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The WAN report health rules are configurable (section opreport_rules) and the report type supports customisable detail levels for the display.
Formula used for Calculation
Maximum and Average input and output utilisation is calculated for the interface. The larger of maximum and average input and output utilisation is used in formula.
Link Availability = Condition: "Router has LOW interface availability"
Action: Investigate carrier for interface problems
Interface availability less than 99.9%
Link Availability = Condition: "Router has VERY LOW interface availability"
Action: Investigate carrier for interface problems
Interface availability less than 95%
Over-utilised Links = Condition: "WAN link has VERY HIGH utilisation"
Action: Investigate WAN Upgrade Urgently
Average link utilisation is above 80% average utilisation
Over-utilised Links = Condition: "WAN link has HIGH utilisation"
Action: Investigate WAN Upgrade
Average link utilisation is above 65% average utilisation
Links Considered Normal = Condition: "WAN link has acceptable utilisation"
Action: WAN utilisation is OK
Average link utilisation is less than 65%
Input and/or Output Errors = Condition: "WAN link has input/output errors"
Action: Investigate cause of interface errors, likely transmission
Error rates higher than 1% of input or output packets
Forumulas used for Calculations as well as more information can be found here: WAN Report
Input and/or Output Discards = Condition: "WAN link has input/output discards"
Action: Investigate cause of interface discards, likely related to QoS or buffer overruns.
Discard rates higher than 1% of input or output packets
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QoS Report
The QoS report is intended to provide an overview of the Qality of Service configuration and utilisation of the selected nodes.
Rules
To assist in the assimilation of the data, a few simple rules have been applied to the statistics to assist with highlighting some possible problem areas.
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