Using VLAN technology, you can group switch ports and their connected users into
To Branch Offices
Manufacturing Marketing Executives Administration and IT
Accounting Engineering Sales Human Resources
Internet
WAN
16 Chapter 2: Medium-Sized Switched Network Construction
logically de?¬?ned communities, such as coworkers in the same department, a crossfunctional
product team, or diverse user groups sharing the same network application.
A VLAN can exist on a single switch or span multiple switches. VLANs can include stations
in a single building or multiple-building infrastructures. This is illustrated in Figure 2-2.
Figure 2-2 VLANs Can Span Multiple Switches
Grouping Business Functions into VLANs
Each VLAN in a switched network corresponds to an IP network. So VLAN design must
take into consideration the implementation of a hierarchical network-addressing scheme.
Hierarchical network addressing means that IP network numbers are applied to network
segments or VLANs in an orderly fashion that considers the network as a whole. Blocks of
contiguous network addresses are reserved for and con?¬?gured on devices in a speci?¬?c area
of the network.
Pages:
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48