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Addressing at CP HotelsHQ buildings were addressed from the public address block 150.1.0.0 /16.Site Address Block Total Addresses in Block Active Desktop and Access PortsHQ1 150.1.0-31 8192 2500HQ2 150.1.32-63 8192 2500HQ3 150.1.64-95 8192 3000HQ4 150.1.96-111 4096 1000Data Center A uses some addresses from 150.1.240-255. Both data centers use addresses from10.1.0.0 /16 and 172.20.0.0 /16. This scheme reflects different addressing schemes over time,and the difficulty of getting server staff to change addresses on servers. (“Server addresses areforever.”)Partner addresses are public addresses chosen by the partner to avoid any possible addressduplication. They come from multiple blocks per partner.Call Centers use addresses from 180.1.0.0 /16, assigned to allow room for growth.Concerning hotels, each Region of 500 hotels is assigned address blocks as follows:Region Address Block Total Addresses in Block Active Desktop and Access Ports1 10.96-103 2,097,152 Up to 128,000 (500 x 256)2 10.104-111 2,097,152 Up to 128,0003 10.112-119 2,097,152 Up to 128,0004 10.120-127 2,097,152 Up to 128,000This matches a bit mapping of 10.011r raaa.aass ssss.hhhh hhhh, where “r” indicates the regionbits (region minus 1), “a” indicates the area bits within that region, “s” indicates the subnet bitsrelative to the area, and “h” indicates the host bits in the subnet.Within each region, the 5 area bits allow for 32 areas (16 plus area 0 forces us up to 32,however, or 6 bits). Within each area, there are 32 or fewer hotels, which use 32 subnets. 6subnet bits are used to allow flexibility and also provide /30 blocks for the WAN links.Consulting Statement of Work 1CP Hotels requires a completely new design for the hotels portion of the network (HotelsModule internals, plus WAN connections). All other connectivity will remain the same asbefore.The plan is to reduce costs by using one or two Cisco ISR routers at each hotel, with one or twoInternet connections from local ISPs. Hotel guests will be able to use a hotel wired and/orwireless network to access the Internet directly over the ISP link, protected by the IOS Firewall.Page 30 WHAT IS MY NAME? (ARCH) v2.0 © 2007 Cisco Systems, Inc.