link HP MicroServer Gen8 CentOS 7 Network Speed 100 MBps← Back

I installed CentOS 7 on my HP MicroServer Gen8 and found the network speed was restricted to 100mbps even though I was using Cat5 cable with a gigabit switch. The solution was to disable Network Manager and modify the NIC config file.

First I upgraded the NIC firmware to the latest version. It is generally best practice but wasn't necessary as even after the update the NIC still connected at 100mbps.

Next I went through my etc/sysconfig/network-scripts/ifcfg-eno1 file but there was nothing there specifying network speed.

Finally I decided to disable Network Manager, which I normally do anyway on a server, and reconfigured ifcfg-eno1 with the required settings.

After disabling the NetworkManager service and rebooting the NIC finally connected at 1gbps.

  1. Disable Network Manager
    systemctl stop NetworkManager
    systemctl disable NetworkManager
  2. Next I updated my /etc/sysconfig/network-scripts/ifcfg-eno1 file with the lines highlighted in yellow. Any other lines can be commented out or removed if they don't apply to your network

  3. Once the changes were made, I rebooted the server and checked the NIC speed
    dmesg|grep tg3

Comments

Gravatar

2014-10-16

Unfortunately I can't answer that question.

I installed an Adaptec 6405E RAID PCIe card in mine and connected the factory SATA cable to it which was automatically detected by CentOS 7 and didn't cause anymore trouble after configuring the array through the Adaptec BIOS. I also went into the HP server BIOS and set the B120i RAID back to AHCI SATA and set the Adaptec RAID card as the primary boot device.

Gravatar

Sam

2014-10-16

Hi,
can you explan to me step by step how did install centos on HP microserver gen8 with the driver of HP Dynamic Smart Array B120i. when i put : modprobe.blacklist=ahci inst.dd or blacklist=ahci nothing is run or i didn't see the HP storage.
Can you tell the driver you use, it's ask me the iso file.
Thank you for your response,
Best regards.

Post a comment