Due to circumstances, the normal 1G interface cannot be used as the management interface for a NetWitness server. Instead, a 10G interface must be used for all management functions.
Warning: Only one interface can be enabled as the management interface. The steps within this article have to be performed at the time of server build to work correctly. All interfaces must be completely disabled except for the 10G interface that will be used as the management interface. If all interfaces, except the 10G management interface, are not disabled during the build process, the build process/bootstrapping will fail.
Note: On the series 5 and 6 servers the interface numbering provided by CentOS starts em1 at the first 1G interface and not the first port on the back of the server. The first two ports are the 10G ports while the last two are the 1G ports. So the physical ports are arranged this way left to right: Port 1 - 10G (em3), Port 2 - 10G (em4), Port 3 - 1G (em1), Port 4 - 1G (em2).
Setup and confirm that the 10G interface that will be used as the management interface is active.
# vi /etc/sysconfig/network-scripts/ifcfg-em3
# ifup em3
Make sure that all other interfaces are disabled (em1, em2, em4) by adjusting the network configuration files under /etc/sysconfig/network-scripts
# vi /etc/sysconfig/network-scripts/ifcfg-em1
Once all the network configuration files are modified restart the network service.
# systemctl restart network
Continue with the orchestration of the server. However when selecting the management interface make sure to select the now active 10G interface (em3).