Configuring NTP broadcast mode

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.

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