Re: [freenet-support] Modem lines MTU?
On Thu, Jan 20, 2005 at 01:04:23PM +, Ben Golding wrote: > > > 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 the max MTU is in fact 28 bytes more (1500). > > I think it is time to kill this thread unless anyone has any > freenet-specific issues with MTUs. The point is not that we have issues now, it's that we may have issues when we implement freenet 0.7 UDP. > > Ben -- Matthew J Toseland - [EMAIL PROTECTED] Freenet Project Official Codemonkey - http://freenetproject.org/ ICTHUS - Nothing is impossible. Our Boss says so. signature.asc Description: Digital signature ___ Support mailing list Support@freenetproject.org http://news.gmane.org/gmane.network.freenet.support Unsubscribe at http://dodo.freenetproject.org/cgi-bin/mailman/listinfo/support Or mailto:[EMAIL PROTECTED]
[freenet-support] Error on Win98
"> A few days ago I heard of a new filesharing systems. What was the new filesharing system you heard about? -todd" LOL!! Man, that was funny! ;-) ___ Support mailing list Support@freenetproject.org http://news.gmane.org/gmane.network.freenet.support Unsubscribe at http://dodo.freenetproject.org/cgi-bin/mailman/listinfo/support Or mailto:[EMAIL PROTECTED]
Re: [freenet-support] Modem lines MTU?
> > 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 the max MTU is in fact 28 bytes more (1500). I think it is time to kill this thread unless anyone has any freenet-specific issues with MTUs. Ben ___ Support mailing list Support@freenetproject.org http://news.gmane.org/gmane.network.freenet.support Unsubscribe at http://dodo.freenetproject.org/cgi-bin/mailman/listinfo/support Or mailto:[EMAIL PROTECTED]
Re: [freenet-support] Modem lines MTU?
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 PPPoA) are used on some ADSL networks. > 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. -- Mika Hirvonen <[EMAIL PROTECTED]> ___ Support mailing list Support@freenetproject.org http://news.gmane.org/gmane.network.freenet.support Unsubscribe at http://dodo.freenetproject.org/cgi-bin/mailman/listinfo/support Or mailto:[EMAIL PROTECTED]
[freenet-support] Re: Freenet Won't Start
Kevin Steen wrote: On Mon, 2005-01-17 at 13:49, Todd Walton wrote: On Mon, 17 Jan 2005 14:35:45 +0100, Alex R. Mosteo <[EMAIL PROTECTED]> wrote: Interesting, I will try to start with a clean freenet.ini. Thought I haven't changed any setting (directly nor with the configtool) when freenet ceased to work. Same here. The other problem to check for is a zero-byte or corrupted 'node' file. Rename the file and see if Freenet starts. If it still doesn't start, put the original file back so as to preserve your node's identity You were right. My node file was truncated (I noticed after comparing with a new one). Furthermore, I'm almost sure it was due to a temporary space sortage in my hard disk. What's the utility of preserving the node identity? What I lose when changing it? Thanks, A. Mosteo. ___ Support mailing list Support@freenetproject.org http://news.gmane.org/gmane.network.freenet.support Unsubscribe at http://dodo.freenetproject.org/cgi-bin/mailman/listinfo/support Or mailto:[EMAIL PROTECTED]
Re: [freenet-support] Modem lines 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: 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? (I'm assuming here you're familiar with the command line) First, get your gateway's IP address with ipconfig. Then, start pinging it with the dont-fragment bit set: ping -f -l 1500 your.gateway.example If you get this error message: "Packet needs to be fragmented but DF set.", decrease the packet size (1500 bytes), otherwise increase it. Start out with large increases/decreases and keep decreasing the amount you change the packet size. Eventually you'll reach a point where increasing the packet size by one byte results in the error message mentioned above. That is your MTU. Hmm... I thought there was an easier way... whatever. I must remember old PPP connection logs (or was that some other protocol?). FYI, I tested this in the company LAN and the largest value that got through was 1472. Doc ___ Support mailing list Support@freenetproject.org http://news.gmane.org/gmane.network.freenet.support Unsubscribe at http://dodo.freenetproject.org/cgi-bin/mailman/listinfo/support Or mailto:[EMAIL PROTECTED]
Re: [freenet-support] Modem lines MTU?
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 = 1500 is normal for Ethernet LANs. > > How can I find out the MTU for my dial-up on a W2K machine? (I'm assuming here you're familiar with the command line) First, get your gateway's IP address with ipconfig. Then, start pinging it with the dont-fragment bit set: ping -f -l 1500 your.gateway.example If you get this error message: "Packet needs to be fragmented but DF set.", decrease the packet size (1500 bytes), otherwise increase it. Start out with large increases/decreases and keep decreasing the amount you change the packet size. Eventually you'll reach a point where increasing the packet size by one byte results in the error message mentioned above. That is your MTU. ___ Support mailing list Support@freenetproject.org http://news.gmane.org/gmane.network.freenet.support Unsubscribe at http://dodo.freenetproject.org/cgi-bin/mailman/listinfo/support Or mailto:[EMAIL PROTECTED]
Re: [freenet-support] Modem lines MTU?
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? Doc ___ Support mailing list Support@freenetproject.org http://news.gmane.org/gmane.network.freenet.support Unsubscribe at http://dodo.freenetproject.org/cgi-bin/mailman/listinfo/support Or mailto:[EMAIL PROTECTED]
