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Forum Discussion

rosh_menon_3375's avatar
rosh_menon_3375
Icon for Nimbostratus rankNimbostratus
Oct 14, 2017

F5 scp load balancing

We have files send to 2 identical nodes via F5 over SSH/22 and performance L4 (round robin algorithm) and we are trying to load balance the files evenly between the nodes.

 

However the F5 is not distributing the files evenly. For eg: If client sends 24 identical files, sometimes 9 of them went to node1 and 15 went to node 2. The numbers are very random.

 

The client uses SCP to connect to the F5 for pushing the files.

 

Is there a reason why files are not evenly distributed? Does SCP makes multiple TCP connections for each file transfer?

 

application delivery
BIG-IP
devops
LTM

1 Reply

  • Kevin_Davies's avatar
    Kevin_Davies
    Icon for Nacreous rankNacreous
    Oct 14, 2017

    See the section marked "Load balancing behavior for CMP-enabled virtual servers" in article K14358 to better understand the behaviour.

     

    Then change your load balancing method to least connections.