Cabletron Systems 2E43-51R User Manual
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Chapter 5: Local Management
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2E43-51/2E43-51R User’s Guide
The following definitions explain each field of the Port Statistics screen:
Network # (Read-Only)
Indicates the current Ethernet Segment (ENET 1 through ENET 4) port
for which statistics are displayed. This field is automatically set by
selecting a port number in the PORT # command field at the bottom of the
screen. For example, if 14 is selected in the PORT # command field, the
statistics for Network 2 (ENET 2) displays along with the statistics for the
selected port. If 46 is selected, the statistics for Network 4 (ENET 4) and
port 46 displays.
Port # (Read-Only)
Indicates the current port for which statistics are displayed. The port
number can be changed by using the PORT # command field at the
bottom of the screen. Depending on the port number entered, the
Network # field will automatically change to indicate the associated
ENET. For details on how to use this field, refer to
Bytes Received (Read-only)
Displays the number of bytes received.
Frames Received (Read-only)
Displays the number of frames received.
Total Errors (Read-only)
Displays the total number of errors.
Collisions (Read-only)
Displays the total number of collisions that were detected.
OOW Collisions (Read-only)
Displays the number of Out Of Window (OOW) collision errors detected.
These collisions can be caused by a station on the network violating
Carrier Sense and transmitting at will, a cable failure occurring during the
transmission of a packet, or a network propagation delay greater than
51.2 µs.
CRC Errors (Read-only)
Displays the number of packets with bad Cyclic Redundancy Checks
(CRC) received from the network. The CRC is a 4-byte field in the data
packet that ensures that the data that is received is the same as the data
that was originally sent.