Topology Diagrams
Network configuration diagrams and related documentation generally include local-area network (LAN) connectivity, wide-area network (WAN) infrastructure connectivity, IP subnet information, critical servers, network devices, and more. Having accurate diagrams of the new environment can be invaluable when troubleshooting connectivity issues. For topology diagrams that can be used for troubleshooting connectivity issues, consider documenting the following:
• Internet service provider contact names, including technical support contact information
• Connection type (such as T1, T3, 10Mbps fiber, 20Mbps fiber, and so on)
• Link speed
• Committed information rate (CIR)
• Endpoint configurations, including routers used
• Message flow ...
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