Cabletron Systems 9E428-36 User Manual

Page of 18
11
9E428-12/36 and 9E429-12/36 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.
PACKETS 
Displays the number of packets transmitted and received.
TOTAL ERRORS 
Displays the total number of errors on this 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 transmitted data that is 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.