Cabletron Systems 9G429-02, 9G421-02 appendix Port Statistics Screen Fields

9G421-02/9G429-02 Module Specific Information

Port Statistics Screen Fields

The following information briefly explains each Port Statistics Screen field.

PORT #

Indicates the current port for which statistics are displayed.

OCTETS

Displays the number of octets transmitted and received on the port.

PACKETS

Displays the number of packets transmitted and received on the port.

TOTAL ERRORS

Displays the total number of errors on the port.

COLLISIONS

Displays the total number of collisions detected on this port.

CRC/ALIGNMENT ERRORS

Displays the number of packets with bad Cyclic Redundancy Checks (CRC) that have been received from the network. The CRC is a 4-byte field in the data packet that ensures that the data received is the same as the data that was originally sent. Alignment errors are due to misaligned packets.

UNDERSIZE PACKETS

Displays the number of packets received whose size was less than the minimum Ethernet frame size of 64 bytes, not including preamble.

OVERSIZE PACKETS

Displays the number of packets received whose size exceeded 1518 data bytes, not including preamble.

FRAGMENTS

Displays the total number of packets received that were not an integral number of octets in length or that had a bad Frame Check Sequence (FCS), and were less than 64 octets in length (excluding framing bits but including FCS octets).

JABBERS

Displays the total number of packets received that were longer than 1518 octets (excluding framing bits, but including Frame Check Sequence (FCS) octets), and were not an integral number of octets in length or had a bad Frame Check Sequence.

BROADCASTS

Displays the number of broadcasts received.

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