BLOCK CHECK ERRORS

         Number of times a received frame containing an integral number of
         octets failed the FCS check.

     DIRECTED BEACONS RECEIVED

         Number of times the link detected the directed beacon process.

     DUPLICATE ADDRESS TEST FAILURES

         Number of times the duplicate address test failed detected that the
         link address was a duplicate.

     DUPLICATE TOKENS DETECTED

         Number of times the MAC address test failed detected that the link
         address was a duplicate.

     ERROR COUNT

         Total number of frames that were in error with the E indicator
         reset, indicating that the error occurred between the upstream
         MAC and this one.

     FCI STRIP ERRORS

         Number of times a frame content independent strip operation bridge
         strip was terminated by receipt of a token.

     FRAME COUNT

         Total number of frames seen by this link, other than tokens.

     FRAME STATUS ERRORS

         Number of times a received frame had the E indicator in error
         missing or set and the FCS was correct.

     LOST COUNT

         Counter lost count.

     MULTICAST OCTETS RECEIVED

         Number of multicast data octets that were successfully received in
         multicast frames of type LLC, implementer, reserved, or SMT. The
         count does not include the MAC envelope.

     MULTICAST OCTETS SENT

         Number of multicast data octets that were successfully sent in
         multicast frames ot type LLC, implementer, reserved, or SMT.
         The count does not include the MAC envelope.

     MULTICAST PDUS RECEIVED

         Number of multicast frames that were successfully received of type
         LLC, implementer, reserved, or SMT.

     MULTICAST PDUS SENT

         Number of multicast frames that were successfully sent of type LLC,
         implementer, reserved, or SMT.

     OCTETS RECEIVED

         Number of octets successfully received in frames of type LLC,
         implementer, reserved, or SMT.  The count does not include the MAC
         envelope.

     OCTETS SENT

         Number of octets successfully sent in frames of type LLC,
         implementer, reserved, or SMT.  The count does not include the MAC
         envelope.

     PDU LENGTH ERRORS

         Number of times a received frame had an invalid length, either too
         long or short for the type, or had an alignment error odd number of
         symbols.

     PDUS RECEIVED

         Number of frames successfully received in frames of type LLC,
         implementer, reserved, or SMT.

     PDUS SENT

         Number of frames successfully sent in frames of type LLC,
         implementer, reserved, or SMT.

     RECEIVE DATA OVERRUNS

         Number of times the hardware lost one or more consecutive, only
         partially complete incoming frames because it was unable to keep up
         with the medium rate.  An example is overrun of a bit or octet FIFO
         queue because of inability to copy data from adapter to host
         promptly.  In conjunction with total frames received, provides a
         measure of hardware resource and bandwidth failures.

     RING BEACONS INITIATED

         Number of times the ring beacon process was initiated by this link.

     RING INITIALIZATIONS INITIATED

         Number of times a ring reinitialization was initiated by this link.

     RING INITIALIZATIONS RECEIVED

         Number of times a ring reinitialization was initiated by some other
         link.

     RING PURGE ERRORS

         Number of times the ring purger received a token while still in the
         ring purge state.

     TOKEN COUNT

         Number of times a token has been seen by this link.

     TRACES INITIATED

         Number of times the pc_trace process was initiated by this link.

     TRANSMIT FAILURES

         Number of times a transmit error, other than underrun, occurred.
         This does not include errors in transmitting MAC type frames.

     TRANSMIT UNDERRUNS

         Number of times a transmit underrun occurred.  This indicates the
         transmit FIFO became empty during frame transmission.

     UNAVAILABLE LINK BUFFERS

         Number of times a complete, fully received frame was discarded
         because no link buffer was available.  In conjunction with total
         frames received, provides a measure of station-buffer-related
         receive problems.

     UNAVAILABLE USER BUFFERS

         Number of times no user buffer was available for an incoming frame
         that passed all filtering for the port.  These are the buffers
         supplied by users on receive requests.  In conjunction with total
         frames received, provides a measure of user-buffer-related receive
         problems.

     UNRECOGNIZED INDIVIDUAL DESTINATION PDUS

         Number of times a received LLC frame with an individual destination
         MAC address was discarded because there was no port with the
         Ethernet protocol type, SNAP protocol identifier, or LLC SAP
         address enabled.  Only frames containing individual destination MAC
         addresses are counted.

     UNRECOGNIZED MULTICAST DESTINATION PDUS

         Number of times a received LLC frame with a multicast destination
         MAC address was discarded because there was no port with the
         Ethernet protocol type, SNAP protocol identifier, or LLC SAP
         address enabled.  Only frames containing multicast destination
         MAC addresses are counted.