Making Your Network Troubleshooting Friendly
Making your network easy to troubleshoot is a potentially large subject. At most times, the debugging or troubleshooting friendliness of your TCP/IP network depends on how you treat the Internet protocol that was designed specifically with debugging in mind, the Internet Control Message Protocol (ICMP).
ICMP is the protocol for sending and receiving control messages between hosts and gateways, mainly to provide feedback to a sender about any unusual or difficult conditions en route to the target host.
There is a lot of ICMP traffic, which usually just happens in the background while you are surfing the Web, reading email, or transferring files. Routers (you are aware that you are building one, right?) ...
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