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unable to get max link speed

Hi there,

I have been a Astaro / Sophos UTM user since V6 and it has served me well over the years but recently I ran into a problem that I can't yet solve. Some tips would be most welcome!

I have recently changed ISP's and the new ISP is a 80Mbps down/20Mbps up provider that requires PPPoE connection.

To trial this out at first I connected my laptop directly onto the model and setup a PPPoE connection which worked perfectly fine and I managed to get full 80Mbps down and 20Mbps up.

When connecting a dedicated Astaro / Sophos device, I now only seem to manage 50Mbps and 18Mbps down, with the same settings (MTU is correctly set at 1492).

In order to test I have turned off every single feature I could turn off, effectively making the UTM a router. Still it seems to be capped at 48~ Mbps.

has anyone seen this before? And where to start looking for a possible cause?


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  • Hi Ian,

    So the hardware is a dual core 2.4Ghz AMD CPU with 4Gb of memory, which should have ample capacity without any features turned on. This is dedicated hardware and not a virtualised environment. 

    The NIC connected to the LAN:
    eth0 NVIDIA Corporation MCP77 Ethernet
    Slot: n/a
    Auto negotiation: On
    Supported link modes: 10baseT/Full,10baseT/Half,100baseT/Full,100baseT/Half,1000baseT/Full
    Interrupt (IRQ): 22
    PCI Device ID: 0x760:0x82f2
    MII capable: Yes
    HA link monitoring: Yes


    and the NIC connected to the wan:
    eth1 Intel Corporation 82541PI Gigabit Ethernet Controller
    Slot: n/a
    Auto negotiation: On
    Supported link modes: 10baseT/Full,10baseT/Half,100baseT/Full,100baseT/Half,1000baseT/Full
    Interrupt (IRQ): 17
    PCI Device ID: 0x107c:0x1376
    MII capable: No
    HA link monitoring: Yes
  • Hi Ian,

    So the hardware is a dual core 2.4Ghz AMD CPU with 4Gb of memory, which should have ample capacity without any features turned on. This is dedicated hardware and not a virtualised environment. 

    The NIC connected to the LAN:
    eth0 NVIDIA Corporation MCP77 Ethernet
    Slot: n/a
    Auto negotiation: On
    Supported link modes: 10baseT/Full,10baseT/Half,100baseT/Full,100baseT/Half,1000baseT/Full
    Interrupt (IRQ): 22
    PCI Device ID: 0x760:0x82f2
    MII capable: Yes
    HA link monitoring: Yes


    and the NIC connected to the wan:
    eth1 Intel Corporation 82541PI Gigabit Ethernet Controller
    Slot: n/a
    Auto negotiation: On
    Supported link modes: 10baseT/Full,10baseT/Half,100baseT/Full,100baseT/Half,1000baseT/Full
    Interrupt (IRQ): 17
    PCI Device ID: 0x107c:0x1376
    MII capable: No
    HA link monitoring: Yes


    If this amd cpu is more than 3 years old your hardware isn't up to snuff.  you will need a new faster cpu at least.

    Owner:  Emmanuel Technology Consulting

    http://etc-md.com

    Former Sophos SG(Astaro) advocate/researcher/Silver Partner

    PfSense w/Suricata, ntopng, 

    Other addons to follow

Reply
  • Hi Ian,

    So the hardware is a dual core 2.4Ghz AMD CPU with 4Gb of memory, which should have ample capacity without any features turned on. This is dedicated hardware and not a virtualised environment. 

    The NIC connected to the LAN:
    eth0 NVIDIA Corporation MCP77 Ethernet
    Slot: n/a
    Auto negotiation: On
    Supported link modes: 10baseT/Full,10baseT/Half,100baseT/Full,100baseT/Half,1000baseT/Full
    Interrupt (IRQ): 22
    PCI Device ID: 0x760:0x82f2
    MII capable: Yes
    HA link monitoring: Yes


    and the NIC connected to the wan:
    eth1 Intel Corporation 82541PI Gigabit Ethernet Controller
    Slot: n/a
    Auto negotiation: On
    Supported link modes: 10baseT/Full,10baseT/Half,100baseT/Full,100baseT/Half,1000baseT/Full
    Interrupt (IRQ): 17
    PCI Device ID: 0x107c:0x1376
    MII capable: No
    HA link monitoring: Yes


    If this amd cpu is more than 3 years old your hardware isn't up to snuff.  you will need a new faster cpu at least.

    Owner:  Emmanuel Technology Consulting

    http://etc-md.com

    Former Sophos SG(Astaro) advocate/researcher/Silver Partner

    PfSense w/Suricata, ntopng, 

    Other addons to follow

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