Solutions to Scenario 114 Part BConfiguration

Example 11-1, Example 11-2, and Example 11-3 show the configurations for Scenario 11-4, Part B, given the criteria.

Example 11-1 Scenario 11-4 Router A Configuration interface e0

ip address 131.99.0.49 255.255.255.240 ! 4 bits allows 14 hosts interface e1

ip address 131.99.136.129 255.255.255.128 ! 7 bits allows 127 hosts interface e2

ip address 131.99.144.129 255.255.255.128

router ospf 100

network 131.99.0.49 0.0.0.0 area 0

! The wildcard mask 0.0.0.0 places the interface E0 into area 0 network 0.0.0.0 255.255.255.255 area 1

! The wildcard mask 255.255.255.255 places all other interfaces into area 1 area 1 range 131.99.128.0 255.255.240.0

! All addresses from area 1 will be summarized into this one network area 1 stub

! Area 1 is defined as a stub network that will not receive network information ! outside the autonomous system

Example 11-2 Scenario 11-4 Router B Configuration interface e0

ip address 131.99.0.50 255.255.255.240 ! 4 bits allows 14 hosts interface e1

ip address 131.99.192.193 255.255.255.128 ! 7 bits allows 127 hosts interface e2

ip address 131.99.216.193 255.255.255.128

router ospf 100

network 131.99.0.50 0.0.0.0 area 0 network 0.0.0.0 255.255.255.255 area 2 area 2 range 131.99.192.0 255.255.240.0 area 2 stub

Example 11-3 Scenario 11-4 Router C Configuration interface e0

ip address 131.99.0.51 255.255.255.240 ! 4 bits allows 14 hosts interface e1

ip address 131.99.224.225 255.255.255.128 ! 7 bits allows 127 hosts) interface e2

ip address 131.99.232.225 255.255.255.128

router ospf 100

network 131.99.0.51 0.0.0.0 area 0 network 0.0.0.0 255.255.255.255 area 3 area 3 range 131.99.224.0 255.255.240.0

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