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Bandwidth used by NTP traffic

Rupesh Kashyap
Level 1
Level 1

‎11-13-2009 12:15 AM - edited ‎03-04-2019 06:42 AM

Hi, I have 250 number of switches in my network. I have setup one NTP Server Switch also. Connection to all switches to NTP server Switch is L3. How much bandwidth NTP will use in the network, please suggest.

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Istvan_Rabai
Level 7
Level 7

‎11-13-2009 02:36 AM

Hi Rupesh,

I have the understanding that the NTP configurations are already in place.

In this case you could enable "ip nbar protocol-discovery" on the interfaces where you are interested about bandwidth consumption.

The "show ip nbar protocol-discovery" command will show you (among others) the number and byte count of NTP packets that have been input or output on the interface during the period since nbar protocol-discovery was enabled.

From these data you will be able to calculate the average bandwidth consumption of NTP for each affected interface per direction of flow.

Cheers:

Istvan

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