Technical Tip: How to fix high latency and packet loss for Telstra satellite WAN connection in SD-WAN setup

High latency and packet loss over Satellite WAN connection under the performance SLA of SD-WAN will lead to link-down issues.

Since the satellite link latency is very large, it is necessary to modify the interval(default 500ms), probe-timeout(default 500ms), and SLA of health-check as follows:

config health-check
    edit "SLA_Profile_ID"
        set server <server1_IP_address>
        set interval 1600
        set probe-timeout 1600
        set members 0
            config sla
                edit 1
                    set latency-threshold 1000
                    set jitter-threshold 800
                    set packetloss-threshold 5
                next
            end
    next
end

Note: This is also applicable for Starlink as an SD-WAN member.