Ubuntu guest KVM stuck on Gbit.

Discussion in 'Proxmox VE: Networking and Firewall' started by Kephin, Sep 24, 2015.

  1. Kephin

    Kephin New Member

    Apr 21, 2015
    Likes Received:
    I have running an Ubuntu KVM. It is going to be used as an Asterisk server and therefore has two interfaces so as to route SIP traffic over a seperate interface to a seperate network.
    They both work, but on the second interface i'm troubleshooting a packetloss issue. When looking at the interface with ethtool it reports it has an 1000mbit uplink to the switch.
    The switch it is connected to is in fact 100mbit (dumb/non-managed), so i'm trying to change the duplex setting of said interface on the server end to 100mbit full without autonegotion. (ethtool -s eth1 speed 100 duplex full autoneg off)
    This command indeed turns off the auto negotiation but seemingly does nothing with the Link speed. On the host I use the e1000 option as a network device.
    What could I be missing?


    The host server this KVM runs on did in fact negotiate 100mbit.
    #1 Kephin, Sep 24, 2015
    Last edited: Sep 24, 2015
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