Configuring NTP broadcast mode

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Configure NTP broadcast mode as follows:
-Configure the NTP broadcast server.
1. Run the system-view command to access the system view.
2. Run the interface interface-type interface-number command to specify the interface that sends NTP broadcast packets.
3. Run the ntp-service broadcast-server [ version number | [ authentication-keyid key-id | autokey ] | port port-number ] * command to configure the local firewall as the NTP broadcast server.
After the preceding configurations are complete, the local firewall periodically sends clock synchronization packets to broadcast address 255.255.255.255.
Note:
The broadcast mode can be used only in a LAN.
-Configure the NTP broadcast client.
1. Run the system-view command to access the system view.
2. Optional: Run the ntp-service max-dynamic-sessions number command to configure the number of dynamic sessions that can be established locally.
By default, a maximum of 100 dynamic NTP sessions can be established.
Running this command does not affect existing NTP sessions. After the number of local dynamic NTP sessions exceeds the upper limit, you can no longer establish new sessions.
3. Run the interface interface-type interface-number command to specify the interface that receives NTP broadcast packets.
4. Run the ntp-service broadcast-client command to configure the local firewall as the NTP broadcast client.
After the preceding configurations are complete, the local firewall receives broadcast NTP packets from the NTP server and synchronizes the local clock.

Other related questions:
Configuring common NTP multicast mode on the firewall
Configure common NTP multicast mode on the firewall as follows: 1. Configure FW_C as the NTP multicast server. 2. Configure FW_A and FW_D as the NTP multicast clients. For configuration examples, see "Example: Configuring Common NTP Multicast Mode" in USG6300 Product Documentation.

how to configure NTP and SNMP server on U1900
NTP configuration for U1900: 1.For configuring NTP server, just execute command: "start sntpserver" 2.For configuring NTP client, first execute command: "config ntpclient primaryserverip 192.168.109.25", the IP address should be NTP server IP address. And then execute command: "start ntpclient" SNMP server configuration for U1900: Execute command: "config add snmp manager ip "

Configure NTP on S series switches
S series switches (except S1700 switches) use NTP to synchronize clocks in the following modes: unicast NTP server/client, peer, broadcast, multicast, and manycast. The following is an example of synchronizing clock of Switch B with that of Switch A in the unicast NTP server/client mode. # Set the local clock of Switch A as the NTP master clock, and set the clock stratum to 2. [SwitchA] ntp-service refclock-master 2 # On Switch B, specify Switch A as its NTP server. [SwitchB] ntp-service unicast-server 10.0.0.1

How do I configure NTP for the SC of the SMC2.0?
Configure NTP for the SC of the SMC2.0 as follows: Run the date command. For example, to change the system time to UTC time 2014-09-03 17:57, run the date 20140903175700 command.

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