We're seeing a lot of pause frames being transmitted from our ESXi hosts with 25GbE. Hosts with 10GbE are not transmitting any such frames. We're seeing this issue with both Mellanox and Broadcom and firmware+drivers on both types of nics are within the HCL.
Anyone else seen this issue before?
The values suggested in the kb article you referred wasn't set even though we're on 7.0U1. I then tried to set the values manually, but we still see pause frames being transmitted (~100 per minute):
We're now on U2 and we've found that we're only seeing this issue on hosts with 2x64 core AMD cpu and 25GbE nics. Nic brand doesn't matter as we have hosts with both Mellanox and Broadcom nics and the output is very similar.