Technical Tip: Load-Balancing Limited to 8 SD-WAN Members

When load-balance mode is enabled in an SD-WAN rule with more than 8 SD-WAN members, traffic distribution is restricted to 8 members only.

This is an expected behavior for firmware versions before v7.2.11, v7.4.8, and v7.6.3.

Sample Config:

config system sdwan
    config service
        edit 1
            set mode load-balance
            set hash-mode source-ip-based
            set dst "all"
            set src "all" 
                config sla
                    edit "test"
                        set id 1
                    next
                end
            set priority-members 1 2 3 4 5 6 7 8 9 10 11 12 13 14
        next
    end
end

Starting from v7.2.11, v7.4.8, v7.6.3, traffic can be load-balanced across up to 16 SD-WAN members in load-balance mode.

Note:

Starting from v7.4.1 and v7.6.0, the command 'set mode load-balance' is replaced with a new command 'set load-balance enable' to achieve similar functionality.