I have Wireshark installed on a Dell D620 with a Broadcom NetXtreme 57xx NIC. I have port mirroring configured on my LAN switch, however, Wireshark captures no packets when I connect to the mirrored port. I can connect another PC with Wireshark to the same mirrored port and I see tons of packets. It appears to me that my Broadcom NIC is not being placed in promiscuous mode but I have no idea how to fix that. Any help would be greatly appreciated.