Cabletron Systems EMM-E6 - Manual (Page 54)

Alarm Configuration
3-4 Setting Repeater Alarms
Alignment If this check box is selected, all misaligned packets will
be included in calculating the overall percentage of
errors. A misaligned packet is one with an non-integral
number of bytes; these are also sometimes referred to as
framing errors.
Runts If this check box is selected, the number of runt packets
will be included in calculating the overall percentage of
errors. A runt packet is one that is less than the minimum
Ethernet frame size of 64 bytes.
Giants If this check box is selected, the number of giant packets
will be included in calculating the overall percentage of
errors. A giant packet exceeds the maximum Ethernet
frame size of 1518 bytes (excluding the preamble).
OOW Collisions If this check box is selected, all collisions out of the
standard collision window (51.2
µ
s) will be included in
calculating the overall percentage of errors. Out-of-
window collisions are typically caused by faulty network
design.
The CARGO description displayed in the alarm type list is an acronym
representing the available error types: C = CRC, A = Alignment, R = Runts,
G = Giants, O = OOW Collisions.This mask will only display the letters
corresponding to the error types you have chosen to include in the overall
percentage of errors.
Broadcast
The broadcasts threshold determines the number of broadcast packets that must
be processed by the repeater, module, or port within the user-defined timebase
before an alarm is reached. Allowable values are 1 to
≈
4 billion.
Setting Repeater Alarms
A repeater alarm is based on the combined conditions of a hub network. You can
set alarms for error levels (for all errors or just specific types of errors), broadcast
packet traffic, data traffic, and collisions.
NOTE
If an alarm type is not supported by your device the alarm configuration options of this
type will be grayed out.