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Hello and welcome. My name is Keith Barker.

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And if someone came up to us and said, "Hey, what time is it?"

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And then they asked another person, "What time is it?"

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And those times were different. You know, that's okay.

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Maybe one person has an analog watch or something,

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maybe it's off by a few minutes or a few seconds.

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But in a network, it's important to have accurate time

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on our devices for a lot of reasons,

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including synchronization of logging information

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for multiple devices and validation of digital certificates.

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Or if we have systems that are doing financial transactions,

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we need to make sure that they have the accurate timestamps
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X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000

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we need to make sure that they have the accurate timestamps

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on each of those transactions.

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And timestamps are also important for databases

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that may exist across multiple systems

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to make sure we have the accurate information

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documented at the right time.

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And the great news is there's more than just one way

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of synchronizing time across our networks.

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And we'll take a look at a couple options in this set of videos.

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So if you're ready, I'm ready.

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And I'll see you in the next video

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for the overview of time synchronization protocols.