14 July 2004
Including changes 12 April 2005
GENERAL CONDITIONS NEW CONSTRUCTION
GENERAL. Quantity, size and location of NMCI infrastructure
facilities are influenced by many factors. Required capabilities, quality of service,
technical limitations, standards and codes are a few of the factors that impact the
design and configuration of the required infrastructure. New construction covered
by this chapter is defined as construction for the benefit of DoN, including new
facilities, additions, or major renovations.
Overview. The NMCI unclassified design on any given base is a
hierarchical, three layered architecture as indicated in Figure 2-1. The layers
Core connection to the outside world
Distribution building connection to base "outside plant"
Access drops to the individual seats
Connections between layers are fiber optic (Gigabit Ethernet). The
connections between the access layer and the individual seats are Category 5e
(Fast Ethernet) cable to support Fast Ethernet protocol. The terms used
throughout this document follow ANSI / EIA / TIA standards to the greatest extent
possible. Realizing that even the industry standards have inconsistencies as
they progress through the differing update cycles, the most recent version of
ANSI / EIA / TIA 568 B.1 has been chosen as the basis. When the terminology
differs from this standard, the specific usage and interpretation of the terminology
is described within the text and in Appendix B.
CORE LAYER. The Equipment Room (ER) that houses the NMCI
network entrance facility (EF) is associated with the NMCI core layer and is
called the NMCI Point of Presence (POP).
Definition. Every base with NMCI presence will have a POP (a
base with a regional server farm will have the EF and other functions normally
included in the POP, as described below, contained within the regional server
farm.) A POP will be deployed within NMCI wherever the network is not
physically controlled within a DoN environment. For example, at MCAS Miramar
connectivity between the two sides is primarily provided through PacBell central
offices located off-site. Two NMCI POPs would be deployed to support this
base: one aboard main-side, and the other located aboard East Miramar.