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Server Load Balancing (SLB) and Load Sharing Network Address Translation (LSNAT) Are Not Working

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Information

 
TitleServer Load Balancing (SLB) and Load Sharing Network Address Translation (LSNAT) Are Not Working
Symptoms
Server Load Balancing (SLB) and Load Sharing Network Address Translation (LSNAT) Are Not Working
Environment
  • S-Series
  • Firmware: All versions
Cause
Client and  Real Server are in the same subnet  
Resolution
Move the End Client to a different subnet than the real servers
Additional notes
Connecting the client and real server in the same subnet does not work because the Client initiates the conversation to the VIP but the  server replies directly to the client.  Then the client   drops the reply because it is sourced from the Real IP and not the VIP with which the client started the communication.
 

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