Lab 6.5.4 EIGRP VLSM

Objective:

Use VLSM and IP unnumbered with the EIGRP routing protocol.

Scenario:

You have been hired by a small school system in York, AL. You are to maximize a full Class C address using IP unnumbered and VLSM. You only have one Class C for this network setup.

From the "Router A" console

  1. Cable the lab as shown above and erase all routers.
  2. To configure the interfaces and turn on the EIGRP routing protocol issue the following commands:
  • router-a(config)#interface fastethernet 0/0
  • router-a(config-if)#ip address 206.202.19.97 255.255.255.224
  • router-a(config-if)#no shutdown
  • router-a(config-if)#interface serial 0/0
  • router-a(config-if)#ip address 206.202.19.89 255.255.255.252
  • router-a(config-if)#no shutdown
  • router-a(config-if)#router eigrp 83
  • router-a(config-router)#network 206.202.19.0
  • router-a(config-router)#no auto-summary
  • router-a(config-router)#^Z

From the "Router B" console

  1. Issue the following commands:
  • router-b(config)#interface fastethernet 0/0
  • router-b(config-if)#ip address 206.202.19.81 255.255.255.248
  • router-b(config-if)#no shutdown
  • router-b(config-if)#interface serial 0/0
  • router-b(config-if)#ip address 206.202.19.93 255.255.255.252
  • router-b(config-if)#clockrate 56000 router-b(config-if)#no shutdown
  • router-b(config-if)#interface serial 0/1
  • router-b(config-if)#ip address 206.202.19.90 255.255.255.252
  • router-b(config-if)#router eigrp 83
  • router-b(config-router)#network 206.202.19.0
  • router-b(config-router)#no auto-summary
  • router-b(config-router)#^Z
  1. Follow the same procedure with different addresses on the other two routers

From the "Router D" console

  1. Enter show ip eigrp topology 206.202.19.0 and show ip route. Report you findings below:

  1. Calculate the number of hosts on each subnet by only using the routing table