hi all
i have a problem with ftp, and have been having it for a long time...
it doesnt matter which sw i use, or which server i try to upload to, my speed ALWAYS drops to several bytes per second after a few seconds/minutes of uploading...

iv tried using no compression - no help
no fw, no router, no wireless
nothing

it even happens to me from other computers in the past... what can i be doing wrong..??

thanks

how many "several bytes per second" ? who is your ISP?

does it drop forever until it reaches 0bytes/sec ? do you know if any bytes are actually written on the server side?

cable or adsl?

any other applications running at the same time?

when you say "different computers" - on the same dsl/cable? or in other places? same ISP or not?

נמאס לכם לזכור סיסמאות? לחצו כאן!

basically it drops to 0 as the sw shows it, but i guess its still writing smth because after 10 minutes i might get 15 KB in...
so i do get the data on the other side, but it takes a really long time, and sometimes the connection fails in the middle..

its cable, and right now im on 012, but it was the same on barak

no 2 ftp apps are running at the same time

different computers, different locations, different provider, different ftp server. its like im cursed.

right now im uploading 2.8 MB, for the last...... 4 hours...
=]

cable sucks!!!
move to ADSL!!!

012 SUCK!!! just like BARAK, move to bezeq benleumi

call your ISP and start screaming!!!!

very mature - I am sure your comment will help him a lot...

נמאס לכם לזכור סיסמאות? לחצו כאן!

Please reduce the MTU in your system to 1400. see if it helps. I think you might be sending too big packets for the L2TP pipe, and they just get discarded silently (perhaps the ICMP packet notifying about that gets blocked, so no PMTU discovery is being made).

If you're wondering, "so how come the speed begins high" - that would probably be because of SACKs (Selective ACKs) - the system sends a lot of packets before getting the first ACK, and wants them all to be ACKed together. So they're "sent" but never "received". But the sender doesn't know that. As no ACK ever arrives, no further packets are sent, and thus, the average speed, drops.

Also, When I asked about "other applications", I meant ANY other applications, as any other application can make problems with your connection.

נמאס לכם לזכור סיסמאות? לחצו כאן!

thanks
well, yes there are even several applications open, but i dont see why it should interfere..
im not really 'using up' the bandwidth, even if only for the test..

what ur saying about the acks kinda makes sense..
about the mtu, im on xp, and so im changing it on the registry, but should i just change it on ALL of the interfaces or should i just find the vpn?

thanks

I would start with the VPN only

You may also try to solve the problem by dumping this whole L2TP altogether. You can ask your ISP to be "dialer free" / "MPLS". This solves most problems out there. But let's start with the MTU...

נמאס לכם לזכור סיסמאות? לחצו כאן!

well,ok, a few things..
about going non-vpn, i dont think its gonna happen.. iv been through that before and i really dont want to go though it again, i hate talking to hose monkeys.

about the mtu, as it seems, it was already set to 608, i made some more changes but still nothing, it behaves the same..

ok, let me give you another pointer.
im only 95% sure of it...

i beleive that if i now try to upload to a new server, it will work fine for the, say, first 5 MB,
and after that, this is what will start happening. also, if i 'forget' an ftp for a while [2 weeks], it would act as if new.

voodoo?

re. the non-vpn, i hear you, but they're so incompetent at times that you have no choice; the less things the ISP runs on the way between you and the internet, the lower are the chances they can screw something on the way...

608??? that's very low ... i wouldn't put it on less than 1300 or so...
i wonder what other messing has been done....

What you're describing, sounds, in a way, like an adaptive QoS. Although possible, this sounds a bit insane. Is your FTP using random ports for both ends of the data connection or the well-known "ftp-data" port for traffic? This is controlled by working or not working in passive (PASV) mode. Did you try flipping this bit?

In addition - does this happen indeed on every FTP? By "every", I mean including ones located in Israel? Try ftp://upload:uploads-012@upload.012.net.il and see what you get... (QoS problems tend to influence only connections going outside of Israel)

נמאס לכם לזכור סיסמאות? לחצו כאן!

ok i think we are getting somewhere...
yes it DOES use random ports, and i will now try using different passive modes

and about the isp's ftp, no i have no problem uploading there... full speed...

So we're indeed looking at a QoS problem, it seems. (due to fast upload to an Israeli server)...

This is the main reason I left barak & 012/i-gold...

BezeqInt have their QoS issues too but I think they'll do fine on FTP. I can test if you want to send me credentials in private...

The problem today is that most Israeli ISPs have this weird stupid concept that "INTERNET" = "HTTP"...

(and I didn't use == on purpose!)

נמאס לכם לזכור סיסמאות? לחצו כאן!

yeah i read your post on QoS and nezeqINT, but i do use a lot of http..
and switching isp isnt an option for me. screaming at mine - can be.

i had the same problem , but with ADSL ,screaming at the isp helped me with this issue.

no mtu no passive configuration.

the best solution to avoid the massive qos is to switch to a static IP , these get better priority on the international pipe ( if u can afford it , you should try it for a month at least see if it helps )
you still will have QOS on your line , but less a aggressive one for sure! ( i tested ).

try asking for an ip from the 212.68 pool.
awsome speeds on that one