Track which facilities have fiber run between them

[mcmanuss8]

1. Inter-building cross connects
2. Campus/Local cross connects - as low cost as 1, presumably as easy to do.
3. Cross connects between two facilities w/o having to run your own WDM gear. Presumably comes at a higher cost/difficulty than the campus style.
4. Dark fiber already exists between these facilities - just bring your own WDM gear.

It'd be great if we could capture all 4 categories and allow people to note that facility A and facility B are connected/connectable via one (or more) of these categories. Some sort of intersection table with a category column and comments to give more details.

One could then use the data to build a list of the facilities you could be in to get to ASN X in $location with increasing difficulty as you went down the list. Filling in the data, however, might be a pain that nobody's willing to do unless there was a good incentive to do so.