Rockwell Automation 1783-EMS08T Stratix 6000 Ethernet Managed Switch User Manual - Manual (Page 51)

Rockwell Automation Publication 1783-UM001D-EN-P - January 2013 51
Diagnostics Chapter 3
Counters are displayed in hex where an octet equals 8 bits. Table 5 lists Transmit
(Tx) counters.
Table 5 - Tx Counters
Counter Description
Tx Octet Count Total of transmitted good octets from the selected port.
Tx Drop Pkts Count Packet is not acknowledged by the receiving host.
Tx BroadcastPkts Count Number of good packets sent with destination of
everyone. Receivers are unspecified.
Tx MulticastPkts Count Packets sent to members of multicast group. One terminal
to many hosts.
Tx UnicastPkts Count In contrast with multicast, consists of one terminal
transmitting to one host.
Tx Collisions Count Two terminals transmit packets at the same time causing
them to collide. Collision Count should be very low.
Collisions could indicate a faulty device on the network.
Tx SingleCollision Count Packet collides with one other terminal’s transmitted
packet.
Tx MultipleCollision Count Packet collides with more than one terminal’s transmitted
packets.
Tx DeferredTransmit Count Number of packets delayed because the network is busy.
The higher the number, the less deterministic your
network.
Tx LateCollision Count Collision is detected later than the 512 bits into the packet
transmission.
Tx ExcessiveCollision Count Network device is not acting in compliance with a flow
control request.
Tx PausePkts Count Pause frames sent by this port.