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Forum Discussion

TMH's avatar
TMH
Icon for Nimbostratus rankNimbostratus
Oct 16, 2025

Virtual Server Configuration requirements for ISO 8583 traffic (Single persistent TCP session)

I'm currently working on tuning an F5 Virtual Server to handle ISO 8583 financial transaction traffic, and I’d appreciate insights from anyone with experience in similar environments.

The ISO 8583 traffic runs over a single persistent TCP session and is highly sensitive to latency even minor delays or retransmissions can affect transaction performance.

I want to ensure the F5 configuration is optimized for low latency, session stability, and efficient packet handling. I'd also appreciate advice on the appropriate Virtual Server type, TCP profile tuning, and other performance considerations.

Thanks in advance,

application delivery

1 Reply

  • Aswin_mk's avatar
    Aswin_mk
    Icon for MVP rankMVP
    Oct 16, 2025

    Hi,

      two ready-to-apply tmsh configuration bundles:

    1. Standard L4 proxy (low-latency, but still full-proxy capabilities), or
    2. Pure FastL4 kernel-forwarding (lowest latency, almost wire-speed).

    we can try the performance Layer 4 type, apply a FastL4 profile(This bypasses the full TCP proxy and provides kernel-level packet forwarding.)