Download rate in IRC

[DenZ]

I'm in Australia, yes yes, we get ****e connections here.
The DSL service is pretty good though, I'm on the 512/128k plan and all's fine. I get transfer rates of up to 52kbps from websites but on IRC it's a different issue.
When I try to download files through File Servers i start of with 11kbps and then it gradually drops till and finally the connection just drops off entirely. I don't undertsnad this, I've done speed tests and all's fine, it confirmed that my connection is 512 and my transfer rate is 52. U could argue that Users running Fserves may have ****e connections but most of them have a standard 2mbps connections. Why then am I downloading at a rate of 11kbps and get dropped off from them??

[mccoffee]

The reason it's dropping is the person sending u the file has a min cps set on there server so for eample you wanted to download a file off me I had my min cps to let's say 10kbs if you don't make that 10 after a certain point then it will drop you.

[DenZ]

I know that's the case
but what i want to know
why can't I make it??

[mccoffee]

It could be that server you are connecting to is really really far away, or network congestion on the mirc server, we could try tweaking ur connection to see if it helps take a tcpip analyzer below me thease settings should help.


Connect to the closet severs to you in mirc.

[DenZ]

TCP options string = 0204058c01010402
MTU = 1460
MTU is not fully optimized for broadband. Consider increasing your MTU to 1500 for better throughput.
MSS = 1420
MSS is not fully optimized for broadband (although it might work well for slower connections). Consider increasing your MTU value.

Default Receive Window (RWIN) = 65320
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 65320

RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
522560 (MSS x 46 * scale factor of 8)
261280 (MSS x 46 * scale factor of 4)
130640 (MSS x 46 * scale factor of 2)
bandwidth * delay product:

Your RcvWindow limits you to: 2612.8 kbps (326.6 KBytes/s) @ 200ms
Your RcvWindow limits you to: 1045.12 kbps (130.64 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 113 hops

TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000



What does this all mean??

[mccoffee]

Do you have to login every time to get on the net.

[mccoffee]

Your mtu is off this could be alot of ur promblems mtu is maxium transmission unints please reply back with the login so i do which mtu to use.

[DenZ]

I don't have to login everytime to get on the net. If u mean "proxy" login.
I just open whatever i want to run and it runs straight of the ADSL line.
Which login are u talking about??

[mccoffee]

is is ur dsl pppoe or ppoa login if you have use any program to get on the net enter a user name and password b4 using the net.


Also if you are using a proxy server that could explain the mirc trouble.

[DenZ]

Im using PPoe login (I configured the router so im sure it's ppoe)
i don't use any program to access the net
and no im not behind a proxy

[mccoffee]

what model of router your mtu should be 1492 or 1480 if ur using windows xp.




If you are on windows xp this should work
http://www.broadbandnuts.com/index.php?board=8;action=display;threadid=2150 follow this wizard first even though you are not going to use the connection it will and should fix mtu to 1480 if you are on windows xp reboot after wizard take another tcpip analyzer if mtu is the same it's on the router somewhere.

[DenZ]

How will MTU affect my performance
what does it do actually??

[mccoffee]

Mtu maxium transmisson unit this is from www.dslreports.com i din't feel like typing and trying to explain.

The MTU setting controls the maximum ethernet packet size your PC will send (you did know the internet works in packets, didn't you?). Why a limit? because although larger packets can be constructed and sent, Your ISP and Internet backbone routers and equipment will chop up (fragment) any larger than their limit, then these parts are re-assembled by the target equipment before reading. This fragmentation, and re-assembly is not optimal.

[DenZ]

TCP options string = 0204058c01010402
MTU = 1460
MTU is not fully optimized for broadband. Consider increasing your MTU to 1500 for better throughput.
MSS = 1420
MSS is not fully optimized for broadband (although it might work well for slower connections). Consider increasing your MTU value.

Default Receive Window (RWIN) = 65320
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 65320

RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
522560 (MSS x 46 * scale factor of 8)
261280 (MSS x 46 * scale factor of 4)
130640 (MSS x 46 * scale factor of 2)
bandwidth * delay product:

Your RcvWindow limits you to: 2612.8 kbps (326.6 KBytes/s) @ 200ms
Your RcvWindow limits you to: 1045.12 kbps (130.64 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 113 hops

TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000



I've done the installation but MTU is still at 1460

[mccoffee]

What is make and model of ur router???

[DenZ]

Its a modem and router in one
D-Link DSL-504

[mccoffee]

http://www.dlink.co.nz/tech/drivers/files/routers/dsl504.htm go here and download and insall the lastest firmware it should have ppoe fix in the zip file there should be a how to update firmware you have to get every version b4 the lastest.

[mccoffee]

http://bc.whirlpool.net.au/bc-hw.cfm?id=10 this may help u too seems like alot of people were having the same promblem.