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Check the physical connection - A loose cable or cord can often be the cause of a connection problem. Make sure everything is securely connected to the wall and device. 3. Reboot your modem/router - Sometimes the old "turn it off and on again" approach actually does work! Just wait about five minutes before turning it back on to make sure ...
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This solution works but causes some other problems. It is not passive any longer, so in the case of a failure the link can go down and the services on the link are interrupted. To minimize this problem each copper tap has a bypass switch (relays), which closes in a power down situation (as shown in the picture), to bring the link back up.
For example, link flap occurs when an interface on a router has a hardware failure that causes the router to announce it alternately as up and down. In networks with link-state routing protocols , route flapping will force frequent recalculation of the topology by all participating routers.
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ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It is available for virtually all operating systems that have networking capability, including most embedded network administration software.
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Another limitation appears when routers do not respond to probes or when routers have a limit for ICMP responses. [17] In the presence of traffic load balancing , traceroute may indicate a path that does not actually exist; to minimize this problem there is a traceroute modification called Paris-traceroute, [ 18 ] which maintains the flow ...