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Linux - Networking This forum is for any issue related to networks or networking.
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Old 08-28-2015, 12:59 AM   #1
jota9
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Burst drop network emulator for testing FEC


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.
 
Old 08-28-2015, 02:16 PM   #2
nini09
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Generator control packet length, or you. The neterm control delay, loss, mis order and so on.
 
Old 08-30-2015, 11:03 PM   #3
jota9
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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.
 
Old 08-31-2015, 02:41 PM   #4
nini09
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Packet drop controls by tc command. You can specify packet type in tc command. Just searching traffic control.
 
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Old 09-01-2015, 01:23 AM   #5
jota9
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I understood your reply.

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

Thank you.
 
  


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