Objective

Simple Network Time Protocol (SNTP) is a protocol to synchronize the clock of the networked computer systems while the computer transfers data via internet. An anycast is a connection between the a client and a list of addresses. A multicast is a one to many connection which periodically sends an unsolicited message to a respective IPv4 or IPv6 local broadcast address, or to a multicast group address and listens on this address.

The objective of this document is to explain how to configure SNTP Multicast/Anycast on the SF/SG 200 and SF/SG 300 Series Switches.

Note: To configure SNTP Multicast/Anycast, you must first enable an SNTP server to provide the time. For information on how to do this, please refer to the article System Time Configuration on the 200/300 Series Managed Switches.

Applicable Devices

• SF/SG 200 and SF/SG 300 Series Managed Switches

Software Version

• v1.2.7.76

Multicast/Anycast Configuration

Step 1. Log in to the web configuration utility and choose Administration > Time Settings > SNTP Multicast/Anycast. The SNTP Multicast/Anycast page opens:

Step 2. Check the SNTP Multicast Client Mode (Client Broadcast Reception) check box to enable SNTP Multicast Client Mode. In this mode, the switch broadcasts time request packets to all SNTP servers within the network, and waits for a response.

Step 3. Check the SNTP Anycast Client Mode (Client Broadcast Transmission) check box to enable SNTP Anycast Client Mode. In this mode, the switch sends queries to manually configured SNTP servers, and waits for a response.

Step 4. Click Apply to save your configuration.