I have been reporting WAN Availability based on the Availability column in the ResponseTime tables. Since the availability reporting was completed, I discovered that a new set of tables for Interface Availability were added with the last upgrade. Having compiled the necessary logic to tie Interface Availability to each interface, a trend has emerged.
When I compare the Node Availability to the corresponding WAN Interface Availability, the Interface Availability is almost always higher than the Node Availability.
QUESTION: If the Node is unavailable, wouldn't it stand to reason that the WAN Interface is also unavailable and therefore Interface Availability should always be <= to the Node Availability? Can it be that if the node is unavailable the interface availability is simply unreported. If so, I don't think this number can be trusted.
