Hi: Somebody pointed me my clarification on bandwidth calendaring is not very clear when Chair asked me in the meeting what the cost value array stands for in the bandwidth calendaring example slide,
Here I like to emphasize again. the cost value array in the example represent a list of availbandwidth values in the output. Each value is reported at specific measurement interval, The first value in the cost value array will be reported At the "start time" defined in the description metadata of Information resource directory exchange. The duration in the description metadata of Information resource directory exchange represent time difference Between start time to report the first value and end time to report the last value in the cost value array. For example, I as alto client want to know the avail bandwidth values that are applied to specific path from source endpoint to dest endpoint. The avail bandwidth values is measured every 1 hour, the first avail bandwidth is measured at 10:20am, the last measured avail bandwidth Will be measured at 5:20pm, then we list all the avail bandwidth values in the form of cost value array in the output. Also I want to emphasize the clear use cases for alto cost map extension have already been clearly specified in several other working group drafts e.g.,draft-ietf-isis-te-metric-extensions-01, draft-ietf-ospf-te-metric-extensions-01. What alto is doing is abstract these metrics gathered from routing protocol into alto cost metric from one endpoint to another endpoint. Regards! -Qin
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