Ntp Implementation Modes - 3Com 4200G 12-Port Configuration Manual

NTP Implementation Modes

According to the network structure and the position of the local Ethernet switch in the network, the local
Ethernet switch can work in multiple NTP modes to synchronize the clock.
Server/client mode
Figure 1-2 Server/client mode
Symmetric peer mode
Figure 1-3 Symmetric peer mode
Active peer
In peer mode, both sides
can be synchronized to
each other
In the symmetric peer mode, the local S4200G Ethernet switch serves as the symmetric-active peer
and sends clock synchronization request first, while the remote server serves as the symmetric-passive
peer automatically.
If both of the peers have reference clocks, the one with a smaller stratum number is adopted.
Passive peer
Network
Clock synchronization
Works in passive peer
request packet
mode automatically
Response packet
Synchronize
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