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Loosing external network connectivity

Fred d.B.

Hello,

Every morning, i must connect on my UTM WebAdmin and click the renew button of my external adapter to be able to connect on the internet.

I thought that my problem was related to the UTM value 576 that was always assigned to my NIC (plugged in a cable modem). After having reported my problem here in the forum, i was able to change definitively the UTM value to 1400 (thank you again for the help).

https://community.sophos.com/products/unified-threat-management/f/hardware-installation-up2date-licensing/92836/configuring-mtu-network-interface-for-internet-provider-via-cable-modem/336286#336286

Unfortunately, this didn't fix my problem and i still continue to lose the connectivity. I do not find any information in the log file neither.

My UTM is installed under a VMWare ESXi 6.5.

Any help is very welcome :)

 

Thank you,

Cheers,

Fred



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  • 0

    Hi Fred,

    The first thing to try is changing to VMXNET3 NICs if you're not already using them.  After that, I would try #7.7 in Rulz.  Any luck with either of those?

    Cheers - Bob

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
  • 0 in reply to BAlfson

    Hi Bob,

     

    I've changed my UTM value from 1400 to 1496. It's already 2 days and 13 hours of uptime and my link is still UP!

    I don't know if this change did the trick but i have never had a so long link up time.

    I did set up also the uplink monitoring + balancing on a second spare NIC.  

    Rule #7.7 is indeed interesting, i'll check that!

     

    I'll keep you inform and give you a feedback in 2-3 days.

     

    Thank you,

    Fred

  • 0 in reply to Fred d.B.

    Hi, 

    It's been more than five days now and my link is still UP (no balancing neither).

    All seems to be very stable now.

    This is a good thing, i can continue to go deeper in the configuration of my UTM.

     

    Bob, thank you also for your feedback and suggestions.

    Greetz,

    Fred

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