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What causes packet loss across the WAN?

Learn what causes packet loss across the WAN in this expert response.

What causes packet loss across the WAN?
Packets can be dropped due to errors in routing dynamics (router congestion, route changes) or possible equipment malfunctions. Ping loss is expressed as the percentage of test packets sent but not echoed. Values are not uncommon and affect the choice of protocol for a given application. For example, TCP for guaranteed delivery or UDP for data that can tolerate dropouts.
This was first published in May 2007

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