2.5GBE Ethernet issue

[onedelve]

Im running a ProxMox box using a 2.5GiB ethernet adapter....However, the VM's are only showing 1GB uplink in Windows Powershell using the get-netadapter * command

ethtool readout:

root@proxmox:~# ethtool enx00242788a45a
Settings for enx00242788a45a:
        Supported ports: [ TP    MII ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Half 1000baseT/Full
                                2500baseT/Full
        Supported pause frame use: No
        Supports auto-negotiation: Yes
        Supported FEC modes: Not reported
        Advertised link modes:  10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
                                2500baseT/Full
        Advertised pause frame use: No
        Advertised auto-negotiation: Yes
        Advertised FEC modes: Not reported
        Link partner advertised link modes:  10baseT/Full
                                             100baseT/Full
                                             1000baseT/Full
                                             2500baseT/Full
        Link partner advertised pause frame use: No
        Link partner advertised auto-negotiation: Yes
        Link partner advertised FEC modes: Not reported
        Speed: 2500Mb/s
        Duplex: Full
        Auto-negotiation: on
        Port: MII
        PHYAD: 32
        Transceiver: internal
        Supports Wake-on: pumbg
        Wake-on: g
        Current message level: 0x00007fff (32767)
                               drv probe link timer ifdown ifup rx_err tx_err tx_queued intr tx_done rx_status pktdata hw wol
        Link detected: yes

Hardware that is set in the VM:

Poiwershell in Windows VM:

ANY AND ALL HELP IS GREATLY APPRECIATED!.

 

[meyergru]

There is no issue at all. You use an emulated network adapter in your Windows VM that is bridged over vmbr1 to the physical adpater of your PVE server, The speed indicated in your emulated adapter is determined by the characteristics of the driver, which probably cannot do anything more than 1 Gbps and it probably stays there regardless of what the physical connection really does. Either way, the indicated speed does not have anything to do with the real speed of the physical bridged NIC.

You could test the real speed with iperf, although it probably is even less than 1 Gbps because of emulation.