2nd index of the ifPerfTable. This parameter represents the Counter Type. Each application can have a different association between this object's value and counter type - see relevant application spec. For ETH use the following values: Value Counter 1 Tx 64 (bytes) 2 Tx 65-127 (bytes) 3 Tx 128-255 (bytes) 4 Tx 256-511 (bytes) 5 Tx 512-1023 (bytes) 6 Tx 1024-Max (bytes) 7 Tx 1024-1518 (bytes) 8 Tx Correct Frames 9 Tx Error Frames 10 Tx Discard Frames 11 Total Collisions 12 Tx Unicast Frames 13 Tx Broadcast Frames 14 Tx Multicast Frames 15 Rx Correct Bytes/Octets 16 Single Collision Frames 17 Multiple Collision Frames 18 Deferred Transmission Frames 19 Late Collision Frames 21 Rx Correct Frames 22 FCS Errors Frames 23 Rx Jabber 24 Rx Fragments Frames 25 Rx Undersize Frames 26 Rx Oversize Frames 27 Rx Discard Frames 28 Rx Unicast Frames 29 Rx Broadcast Frames 30 Rx Multicast Frames 31 Rx 1519-2047 (bytes) 32 Rx 2048-Max (bytes) 40 Tx 1519-2047 (bytes) 41 Tx 2048-Max (bytes) 42 Tx Oversize Frames 43 Rx Frame Too Short 44 Rx Error Frames 45 CRC Error Frames 46 Rx L2CP Discarded 47 Rx OAM Discarded 48 Rx Unknown Protocol Discarded 49 Dropped Frames 50 Tx Correct Bytes/Octets 51 Rx Overflow 52 Tx Fragments Frames For some applications (not ETH) the following values are used: 1= Rx Octets, 2= Tx Octets, 3= Rx Frames, 4= Tx Frames, 5=Rx Dropped Frames, 6= Tx Dropped Frames. Optionally, counter type description appears in agnListDecodingTable