4.5 Verify the Link Speed on Network Ports

Ensure you are using the correct link speed for Oracle Exadata Database Machine X7-2 compute nodes.

On Oracle Exadata Database Machine X7-2 compute nodes you might experience issues when connecting to 10GbE switches. These issues include links not being detected or being unable to connect to the gateway.

Resolving 10GbE Network Speed Configuration on Client Network Ports

1. Log in as the root user.
2. Use the cat command to review the /proc/net/bonding/bondeth0 file.
3. For each 10GbE network interface (designated by x) that does not have the link detected, run the following commands:

   # ifdown ethx
   # ethtool -s ethx 10000 duplex full autoneg off
   # ifup ethx
   # ethtool ethx

4. Confirm that the output from the ethtool command shows yes for Link detected.

           Link detected: yes

5. Edit the appropriate files in /etc/sysconfig/network-scripts, where x is the number associated with the network interface.
   1. Locate the /etc/sysconfig/network-scripts/ifcfg-ethx file. Add the following line, if it is not already present in the file:

      ETHTOOL_OPTS="speed 10000 duplex full autoneg off"

   2. Repeat the previous step for all network interfaces that do not have the ETHTOOL_OPTS setting in the associated ifcfg-ethx file and are connected to 10GbE switches.

   The network interface should now show the link as detected. These changes are persistent, and do not need to be repeated after a server reboot.