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LabanM's avatar
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Jul 27, 2022

Load Balance UDP (Retain Source Client IP)

Good afternoon all. I'm hoping someone on here can point me in the right direction.  I am working on a project to load balance UDP traffic to a few backend nodes for some IOT devices. When the IOT d...
  • PeteWhite's avatar
    Jul 28, 2022

    The short answer to this is yes - normal SNAT will work fine. When a request comes into a UDP virtual server, the response will be allowed for an Idle Timeout time ie it emulates the TCP functionality. This timeout is configurable in the UDP profile. You can also disable the treating of this traffic as a flow, and instead treat each UDP packet as a new connection ( useful where using iRules and you want to inspect each packet ). This is called Datagram LB.

    Take a look at K7535: Overview of the UDP profile  for more info