Burst drop network emulator for testing FEC

jota9 · 08-28-2015, 12:59 AM

I want to test an transmitter with FEC(Forward error correction) function.

--Test image--
sender receiver
|transmitter A|---|linux server|--|transumitter B|
--------------

I need network emulator that can drop packets specific successive packets for testing FEC.

I tested "netem".
But , I could not set burst packet length.

Do you know how to set it "netem" or other good network emulator for testing FEC.

nini09 · 08-28-2015, 02:16 PM

Generator control packet length, or you. The neterm control delay, loss, mis order and so on.

jota9 · 08-30-2015, 11:03 PM

If neterm is not netem, Please show me link.
I couldn''t find neterm.

I tested netem. I confirmed netem can drop packet.
But netem's drop rule is random model.
I want to drop packet by uniform.

nini09 · 08-31-2015, 02:41 PM

Packet drop controls by tc command. You can specify packet type in tc command. Just searching traffic control.

jota9 · 09-01-2015, 01:23 AM

I understood your reply.

I tested "tc" filter and police drop.
And I could do what i want .

Thank you.