BAndwidth per user

[sn8kez]

ok we have ntl 512 cable and it goes into a router but if we upload then it saturates the upstream so we can downlaod any faster than 14k asec if there a program that will let us limit the upload speed on each computer ?

very simler to what you can do in peer to peer progs like limewire


any help would be good thanks

[piddle spank]

:p:wrong forum area p3on:p:

[SmartMonkey]

Not sure what your problem is, I would say check your router, on a cable modem upload and download channels are discrete and dont affect each other.
Here on our NTL cable modem the three of us cam max out the upload on the modem and still Dl at speeds in excess of 64kbytes/sec (64Kbytes/sec=512Kbits/sec)
I use a Netgear RP114 router with the current firmware (version 3.25)

SmartMonkey

[Cabe]

piddle, how is this the wrong forum area?

*As he crushed the insolent MAC user under his mighty PC boot, crys of "death to the heathen" could be heard throughout the LANd*

Router Make / Model would help though.

[piddle spank]

cabe when i posted that it was in General chat.

i am the one in the house with sn8kez. we have had router replace once. there seems nothing wrong with the router software. its all very confusing. we were sure that cable was duplex. it dont matter too much we are upgrading to 1mb so we will see if that helps

----
edit: oh yeah we are using a SMC barracde router
----

[bvark]

When you're making big downloads from the internet, you're sending back a lot of small acknowledgement packets to say you've received the data.

If you fill up your upstream connection, you'll prevent or delay some of these acknowledgements from getting through, which will have a negative effect on your download speed.
Upgrading to 1Mbit might help this problem slightly (if you get a bigger upstream channel), but the problem remains - if you fill the upstream channel, your downloads will suffer.

FreeBSD's dummynet is the only free tool I can think of to do bandwidth management, but I'm sure there must be others, including Linux and Windows ones.

[tiSSue]

QoS Service?

[piddle spank]

where can i grab that dummynet?

i am on OSX which has a FreeBSD subsystem so i think it may work

[KermitTheFrag]

QoS doesnt work very well over CM/DSL interfaces for some reason - dont ask me why!

If you wish to bandwidth restrict, the only products are really the BSDs firewall implementations, Dedicated top end hardware and Microsoft's ISA server. Otherwise you are on your own.

The problem you have is most likely how the router software works, and how it handles the packets, not necessarily the connection ...

OSX doesnt have dummynet I dont think. I did look for it in the darwin source code but saw nothing about it. I may be wrong.

[bvark]

Umm, QoS almost certainly doesn't work because the router/CM head end totally ignores any QoS flags you send it :)
Treating packets differently based on ToS bits is something that's almost totally unimplemented on the internet at large, since the priority-based queuing involved is rather CPU intensive.

I would be surprised if dummynet works on OSX - OSX doesn't use much of the BSD device code which dummynet is dependant on.

Dummynet's homepage is http://info.iet.unipi.it/~luigi/ip_dummynet/

[KermitTheFrag]

Originally posted by bvark
Umm, QoS almost certainly doesn't work because the router/CM head end totally ignores any QoS flags you send it :)
Treating packets differently based on ToS bits is something that's almost totally unimplemented on the internet at large, since the priority-based queuing involved is rather CPU intensive.
I meant for example crappy alcatel frog plugged in back of win2k box for example - the device is a physical PPP device to the kernel therefore any packet level stuff should be handled by the stack. I would have thought that QoS worked at kernel level on that link but it appears not to work at all. (that assumes 2 machines downloading using a QoS enabled machine as a gateway via the ADSL modem)...

ToS is like IPv6 - nice but it aint happening yet :(

[Fembot]

Originally posted by KermitTheFrag

If you wish to bandwidth restrict, the only products are really the BSDs firewall implementations, Dedicated top end hardware and Microsoft's ISA server. Otherwise you are on your own.


Actualy linux has pretty damm good QoS and bandwith control stuff in the later 2.4.x serieshttp://ds9a.nl/2.4Networking/HOWTO//cvs/2.4routing/output/2.4routing.html (http://http://ds9a.nl/2.4Networking/HOWTO//cvs/2.4routing/output/2.4routing.html)

[KermitTheFrag]

It's there - its just crap.

Plus I wouldnt stick linux in anywhere as a `network appliance' - only process servers/desktop. *BSD's stack is a tad more mature and has all the funky bits in it :)

[Fembot]

its never let me down yet, and ill ignore that blatent attempt to start world war 3 :-)

[Cabe]

look if you just stayed away from WOPR you would have been ok.....

[KermitTheFrag]

Originally posted by Fembot
its never let me down yet, and ill ignore that blatent attempt to start world war 3 :-)
Sorry wasnt intended to be a troll. I just had problems with it. I got it working ok, just it started losing packets and leaking memory after a few days... That was with Kernel 2.2.16 so I should try it on something newer :)