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  • 1.  loal-balance per-flow vs per-packet

    This message was posted by a user wishing to remain anonymous
    Posted 03-20-2025 10:04
    This message was posted by a user wishing to remain anonymous

    Hello.
     
    I have a question about load-balance per-flow vs per-packet difference.

    I'm curious about the difference between the "set policy-options policy-statement ECMP then load-balance per-flow" and "set policy-options policy-statement ECMP then load-balance per-packet" commands.


    If you go to the URL, it says that if you type "load-balance per-packet" it will work as "per-flow".

    Configuring Per-Packet Load Balancing

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    Configuring Per-Packet Load Balancing
    In Junos OS, you enable per-flow load balancing by setting the load-balance per-packet action in the routing policy configuration. The naming may be counter-intuitive, because in Junos, per-packet load balancing is functionally equivalent to what other vendors may term per-flow load balancing.
    View this on Juniper >



  • 2.  RE: loal-balance per-flow vs per-packet

     
    Posted 30 days ago

    There's a bit of legacy behind this but indeed when you configure "load-balance per-packet" it effectively does per-flow-loadbalancing.

    The setting "load-balance per-flow" has been recently added for a more correct naming, and the "load-balance per-packet" is effectively deprecated, but will continue to be present because many people have this as an important part of their configuration.

    So essentially: "load-balance per-flow" is the correct way to configure it, but "per-packet" is still there and works exactly the same, but is purely maintained for legacy purposes.

    As it says on Configuring Per-Flow Load Balancing | Junos OS | Juniper Networks : "Note: You can use the load-balance per-packet or load-balance per-flow option, and both have the same functionality." 


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