Cabletron Systems SEHI-22FL Betriebsanweisung

The following sections describe Device Statistics screen fields:

Displays the number of bytes received.

Displays the number of frames received.

Displays the number of errors received.

Displays the number of collisions received.

Displays the number of Out Of Window collisions. OOW collisions are 
usually caused by the network being too long where the round trip 
propagation delay is greater than 51.2 

µ

s (the collision domain is too 

large), a station somewhere on the network is violating Carrier Sense and 
transmitting at will, or a cable somewhere on the network failed during 
the transmission of the packet.

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.

Displays the number of errors due to misaligned packets.

Displays the number of runt packets received from the network. A runt 
packet is less than the minimum Ethernet frame size of 64 bytes, not 
including preamble.

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

SEHI Book  Page 21  Friday, April 19, 1996  10:46 AM