Multicampus link environment
Planning for a multicampus link environment typically involves the same considerations as the other three environments and includes additional considerations. Multicampus links usually require single mode trunk cable because 1) the distance between buildings is greater than 3 kilometers (1.86 miles), and 2) the connections between buildings are outside the user's control, thereby requiring access to a right-of-way. Negotiation for using a right-of-way, however, can greatly extend the time required to plan a multicampus link and must be considered.
- Leasing of dark fiber
Most telecommunication facilities are terminated by data communications equipment (DCE) and have repeaters, conditioning, or exchanges within the link. A "dark" fiber has no active components either in the link or at the termination points.
- Increased number of connections
When private contractors, common carrier companies, or governmental agencies install fiber cables across public right-of-ways, they sometimes connect the fibers to a building interface panel. This adds to the link loss because it induces additional connections.
- Common carrier regulatory constraints
- Governmental regulatory constraints
- Tariff zones
- Reliability, availability, and serviceability factors
Figure 1 conceptually shows a multicampus environment. Notice that the figure does not indicate building boundaries. This is because a multicampus environment could be distributed over a wide geographical area and each building could have an unequal amount of data processing equipment. Contact your IBM® marketing representative.
