Ben Golding wrote:
I think 576 is the recommendation for best performance whether on ADSL
or dial-up, several sites seem to confirm this eg:
http://www.jimschrempp.com/features/computer/mtuspeed.htm
MTU = 1500 is normal for Ethernet LANs.
How can I find out the MTU for my dial-up on a W2K machine?
On Thu, 20 Jan 2005 11:18:47 +0200, Constantine Dokolas
[EMAIL PROTECTED] wrote:
Ben Golding wrote:
I think 576 is the recommendation for best performance whether on ADSL
or dial-up, several sites seem to confirm this eg:
http://www.jimschrempp.com/features/computer/mtuspeed.htm
MTU =
Mika Hirvonen wrote:
On Thu, 20 Jan 2005 11:18:47 +0200, Constantine Dokolas
[EMAIL PROTECTED] wrote:
Ben Golding wrote:
I think 576 is the recommendation for best performance whether on ADSL
or dial-up, several sites seem to confirm this eg:
On Thu, 20 Jan 2005 11:49:12 +0200, Constantine Dokolas
[EMAIL PROTECTED] wrote:
Hmm... I thought there was an easier way... whatever. I must remember old
PPP connection logs (or was that some other protocol?).
Yes, PPP is used to encapsulate TCP/IP over modem lines. PPP's
derivates (PPPoE and
FYI, I tested this in the company LAN and the largest value that got
through was 1472.
Ethernet's MTU is 1500. IP uses 28 bytes, so that leaves 1472 bytes
for data. UDP uses additional 8 bytes and TCP 20 bytes.
Thanks Mika, in other words if you can ping with -l 1472 as the
maximum, then
What's the typical MTU on a modem? Someone said he had seen one with 256
bytes, but is that typical?
--
Matthew J Toseland - [EMAIL PROTECTED]
Freenet Project Official Codemonkey - http://freenetproject.org/
ICTHUS - Nothing is impossible. Our Boss says so.
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Yuck! I'm skeptical... Could well be snake oil. Please find me an
internet standard that mentions an MTU of 576 bytes - or even some cisco
documentation. It seems pretty clear that bigger is better within the
limits available...
On Wed, Jan 19, 2005 at 04:32:02PM +, Ben Golding wrote:
I
On Wed, Jan 19, 2005 at 04:36:11PM +, Toad wrote:
Yuck! I'm skeptical... Could well be snake oil. Please find me an
internet standard that mentions an MTU of 576 bytes - or even some cisco
documentation. It seems pretty clear that bigger is better within the
limits available...
Toad Please find me an internet standard that mentions an MTU of 576
bytes
RFC879 HOSTS MUST NOT SEND DATAGRAMS LARGER THAN 576 OCTETS UNLESS
THEY
RFC879 HAVE SPECIFIC KNOWLEDGE THAT THE DESTINATION HOST IS
PREPARED TO
RFC879 ACCEPT LARGER DATAGRAMS.
RFC879
RFC879 This is a
Are you saying that hosts are required to support MTUs of at least 576
bytes? People have said that some dialup connections use 256 byte
MTUs...
On Wed, Jan 19, 2005 at 06:04:25PM +, Ben Golding wrote:
Toad Please find me an internet standard that mentions an MTU of 576
bytes
RFC879
On Wed, 19 Jan 2005 19:16:44 +, Toad [EMAIL PROTECTED] wrote:
Are you saying that hosts are required to support MTUs of at least 576
bytes? People have said that some dialup connections use 256 byte
MTUs...
Hrm. Dialup. The MTU includes the PPP header is max. 30 bytes, IP
header can be a
On Wed, 19 Jan 2005, Toad wrote:
Are you saying that hosts are required to support MTUs of at least 576
bytes? People have said that some dialup connections use 256 byte
MTUs...
RFC879 HOSTS MUST NOT SEND DATAGRAMS LARGER THAN 576 OCTETS UNLESS
Isn't MTU something which is
Are you saying that hosts are required to support MTUs of at least 576
bytes? People have said that some dialup connections use 256 byte MTUs...
Since it says HOSTS MUST NOT SEND DATAGRAMS LARGER THAN 576 OCTETS
there is no inherent contradiction when it is *smaller* then 576, me thinks?
On Wed, 19 Jan 2005 18:04:25 +, Ben Golding [EMAIL PROTECTED] wrote:
Anyway, here is some interesting info about finding your personal max
MTU:
http://www.internetweekly.org/llarrow/mtumss.html
http://members.tripod.com/~EasyMTU/easymtu/findmtu.html
Nifty. I'm getting somewhere between
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