Community discussions

MUM Europe 2020
 
ksswd
Frequent Visitor
Frequent Visitor
Topic Author
Posts: 60
Joined: Thu Feb 17, 2005 4:26 pm
Location: Poland

Why p2p kills 2.4Ghz network ?

Mon Feb 05, 2007 11:55 am

I have a theoretical question. Everybody knows that unlimited p2p is a killer for 2.4 Ghz netrworks. What's the main factor? Amount of data to handle, too many connections, too big pps rate or anything else?

Piotr
 
User avatar
Equis
Forum Veteran
Forum Veteran
Posts: 888
Joined: Mon Jun 06, 2005 6:48 am

Mon Feb 05, 2007 12:34 pm

Its like a ddos on your network :-(

I think because wireless is half duplex is teh problem

People upload and download at the same time
 
User avatar
janisk
MikroTik Support
MikroTik Support
Posts: 6283
Joined: Tue Feb 14, 2006 9:46 am
Location: Riga, Latvia

Mon Feb 05, 2007 2:52 pm

yes, Equis is correct as p2p is upload and download but wifi card in only half duplex (unless it is dual nstream)
 
jo2jo
Forum Veteran
Forum Veteran
Posts: 968
Joined: Fri May 26, 2006 1:25 am

Mon Feb 05, 2007 6:23 pm

how much killing are we talking? number? i'm about to be providing to some residental appartments and this would be useful info.

btw; i though even nstream 1 combats the half duplex issue..i have little expericne with it however.

thanks.
:beep :beep :beep
 
pedja
Long time Member
Long time Member
Posts: 684
Joined: Sat Feb 26, 2005 5:37 am

Mon Feb 05, 2007 9:12 pm

Problem is too many connections at the same time. It kills even LAN.
 
jo2jo
Forum Veteran
Forum Veteran
Posts: 968
Joined: Fri May 26, 2006 1:25 am

Mon Feb 05, 2007 9:14 pm

im aware of this, i just was curious as to how big the impact on wireless.. specifically when serving laptop clients.

i have one hotel install and on that a que set at 256k upstream and that is generally full always..and i can still get individual 2.4g users with > -83 rssi downloading/ bursting to 3mbit (max of the line) and pings across to a wds repeater still average ~10ms ..this is the only results i know of / have. tks
:beep :beep :beep
 
pedja
Long time Member
Long time Member
Posts: 684
Joined: Sat Feb 26, 2005 5:37 am

Mon Feb 05, 2007 9:47 pm

Wireless is especialy weak on that because of it's nature: time sharing. It simply does not handle large number of small packets well. That's why p2p, some network gaming and VoIP, are always a problem.
 
User avatar
bjohns
Member Candidate
Member Candidate
Posts: 272
Joined: Sat May 29, 2004 4:11 am
Location: Sippy Downs, Australia
Contact:

Tue Feb 06, 2007 3:21 am

I would say its the small packets that cause the most problems. Nstream assists because of its packet packing and polling mechanisms.

I supply a few student accommodation sites via a wireless backhaul and NStream deals with the torrent traffic nicely.
 
jo2jo
Forum Veteran
Forum Veteran
Posts: 968
Joined: Fri May 26, 2006 1:25 am

Tue Feb 06, 2007 4:22 am

any pp/s or Mbit numbers? or actual number of IP address running p2p vs impact on latency?

just trying to plan ahead for a link im setting up..

thanks
:beep :beep :beep

Who is online

Users browsing this forum: achris4 and 23 guests