HP Aruba JL253A Management And Configuration Manual page 181

Table 18: Fault finder sensitivities for supported conditions
Condition
triggering
fault finder
Bad driver —
Too many
under-sized
packets or too
many giant
packets
Bad
transceiver —
Excessive
jabbering -
Jabbers:
(Jabbers are
packets
longer than
the MTU) -
Fragments:
(packets
shorter than
they should
be)
Bad cable —
Excessive
CRC/
alignment
errors
Too Long
Cable —
Excessive late
collisions (a
late collision
error occurs
after the first
512 bit times)
Chapter 6 Port Traffic Controls
Sensitivities
High Medium
6 21
65 2110
6 21
6 21
Units (in
packets)
Low
36 1/10,000
Incoming
3614 1/10,000
IncomingOne
Fragments
36 1/10,000
Incoming
36 1/10,000
Outgoing
Time period Fault finder
reacts:
20 secs If (undersized/
total) >=
(sensitivity/
10,000)OrIf
(giant/total) >=
(sensitivity/
10,000)
20 secs20 If (jabbers/
secs total) >=
(sensitivity/
10,000)Or If
fragment
count in the
last 20
seconds >=
sensitivity
20 secs If (CRC and
alignment
errors/ total)
>= (sensitivity/
10,000)
20 secs If (late
collisions/
total) >=
(sensitivity/
10,000)
Table Continued
181