CMIT 350

Name:_______________________

Using JimSim again again.  
Edit the config files so that no IP addresses are assigned and
the routing protocol is not running.
Edit this file and BOLD your answers.

**Use VLSM (variable-length subnet masking) to subnet a private
class C network.  The serial link needs to be on a "2 host" subnet,
the Eth1 and Eth0 of Router 1 and the Eth0 of Router 2 are on networks
that need up to 30 hosts, the Ethernet between Router 2 and Router 3 
and the Eth0 of Router 3 need up to 62 hosts.


Do not run the routing protocol.
Assign IP addresses to the serial link between routers 1 and 2.
The S0 is the DCE end of (simulated) back-to-back routers so
it needs a clock rate.
Bring up the 5 Ethernets of the diagram below by assigning whatver 
networks and IP addresses you want, subject to the above requirements.
There are many ways the requirements can be met.
Note that unlike the JimSim diagram, Routers 1 and 2 are NOT 
on the same Ethernet, their E0's are on two different LANs.
Do whatever else is necessary so that all routers can ping all the
interfaces of all the other routers.
The simulator is buggy and so EIGRP doesn't seem to work with these
roll-your-own network topology, so static routes will be needed.
Note that the simulator does not support the "outgoing interface"
style of the ip route command, only the "next hop" style.

Write the addresses of the 8 interfaces, using prefix notation:

          ___________________________________________
          |                                         |
         S0                                         S1
      Router1               Router2              Router3
    e1       e0            e0     e1            e1     e0
    |         |             |      |             |      |
 ----         ----       ----      ---------------      ------



Paste the routing tables and the "Interface" and "IP-Address"
columns of the up and up interfaces in the output of 'show ip interface brief' 
of the three routers:
Router 1:




Router 2:




Router 3:


*************************************************************
VLSM exercises.   Use the subnetting diagram.

Show a network addressing scheme that subnets a class C sized network
into six /29 subnets and five /28 subnets and four /27 subnets.
Can this be done without using the "discouraged" zero and broadcast subnets?
What percentage of the class C network is used?


Show a network addressing scheme that subnets a class C sized network
into one /25 subnet, one /26 subnet, one /27 subnet, one /28 subnet,
one /29 subnet and two /30 subnets.


Show a network addressing scheme that subnets a class C sized network
into six /30 subnets, five /29 subnets, four /28 subnets and four /27 subnets.


Show a network addressing scheme that subnets a class C sized network
into six /29 subnets and six /28 subnets and three /27 subnets without
using the "discouraged" zero and broadcast subnets.