Modular Arrangement Design
A campus arrangement can be advised in a analytic manner, application a modular approach. In this
approach, anniversary band of the hierarchical arrangement archetypal can be burst bottomward into basic
functional units. These units, or modules, can again be sized appropriately and connected
together, while acceptance for approaching scalability and expansion.
Campus networks can be disconnected into the afterward basal elements:
• About-face block
• Amount block
Other accompanying elements can exist. Although these elements don’t accord to the overall
function of the campus network, they can be advised alone and added to the network
design. These elements are
• Server block
• WAN block
• Mainframe block
Figure 2-7 shows the basal anatomy of a modular campus design. Apprehension how anniversary of the
building block elements can be bedfast to a assertive breadth or function. Also apprehension how anniversary is
connected into the amount block.
40 Chapter 2: Campus Arrangement Architecture Models
Figure 2-7 Modular Admission to Campus Arrangement Design
The About-face Block
Recall how a campus arrangement is disconnected into access, distribution, and amount layers. Basically, the
switch block contains switching accessories from the admission and administration layers. All switch
blocks again affix into the amount block, accouterment end-to-end connectivity beyond the campus.
Switch blocks accommodate a counterbalanced mix of Band 2 and Band 3 functionality, as ability be present
in the admission and administration layers. Band 2 switches amid in base closets (access layer)
connect end users to the campus network. With one end user per about-face port, anniversary user receives
dedicated bandwidth access.
Building
Building A ...
Core
block
Server
block
Mainframe
block
WAN
block