EX3500 Ether

Refer to the Ether-LIKE screen to assess a variety of errors that may be negatively impacting the performance of each listed EX3500 switch interface.

Review the following error conditions for each listed EX3500 switch interface:
  • Interface - Lists the impacted physical EX3500 Ethernet Port reporting the listed interface stats.
  • Alignment Errors - Lists frames received that are not an integral number of bytes long and that fail the FCS check.
  • FCS Errors - Lists each interface's FCS (frame check sequence) errors. refers to the extra error-detecting code added to a frame in a communications protocol.
  • Single Collision Frames - Displays each interface's number of collisions over the selected interface.
  • Multiple Collision Frames - Displays each interface's number of frames transmitted that met with more than one collision before the 64-bytes traversed the connection.
  • SQE Test Errors - Lists each interface's SQE TEST ERROR message. SQEs are Signal Quality Errors, and are also referred as an Ethernet heartbeat.
  • Deferred Transmissions - The number of frames that were ultimately sent after the system initially deferred them (the first transmission attempt was delayed because the medium was busy). This number does not include frames involved in any collisions.
  • Late Collisions - Lists each interface's late collisions. A late collision is any collision that occurs after the first 64 octets of data have been sent. Late collisions are not normal, and usually the result of out of specification cabling or a malfunctioning device.
  • Excessive Collisions - Displays each interface's number of excessive collisions. Excessive collisions occur when the traffic load increases to the point a single Ethernet network cannot handle it efficiently.
  • Internal MAC Transmit Errors - Lists each interface's error count due to to an internal MAC sublayer transmit error. This number does not include alignment, FCS, or frame-too-long errors.
  • Internal MAC Receive Errors - Lists each interface's error count due to an internal MAC sublayer receive error. This number does not include alignment, FCS, or frame-too-long errors.
  • Frames Too Long - Lists each interface's error count due from exceeding the standard Ethernet size limitation but had a valid CRC. Without jumbo frames enabled, these are frames over 1518 bytes or 1522 bytes for VLAN frames. With jumbo frames enabled, these are frames over 9018 bytes or 9022 bytes for VLAN frames.
  • Carrier Sense Errors - Lists each interface's errors that occur when an interface attempts to transmit a frame, but no carrier is detected, and the frame cannot be transmitted.

Periodically select Refresh to update the data to the latest values.

9036512-00 Rev AA