Thanks FrankVI for your attention to this question. Somehow I can't attach an image in a comment direct to you, so I'm attaching this example of the bandwidth data in an answer.
The bandwidth data looks like this for a sample of nodes A,B and E from the time period of 27/7/2018 12AM to 2AM. Note that I'm selecting these particular nodes as they are in 1 subtree A-B-E, the full set of data will have bandwidth utilization for all nodes at every hour.
Referring back to the tree structure knowledge, let's have some calculation scenarios:
A) utilization for the link that connects A and B at 2AM
- I will sum up bandwidth utilization (aka Throughput) for the subnodes under it, B and E, which amounts to 460+260=720.
B) utilization for the link that connects B and E at 2AM
- Since there is only 1 subnode under this link (E), the utilization for this link is just the utilization for E, which is 260.
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