American Fibertek SM9p - Manual (Page 167)

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4. SNTP Sever URL: set the SNTP server IP address.
5. Daylight Saving Period Start: set up the Daylight Saving beginning time. Daylight
Saving benign time will be different in every year.
6. Daylight Saving Period End: set up the Daylight Saving ending time. Daylight
Saving ending time will different in every year.
7. Daylight Saving Offset (mins): set up the offset time.
8. Switch Timer: display the switch current time.
9. Click Apply .
SNTP Configuration interface
IGMP Configuration
The Internet Group Management Protocol (IGMP) is an internal protocol of the Internet
Protocol (IP) suite. IP manages multicast traffic by using switches, routers, and hosts that
support IGMP. Enabling IGMP allows the ports to detect IGMP queries and report packets
and manage IP multicast traffic through the switch. IGMP have three fundamental types of
message as follows: