Networking

Cisco SG300 time configuration

Learn about Cisco SG300 time configuration

Highlights

  • For the purposes of the post, I will show how to setup the SNTP settings in the web GUI as it is the simplest way to get your current time configuration up and running quickly.
  • After you have edited the configuration above, you need to save your changes by either clicking the little blinking save nag button at the top right hand of the browser session or by the CLI running the copy run start command on your switch.
  •  However, most devices are very time sensitive and it is a huge security issue to not have an accurate time source and configuration for devices in your environment.

Recently, after working with some logging on my Cisco SG300-20 switch, I wanted to write up a quick post on Cisco SG300 time configuration and how to go about setting this up.

Cisco SG300 time configuration

For the purposes of the post, I will show how to setup the SNTP settings in the web GUI as it is the simplest way to get your current time configuration up and running quickly.

Login to your SG300 and go to Administration >> Time Settings >> System Time.

Here you will find the Clock Source Settings and Main Clock Source (SNTP Servers).  Select to Enable this setting.
sg300_time01

Also on that same configuration page, you can set your time zone offset as well as enable or disable Daylight Savings.
sg300_time02

Next click on the SNTP Unicast menu option and select to enable the SNTP Client Unicast setting.  On the same page you can add your NTP servers under the Unicast SNTP Server Table by clicking the Add button.
sg300_time03

This brings up the dialog box to add your NTP servers.  Select to add either by IP Address or By Name and enter the SNTP Server IP Address.
sg300_time04

After you have edited the configuration above, you need to save your changes by either clicking the little blinking save nag button at the top right hand of the browser session or by the CLI running the copy run start command on your switch.

Final Thoughts

Time configuration is an often overlooked area of a lab or even production network in some cases.  However, most devices are very time sensitive and it is a huge security issue to not have an accurate time source and configuration for devices in your environment.  Logging, authentication, and other major infrastructure services are affected.

If you don’t have an internal time source for your network, pointing to pool.ntp.org is a good alternative for having accurate time configuration on network devices.

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Brandon Lee

Brandon Lee is the Senior Writer, Engineer and owner at Virtualizationhowto.com and has over two decades of experience in Information Technology. Having worked for numerous Fortune 500 companies as well as in various industries, Brandon has extensive experience in various IT segments and is a strong advocate for open source technologies. Brandon holds many industry certifications, loves the outdoors and spending time with family.

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