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New UTM 9 @ home w/Gigabit fiber running with ESXi - dropping packets to ISP static IP

I have a relatively new UTM 9 Home edition running that is connected up to my new Gigabit fiber connection using PPPoE.  I have an assigned range of static IP addresses the ISP gave me but I see that the main external IP address has tons of dropped packets to the UTM.  This is running on a ESXi with dedicated NICs for the external and internal connections.  I get upwards of 28% dropped packets to the automatically assigned IP address from the ISP through the PPPoE connection.

I'm not running a proxy.

Is there somewhere I can change that so it will run more smoothly?  I am not currently running IPS as it slows down my connection too much.  Speedtest.net right now shows 500-600mbs download and 800-900mbs upload.  When I don't have the UTM connected inline - my old Asus RT-N66u router would get 900-920mbs up and down.  I do have the NAT masquerade rule setup for internal -> WAN.

Daily executive report and weekly reports all show tons of dropped packets to my assigned IP.  I'm sure that's affecting my overall perf and speeds on the UTM and on my gear at home.

Any ideas?



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  • Sounds like a possible CPU issue to me.

    Have a look at your performance stats.

    I've seen this kind of thing before, cpu hits 100% when downloading with PPPoE, and IPS slows things down further as it adds to the CPU load.

    Tim Grantham

    Enterprise Architect & Business owner

  • I realize that PPPoE has overhead - but it doesn't appear to show up in the VM running Sophos UTM v9.  I have looked at real time stats, and daily and weekly stats and the 4x 2.9GHz CPUs assigned to it are really quiet.

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