Local Area Networks
Because Chapter 10 speaks to small and single sites, multicast applications generally
present no problems or issues since all servers and users are on the same network.
But, as Figure 10.20 shows, single sites often grow to have multiple routers,
as well as remote or mobile users. Still, on a local network, there are issues governing
Quality of Service (QoS) for streaming media that must be addressed.
Please refer to Figure 10.20 for the next discussions.
Here, you still have a local network solution, but you also have a truer representation
of a 50-user single site solution.You now have mobile users on a dialup
in the lower left corner of Figure 10.20, you have the media servers on their own
network for protection and security, and, lastly, this site has its own internet connection.
At the lower center of the figure, you have mobile users on laptops that
come into the office on occasion, but don’t have a designated cubicle.These users
are possibly contractors or guests that need limited access to the network, not to
the main data servers.
The main point to understand is that even with routers in-between the servers
and users, everything is still on the same local site. All major link connections are
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374 Chapter 10 • Designing and Implementing Single Site Solutions
running at 100 Mbps Fast Ethernet, meaning there are no apparent bottlenecks
which might cause a loss of data.