OPNsense Forum

English Forums => Hardware and Performance => Topic started by: MikeArcade on June 30, 2021, 04:00:56 pm

Title: Vmware Path through Network Cards Hardware CRC TSO LRO Question
Post by: MikeArcade on June 30, 2021, 04:00:56 pm

Hello Community,

am i right that if i have a Vmware ESXI (6.7) with path through network cards Broadcom 5709 and Intel Pro 1000 Cards do have Hardware CRC TSO and LRO?

Broadcom says they have some offload function in the specs and Intel too..

I accidentally had this always on but no i wanna dig a little bit into.. No problems over the last 4 or 5 years but i wanna get sure and ask ;)

Many thanks in advance!

Title: Re: Vmware Path through Network Cards Hardware CRC TSO LRO Question
Post by: opnfwb on July 01, 2021, 03:25:22 pm

TSO and LRO are actually not recommended for a router. They an interfere with the packet forwarding work that OPNsense is already trying to do.

Checksum offload may have a small benefit. I've personally never been able to measure the difference. By default, OPNsense has all of these disabled on a fresh install.

Title: Re: Vmware Path through Network Cards Hardware CRC TSO LRO Question
Post by: MikeArcade on July 04, 2021, 07:19:02 pm

thx for the answer, i'll turn them off ;)