Higher Speed, Closer To Tower

[WickedWeasel]

Him I am almost next door the Bryanstone Water Tower however, I cannot get higher than 200k download.

Any Ideas ?

[Gatecrasher]

Is that a speed test? Or a file transfer? Local or International?

I've found that I can download much faster than the speed test results would suggest.

I'm beginning to wonder whether these speed tests are actually appropriate for Iburst technology. :confused:

[slimothy]

Speed tests often use one thread where as download managers use more than one thread, so lets say a server can give you 30KBps and you put that link in a download manager that will start 4 threads, that will end up with a combined download speed of 120KBps.

[ic]

I recommend that you study the color-keys on the coverage maps on iBurst.co.za when it is resurrected.

In the meantime try
http://www.iburst.co.za/rolloutpics/bryanston.html

You will see that the stronger the signal strength in your area, the better your download speed (note no mention of upload speed).

In an area where you have poor upload speed it stands to reason that upload packets will get dropped, and that means that acks of download packets will also be dropped - leading to retransmissions of download packets, which will slow down the download as it will take longer to download with all the retransmissions.

I feel like I have just written a convoluted thesis or something...

[ic]

Him I am almost next door the Bryanstone Water Tower however, I cannot get higher than 200k download.

Any Ideas ?WW, just wondering if you are still getting this problem, and more important to me personally - which side of Bryanston-bs are you on (North South East West)?

[AcidRaZor]

Depending on how close you are to the tower, the signal might overshoot you in such a manner that you can't get real high download speeds that close. Proven with Sentech, iBurst might be different.

However, there are known problems with the Bryanston tower as ic suggested, I think it's best if you route your customers through somewhere else in the meantime.

[kmclellan]

hi all
found some info on an Aussie site about iburst.
try this
When you are using USB try this:

"Ping -f -l (SIZE) www.iburst.co.za

Where size is between 500 to 1500

If it says "Packet needs to be fragmented" try a lower value until it stops saying that

That SIZE value is your MTU, which you have to put into your router.

If it doesnt work tell us."

Mine seems very happy at 1370 lot less frame errors. just got mozilla down at 32. Nearly fell of my chair.

regards
K

[AcidRaZor]

I never changed any kind of MTU setting and I get full speeds (over 100kb/s) when mutlithreading...

It's like the early Sentech days when the problems started happening "if you cover your left nut with tin foil, you might see some improvement in your connection speed"

I think not my friends...

[ic]

WBS definitely changed the MTU on routers somewhere - I think sometime in December. I know this bcos I did my whole MTU & RWIN optimisation thing in November, and I was using an MTU of 1432 with no fragmentation. Then there were problems in December, and the WBS recommendation was MTU of 1392. The last time I tested I got fragmentation above 1402.

Noone, you probably have MTU Path Discovery enabled ;)

[AcidRaZor]

MTU Path whatchamacallit?

I have Windows XP Professsional.... wtf?

porn?

[ic]

MTU Path whatchamacallit?Try finding it under TCPIP/Parameters in the registry as per following thread.

[AcidRaZor]

parameters?

/me moer ic

wtf?

[ic]

parameters?

/me moer ic

wtf?How2-Set-iBurst-MTU-4-Windows2000Professional, should be fairly similar to XPP.

[AcidRaZor]

Mine was set to 1400 :P

[AcidRaZor]

Why would I see fragmentation problems again? Is it something like "rust guard" that you buy for your new car, no one (not me) knows what it does, but they charge you extra for it?

[ic]

Mine was set to 1400 :PAn MTU > 1392 will definitely give you problems where packets are being fragmented, which will result in a major slowdown, best to stick with MTU == 1392. I am going to update the other MTU & RWIN thread I started a while back.