Finisar Surveyor - Manual (Page 317)

10-113
Expert Features
MAC Layer
10
Network Overload
Counter
Network Overload is a counter of instances where a threshold for the percentage
change in network utilization is exceeded. Network utilization is compared to the
utilization for the previous time segment. The default threshold is a 40% change in
network utilization. A count of all instances where the threshold is reached displays
in the Overview counters of Expert View.
Expert Symptom
Network Overload events are automatically logged as expert symptoms. The
Symptom Summary field provides information about the change in utilization. For
example:
Utilization=42%
Diagnostic Details
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Problem Description:
The expert utilization threshold has been exceeded for this segment, resulting in a
LAN Overload symptom.
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Probable Cause(s):
1. The network is overloaded.
2. Variations in application traffic patterns.
3. Heavy Internet usage.
4. Too many broadcast/multicast packets.
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Recommended Action(s):
1. Load balance your network.
2. If you see repeated overloads and too many retransmissions, your router or switch may
needed upgrading.