This is used to specify the port error information. bit 0 - Single Collision Errors bit 1 - Multiple Collision Errors bit 2 - Late Collision Errors bit 3 - Excessive Collision Errors bit 4 - Mac Rx Errors bit 5 - Mac Tx Errors bit 6 - Defer Tx Errors bit 7 - Packet Errors bit 8 - Link Inactive Errors bit 9 - Unknown Proto Errors bit 10 - In Flwctrl Errors bit 11 - Out Flwctrl Errors bit 12 - Align Errors bit 13 - FCS Errors bit 14 - Frames Long Errors bit 15 - Too Short Errors bit 16 - Link Failure Errors bit 17 - Carrier Sense Errors bit 18 - Carrier Errors bit 19 - SQE Test Errors