Rate limit is the only function supported by Intel® Ethernet adapter.
When IP-link min_tx_rate command is entered on X540-T2 adapter the command is accepted, but not enforced while using SR-IOV (Single Root- Input\Output Virtualization).
min_tx_rate is not supported by Intel® Ethernet adapter in SR-IOV. The only supported function is rate limit. Refer to the example settings below:
ip link set eth0 vf 0 rate 1000
(This command sets TX Rate Limit of 1000Mbps for VF 0)
For further assistance, contact us via Intel® Ethernet Forum or Customer Support.