Posted on behalf of Charles Rose from Enterprise Linux Engineering.

Dell PowerEdge Servers and Precision workstations with recent Linux based distributions support naming network interfaces with meaningful, predictable names (in place of the traditional "eth" names) like em1 and p2p4.

Red Hat Enterprise Linux (RHEL) v6.1 and later support this new naming scheme on 11th and 12th Generation Dell PowerEdge Servers. But to benefit from this new naming scheme a fresh install of the OS would be necessary - the RHEL installer would automatically detect the supported Dell system and use the new naming scheme. Upgrading from an earlier version of RHEL 6 would retain the traditional "eth" naming scheme.

Typical RHEL 6 deployments would use the traditional "eth" names. While users find the new (em1/p1p2) scheme attractive, moving all system configuration from the traditional naming scheme to the new one might appear cumbersome and time consuming. Especially when it involves firewall rules, bonding and bridging configurations.

To help users get started with migrating network device names to the new scheme, we have put together a document with a few guidelines and sample scripts.

While the document is RHEL 6.x centric, the guidelines can be applied to other RHEL and Fedora derivatives as well.