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T0nyP's avatar
T0nyP
Icon for Cirrus rankCirrus
Jan 04, 2024

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 Nacreous rankNacreous

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

T0nyP's avatar
T0nyP
Icon for Cirrus rankCirrus
Jan 04, 2024

Hi zamroni777, thank very much for your input. Do you see any related F5 KB article that hash persistence is recommended for LB of ISP?

  • zamroni777's avatar
    zamroni777
    Icon for Nacreous rankNacreous
    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.

    • T0nyP's avatar
      T0nyP
      Icon for Cirrus rankCirrus
      Jan 04, 2024

      Thank you very much for your reply. Appreciate it.