INE3010 Pre Lab 1: OSPF

Objective

    - setup Cisco router and Zebra routing daemon on PC
    - getting familiar on operating OSPF with configure such as multiple
      areas, external routes and default routes

Reference Materials

    - OSPF Design Guide
    - IOS Configuring OSPF
    - Zebra docs

Setup

    - equipment: Catalyst 2950 switch, Cisco 1721 router, 3 VMs (VM1, VM2 & VM5)

                    Lo0 192.168.3.1/24
                           |
  Area 51               +--+--+             Area 0
           fa0.32 224.1 |C1721| fa0.31 1.3 
  eth0              ----+-----+--------     
  192.168.224.2/30 /                   \ eth0 192.168.1.1/24
             +-----+                    +-----+
             | VM2 |                    | VM5 |--lo:0 192.168.64.1/30
             +--+--+                    +--+--+  lo:1 192.168.80.1/30
                |                          | 10.0.0.0/24
              --+--                     +--+--+
            lo:0 192.168.240.1/30       | VM1 |
            lo:1 192.168.244.1/24       +-----+


Steps

1. Setup 3 OSPF router on Cisco, VM2 and VM5. On each router, advertise
   the networks into OSPF include loopbacks. Loopback network for VM
   can be created by using the alias network of lo (loopback). e.g.

    ifconfig lo:0 192.168.240.1 netmask ...

2. Identify the classification (DR/BDR, BR, ABR, ASBR) and router ID  
   of the OSPF routers by using the command

     show ip ospf
     show ip ospf neighbor [detail]

3. Identify different routes advertised in OSPF

     show ip route
     show ip ospf route (on zebra)
     show ip ospf database

4. Suppose VM1 is a gateway to the subnet 10.0.0.0/16. On VM5, add a static
   route for 10.0.0.0/16

     ip route 10.0.0.0/16 eth1      (syntax for zebra)

   To advertise this static route into OSPF, use the redistribute command in
   OSPF router

     router ospf
       redistribute static

   On Cisco router and VM2, identy the type of this route.
   Check the OSPF status of VM5 OSPF router after the static router is being
   redistributed.

5. Config area 51 as a stub area by using the OSPF router command on both
   Cisco router and VM2

     router ospf
       area 51 stub

   Check the classification of area 51 by the command

     show ip ospf

   Check the route table on VM2 to see the changes.