Knowledge Layer :: How Do I Upgrade My Port Speed (Public or Private Network)(Linux)

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The default port speeds for customer servers (both Public and Private networks) is 10mpbs. If you would like to upgrade either of your port speeds to 100mbps or 1000mbps, please open a ticket with our Sales department. Sales will ask you to approve the monthly charge and a techncian will change the port speed limits on the network.

These commands will affect the connectivity of your server. Always manage network connections by first connecting to the IP you are NOT working on.

You can check the current speed of your connection by running the following commands:

# ethtool eth#   (eth1 for public, eth0 for private)

Output will display the current configs for that connection:
root@noc-training-linux [~]# ethtool eth1
Settings for eth1:
        Supported ports: [ MII ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
        Supports auto-negotiation: Yes
        Advertised link modes: 10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
        Advertised auto-negotiation: Yes
        Speed: 100Mb/s
        Duplex: Full
        Port: MII
        PHYAD: 3
        Transceiver: external
        Auto-negotiation: on
        Supports Wake-on: g
        Wake-on: d
        Link detected: yes
root@noc-training-linux [~]#

To change the speed, edit the following file using your favorite text editor:
/etc/sysconfig/network-scripts/ifcfg-eth#   (ifcfg-eth1 for public, ifcfg-eth0 for private)

You will find the following line:

ETHTOOL_OPTS="autoneg off speed 100 duplex full"

This allows the auto-negotiation, speed and duplex to be forced on boot, keeping a consistant configuration through a reboot.
The speed can be modified to match your new port speed. This will require a network reboot before the new speed is used.

SPECIAL NOTE:
All connections forced to 1000mbps must have autoneg enabled in the ifcfg-eth# file.