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Create a cisco network diagram showing core layer with Catalyst 6500 switches, distribution layer with Catalyst 4500 switches, access layer with Catalyst 2960 switches, ASA firewalls for security, ISR routers for WAN connectivity, wireless LAN controllers, access points, IP phones, servers in DMZ, workstations, printers, VLAN segmentation, trunk links, STP configuration, HSRP for redundancy, and Internet connectivity through redundant ISP connections.