep 2001 11:38:16 -0700 (PDT) From: Julian Elischer <julian@elischer.org> To: Len Conrad <LConrad@Go2France.com> Cc: freebsd-net@freebsd.org, ericdahan@meiway.com Subject: Re: PPPoE dying too long Message-ID: <Pine.BSF.4.21.0109041135010.18360-100000@InterJet.elischer.org> In-Reply-To: <5.1.0.14.0.20010904123753.05df08f8@mail.Go2France.com>
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You can help us understadn this by doing the following: while doing the tests or when experiencing difficulties, run "tcpdump" on the ethernet interface attached to the DSL modem. It knows how to interpret PPPoE packets and we can see whether there are any packets coming in or out and if so, what they are. Tjos will help us work out what the problem is. thanks for using FreeBSD, and for reporting yuor problem to us! we will help as much as we can.. On Tue, 4 Sep 2001, Len Conrad wrote: > Prior to installing in a customer site, we=B4ve been running a 4.3R and P= PPoE=20 > into a banal Alcatel ADSL bridge, "Home Speed" or somethting, in France a= s=20 > LAN router/ipfilter firewall. All seems to be running well, but after ve= ry=20 > long observation, we don=B4t like: >=20 > 1. pinging from an LAN station to the ip of the upstream WAN port, we=20 > observe 5 to 10% ping loss. It=B4s ADSL from France Telecom , sh!t is to= be=20 > expected. >=20 > 2. pinging from internet to the FreeBSD ethernet/PPPoE interface, we see= =20 > similar ping loss. cool, it=B4s symmetrical. >=20 > 3. what=B4s disturbing is that from the inside, we sometimes see total=20 > disconnects of 3 minutes or more, where ping just times out 20 times or s= o,=20 > 5 second timeouts. We don=B4t see these long disconnnects when pinging = from=20 > internet to FreeBSD. >=20 > 4. During these long disconnects, we can sometimes shorten them by=20 > refreshing a website page from the LAN to Internet, ie, it seems that we= =20 > can get PPPoE, dead to ping and POP3 mailbox checks, going again by hitti= ng=20 > a website. But, this is not a reliable technique. >=20 > We can=B4t fix the crappy ip over ADSL from FT, but what can we do to pre= vent=20 > what appears to be long timeouts in the PPPoE to Internet provoked by los= t=20 > packets, which renders the FreeBSD solution unuseable. >=20 > here=B4s our ppp.conf: >=20 > set log Chat Warning Alert Error Connect >=20 > set device PPPoE:ste0:meidsl > set speed sync > set mru 1454 > set mtu 1454 > set ctsrts off > enable lqr > add default HISADDR > set timeout 0 > set redial 0 0 > enable lqr > set lqrperiod 2 > accept lqr > #Network Address Translation (NAT) > nat enable no > #nat log yes > #nat same_ports yes > #nat unregistered_only yes > enable dns >=20 > meidsl: > set authname mei-ip-n2@adsl-tp2.fsa > set authkey something >=20 > thanks > Len >=20 >=20 > http://MenAndMice.com/DNS-training > http://BIND8NT.MEIway.com : ISC BIND 8.2.4 for NT4 & W2K > http://IMGate.MEIway.com : Build free, hi-perf, anti-abuse mail gateways >=20 >=20 > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-net" in the body of the message >=20 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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