Hoping someone can provide a tip.

So we have a server with multiple Broadcom Fiber nic PCI cards, which take SFPs. RHEL7 of course loads all these interfaces as something like enps0f1, whatver. The software I have to install and get running on this server is dependent on the nics being named "ethx". Does anyone know of an easy way to determine, that a specific port on a card is enps0xxxxx, so that I can then use the bus id in a udev rule to rename that interface as ethx?

When we were working with copper nics, it was easy to just use ethtool --identify "nic name" and it would blink. Apparently ethtool won't make these kind of nics blink.

Thanking you in advance....

Many distros have udev configured to use predictable network interface naming as described here. If you require (or prefer) traditional naming, you can specify 'net.ifnames=0' kernel boot parameter (in grub).

References...
https://wiki.archlinux.org/index.php...nterface_names
https://wiki.archlinux.org/index.php...interface_name

Another method that can be used is to light up an optical interface (eg via another SFP and patch cable), then use 'ethtool' or even 'ip link' to check the status of a given port.

This will watch dynamically for example....