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Updated:December 13, 2018
The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.
Configure Simple Network Time Protocol (SNTP) Multicast/Anycast on 200/300 Series Managed Switches
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.
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.