Another thread about low bandwidth with VMware ESXi

whosmatt

I'm running this script on pfSense and configuring vlan on it too.

Ok, i'm a dummy. Long ago, I set a very strong pw for admin/root on pfSense and never use that account. I created a separate admin account with a not-easily-guessed user name for day-to-day admin. I used that account at the CLI to run ifconfig, which failed. Long story short, admin access in the gui =! root @ cli. Running as the actual root account lets me set MTU.

marcelloc

Yes, it needs root.
Check if any pfSense routine will back it to 1496. If so, add that script changing parent interfaces to your setup on cron.

whosmatt

I don't know.. I've experimented with MTU as far as up to 9000 on the virtual NIC and the VMware switch and have seen throughput up to about 150Mbps but it's wildly inconsistent.

I really got into this thread because I found the original post interesting and was able to replicate a similar issue in my personal (home) setup. It is not, in fact, a real problem for me as I do so little inter-vlan routing on my home network that it doesn't affect me one way or the other.

One thing I can verify is that my shaper config limits inter-vlan traffic; disabling the root queue on the DMZ interface allows much faster throughput during a sustained NFS -> local storage transfer on a DMZ machine from a NFS mount in LAN. But that's for a different forum.