Methods Used by a Host for Fault Isolation
There are a few situations in which isolating or finding the exact cause of a problem might be very difficult and time-consuming. To overcome these problems, there are a few algorithms that can be used by a host to isolate the problem. If the exact nature of a problem is not identified, the efficiency of a network will come down drastically. The algorithms that can be used by a host are network level detection and polling.
In network level detection, if the router to which the message is sent is not functioning, an error message is sent to the host indicating that the router is unreachable by the intermediate devices on the network. This message is also referred to as a host dead message. ...
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