Chris,
http://mirror.switch.ch/rfc/4638.txt describes exactly the discussed topic.
btw it also states that no current IEEE standard supports the use of "jumbo
frames" altough these are widely used in various network scenarios.
stefan
-----Original Message-----
From: swinog-bounces(a)lists.swinog.ch [mailto:swinog-bounces@lists.swinog.ch] On Behalf Of
Christian Jouas
Sent: Wednesday, June 13, 2007 11:30 AM
To: swinog(a)swinog.ch
Subject: Re: [swinog] feedback on pppoe needed
PPPoE (over Ethernet) ---> Ethernet max 1500 But I'm very curious if there are some
non standards drafts over ethernet for such kind of applications ?
Chris
>> "Spiess Bernd"
<Bernd.Spiess(a)happynet.at> 12.06.2007 18:00 >>>
thanx for the suggestions - the mtu path discovery problem was the reason why i asked.
fyi: here in austria we have own access to the copper from "telekom austria"
(colocation/"unbundling") we have our own dslaḿs and our own selection of cpés
- so we can build or configure whatever we like.
actually we use static ip on a switched layer 2 vlan-trunk environment. if possible we
want to avoid PPPoA because we are no atm people.
as i understand you correct mtu 1492 under PPPoE is still an issue in the mentioned cases.
has anyone tried to build PPPoE with an MTU 1508 infrastructure ?
bernd
-----Original Message-----
From: swinog-bounces(a)lists.swinog.ch
[mailto:swinog-bounces@lists.swinog.ch] On Behalf Of Fabian Wenk
Sent: Tuesday, June 12, 2007 12:52 PM
To: swinog(a)swinog.ch
Subject: [Spam] Re: [swinog] feedback on pppoe needed
Hello Bernd
Spiess Bernd wrote:
as i know many postings around the world regarding
pppoe mtu problems
and advices to customers to reduce mtu on their clients down to 1492,
i wanted
The problems with MTU 1492 could be on other places, eg. if a web server admin decides to
filter ICMP on his server which will prevent Path MTU Discovery to work. For example this
can have the effect, that from a website (hosted on a server which does not get the ICMP
messages) the HTML part arrived (smaller then 1500 bytes), but the corresponding pictrures
do not. I did once write a paper about the ADSL MTU problem, see "Swiss ADSL with
PPPoA (and MTU 1500)" [1] for more informations.
[1]
http://www.wenks.ch/fabian/ADSL-PPPoA.html
I hope for you, that ADSL with PPPoA will also work in Austria.
bye
Fabian
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