Polling function?

RouterOS Wireless Networking
1

I’m setting up a 5gh network with rb133c units and several AP’s in a densely populated urbanisation.

I would like to know how the polling (Wireless interface\Nstreme ) is actually working?
Sometimes I have issue connecting clients that are very close to other clients working from the same AP.
Special if they are almost behind another.

I have ‘polling’ enabled (NOT “Nstreme”) on both the clients as the AP’s.

Range of all Clients are 600 mtrs max. and I think I will keep it down to 40 clients each AP.

Up to now I am setting clients power output such that the AP recieves all connected clients within a range of -50 to -60dbm.

To overcome more problems the more clients enlist I want to know how this polling actually works and with that knowledge can create workarounds if needed.

Rudy

2

I don’t believe that the “polling” option will do anything without actually enabling nstream. It’s an option FOR nstream, not a seperate function.

3

Well, polling is standard enabled, while Nstreame is standard disabled.
Also, nstreame is a way to improbe data througput on wireless links with heavy traffic.
Polling should only be a AP’s tool to tacke the ´Hidden node´ problem of wireless 802.11 networks. I don´t see why is should be combined with nstream.

But then again, I don´t know. Polling could be a great tool to avoid collisions between transmitting clients of the AP if they can’t see each other (´hidden nodes´).

but yes, I do want an explicit answer on the question; If ´polling is enabled´ while nstream is not, is polling then working? Or not?

Who knows the answer?

Rudy

4

Rudy -
Polling ONLY applies to Nstreme in this case.

There is already a ‘polling’ mechanism in ‘standard’ 802.11 - it is called CSMA. It is not controllable by you, the user.

In ROS 3.0x you can turn this off but ONLY if you are using Nstreme and have ‘polling’ turned on in Nstreme.

5

Well, in 802.11 polling is to do QoS.
It send the frames in allways in a specific time, no one in 0.1 nano, the other 0.3 before another in 0.2… it´s allways like 0.2, 0.2, 0.2… i don´t know if it´s in frequency or the packges but it´s something like this…

i´m right??

6

Polling doesn’t work without nstreme.
It is enabled by default for convenience.
It really should have been grayed while nstreme was disabled but to each his own.