Forum Discussion

T0nyP's avatar
T0nyP
Icon for Cirrus rankCirrus
Jan 03, 2024
Solved

Recommended Persistence for F5 working as ISP-LB ( ISP Load Balancing )

Hi, Just want to ask based on your implementation experience what is recommended persistence for ISP Load Balancing? ( Source IP Persistence or Destination IP Persistence ) Thanks.
application delivery
Load Balancing ISP
  • zamroni777's avatar
    zamroni777
    Jan 04, 2024

    i cant find related f5 kb on that.
    however, ideal ISP load balancing should persist source&&destination ip address.
    hash persistence allows to create such persistence object.
    if persisting on source ip address only, access from 1 client will only uses 1 isp.

zamroni777's avatar
zamroni777
Icon for MVP rankMVP
Jan 03, 2024

Hash persistence is better choice than source ip address.

Destination ip address is definitely not proper for ISP LB.
It will make, for example access to youtube, goes through only 1 ISP