1. VLSM Example Solution Almerindo Graziano

2. VLSM: Interconnection Requirements Interconnection Requirements –In each town the buildings are interconnected via FDDI or Fast Ethernet Each country needs 3 x 4 = 12 addresses (nearest is 32) –Each country has a central site to which all the towns are connected via Frame Relay Each country needs at least 3 addresses –The organization has a central site in Manchester to which all the central sites are connected via Frame Relay/Leased Lines

3. VLSM: Example 143.52.110.0/24 can be subnetted for –Connections between buildings at least 12 per country (Number of buildings may increase) –Serial connections at least 4 per country (backup considerations)

4. VLSM: Example Country: 000143.52.110.0/27Ireland 001143.52.110.32/27Scotland 010 143.52.110.64/27Wales 011 143.52.110.96/27England 100143.52.110.128/27WAN connections 101143.52.110.160/27WAN connections 110143.52.110.192/27WAN connections 111143.52.110.224/27WAN connections 30 addresses for the buildings in each country

5. VLSM: Example WAN connections 111/000143.52.110.224/30Town1 /001143.52.110.228/30Town2 /010143.52.110.232/30Town3 /011143.52.110.236/30Town4 /100143.52.110.240/30to Manchester /101143.52.110.244/30for resiliance /110143.52.110.248/30for resiliance /111143.52.110.252/30for resiliance