Frequently Asked Questions


What are the Advantages and disadvantages of Direct Server Return (DSR)?


  • Direct Server Return is ideal for high-bandwidth requirements such as content delivery networks, video games and multimedia.
  • DSR keeps existing IP addresses of the Real Servers


  • Works at L4 only
  • Source IP persistence only, No Layer 7 Persistence
  • Requires configuration on Real Servers
  • No Layer 7 Functionality such as SSL offloading, caching, compression, IPS and Content Switching.

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