Unable to change NIC settings with ethtool

Hi all,

I'm trying to change my NIC (Intel 10G NIC) settings using ethtool, but can't seem to do that.

I tried

Code:

ethtool -G xge0 rx 32768 tx 32768

and then tried to see if the settings have changed using

Code:

ethtool -g xge0

But I see the output

Code:

Ring parameters for xge0: Pre-set maximums: RX: 4096 RX Mini: 0 RX Jumbo: 0 TX: 4096 Current hardware settings: RX: 4096 RX Mini: 0 RX Jumbo: 0 TX: 4096

Why can't I change the settings?

Thank you.

Regards,
Rayne