HP Aruba JL253A - Page 182

Condition
triggering
fault finder
Sensitivities Units (in
packets)
Time period Fault finder
reacts:
Over
bandwidth -
High collision
rate -High
drop rate
665 21257 36449 1/10,000
OutgoingOne
Packet
5 mins5 mins If (excessive
collisions/
total) >=
(sensitivity/
10,000)The
count of
dropped
packets >=
sensitivity
during the last
5 minutes.
Broadcast
storm —
Excessive
broadcasts
1475 5000 8525 One
Broadcast
Packet
1 sec If the average
per second of
broadcast
packets in the
last 20
seconds >=
sensitivity
Muticast
storm —
Excessive
multicasts
1475 5000 8525 One Multicast
Packet
1 sec If the average
per second of
multicast
packets in the
last 20
seconds >=
sensitivity
Duplex
mismatch
HDx
6 21 36 1/10,000
Outgoing
20 sec If (late
collisions/
total) >=
(sensitivity/
10,000)
Duplex
mismatch FDx
6 21 36 1/10,000
Incoming
20 sec If (CRC and
alignment
errors/ total)
>= (sensitivity/
10,000)
Link flap —
Excessive
transitions
between link-
up and link-
down states.
4 7 11 One
Transitions
10 secs If the
Transition
count in the
last 10s >=
sensitivity.
Example: of sensitivity calculation:
If a sensitivity is set to High, and a bad cable is causing 15 CRC errors out of a total of 3500 packets transmitted
in a 20 second period:
182 Aruba 2930F / 2930M Management and Configuration Guide
for ArubaOS-Switch 16.08