Forum Discussion

Srinivas_V's avatar
Srinivas_V
Icon for Nimbostratus rankNimbostratus
Mar 10, 2020

Irule to keep the source IP in udp request

How do we preserve the source ip in udp request and forward the same to backend pool?

I can see that the LB ip in the request when the request comes to pool member but I want to keep the source IP when F5 forwarding the request to pool.

 

Thanks,

S

application delivery
iRules
iRulesLX

1 Reply

Sort By
  • Simon_Blakely's avatar
    Simon_Blakely
    Icon for Employee rankEmployee
    Mar 10, 2020

    Don't set any address translation (no SNAT or SNAT Automap) on the UDP virtual server.

    It's best to use a Performance Layer 4 virtual with Loose Init/Loose Close.

     

    However, the pool member has to be able to respond directly to the source IP, or use the BIG-IP as the default Gateway.