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Re: [perfsonar-user] question about Perfsonar traffic source port randomization


Chronological Thread 
  • From: Mark Feit <>
  • To: Edvinas K <>, "" <>
  • Subject: Re: [perfsonar-user] question about Perfsonar traffic source port randomization
  • Date: Wed, 24 Oct 2018 10:39:04 +0000
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Edvinas K writes:

 

Do the Perfsonar is able to randomize source ports to avoid load balancing-polarization problem - where all traffic goes through one link ? If yes - how to implement that ? Thanks 

 

It’s not something we support explicitly, but most of the underlying tools (e.g., iperf) leave the choice up to the kernel.  Which port is selected will depend on how the net.ipv4.ip_local_port_range sysctl is configured.  Last I looked at the sources for that operation, which port in that range is selected is pseudorandom.

 

--Mark

 

 

 


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