Cpu Usage Vs encryption

RouterOS General
1

Hi,

I understand that not using wireless encryption gives the slightest use cpu.
Now, if we use WEP or WPA or WPA2 .. with TKIP or AES .. which consumes more resources and which less cpu, which allows greater bandwidth??

thk

2

As far as I know, when using cards like RB52/RB52H, which provide with hardware encryption, there is no too much CPU consumed for encryption.

3

thanks sergejs!

I read in some post that use WEP could reduce up to 30% of bandwith, this can be a size extra in each package? and if so, WPA or WPA2 generate less by size package?

4

sorry i use translator, not package.. is packet.

5

marceloru,

In the last January I have started a migration process from almost two thousand of Wi-Fi costumers.

The old Wi-Fi infrastructure were opened, no encryption must required and IP Addressing were fixed.

Nowadays, we are using WPA2/AES with PSK, stored on radius server and tunneling our costumers using PPPoE.

I can say to you with a experience in this subject:

  1. WPA2/AES Doesn’t increase your network latency
  2. WPA2/AES Doesn’t reduce the bandwidth/throughput
  3. WPA2/AES Doesn’t increase CPU usage
  4. WPA2 (read encryption) let you sleep in peace, don’t worrying with your vulnerable network

I hope to help you.


Regards,


HRober

6

thanks HRober

answered all my questions! thank you very much, I’m in the process of migration

Marcelo