case study #3:

Assume you are the proud owner of a brand-new Cisco 7513 router
(one big honking son of a gun).  You are the network engineer for 
WoodSplinter Inc., a company with many branch offices in Oregon
(say 5) including Portland/Bend/Pendleton/Corvallis/Ashland.
The router will be cited in the head office in Hillsboro.  Essentially
your router must have 6 network connections, 1 local ethernet, and
5 wan T1 (or maybe bigger).  You have a grand total of one class C
address (210.1.2.0) and 6 networks.  You don't actually have to
worry about the branch networks at the other offices, but you do
have to provide a reasonable setup for N hosts (say 32) at your
home office where the ethernet connection will live.  You must also
design a network scheme that includes all the WAN connections, including
addresses for the routers at the branch offices.  What is your proposed
network design?  Show ip addresses and net masks for i/fs.
Note there is an Internet connection in the big router, but
its addressing is not your concern (taken care of already).

Picture:

	home office 7513

	|------------- local 100BASE ethernet (#3), must have 32 hosts
	|
	---------------------------------
        |          big router            |---->  to Inet
	---------------------------------  (#2)
	|	|	|	|	|
        -       -       -       -       -    R1, R2, R3, R4, R5  (#1)

1. 
You must assign ip address/masks for
	R1, R2, R3, R4, R5 side T1 interfaces.

2.
You must assign an ip address/mask for BR (big router) T1 interfaces too.

3. 
You must assign addressing for the internel ethernet subnet in the home
	office.