intel x710

Making the Intel X710-DA4 Work…

Posted on by dk

Apparently, making this 4x SFP+ card work is not as straight forwards as I thought…

  • LACP (aka Link Aggregation aka 802.3ad) would not work properly under Linux, Windows, VMware or FreeBSD unless a “private flag” was disabled using ethtool (source #1, #2)

Sigh, so much for “plug and play pray”…

As per the source/s instructions, I created a /etc/networkd-dispatcher/configuring.d/90-disable-on-chip-LLDP.sh:

#!/bin/sh
if expr "$IFACE" : <interface prefix> >/dev/null; then /sbin/ethtool --set-priv-flags "$IFACE" disable-fw-lldp on fi

WARNING: Make sure your <interface prefix> is able to only address the X710 interfaces, or you will likely get errors or, worse, brick your NIC. As an example, my X710 interfaces are all named enp1s0fN so I use the <interface prefix> of “enp1s0f”

To check, simply give the command ethtool --show-priv-flags <interface prefix>.