3Com E4500-24, Руководство по настройке CLI, Страница: 624 / 848

1-4
Server/client mode
Figure 1-2 Server/client mode
Symmetric peer mode
Figure 1-3 Symmetric peer mode
Passive peer
Clock synchronization
request packet
Synchronize
Network
Active peer
Works in passive peer
mode automatically
In peer mode, both sides
can be synchronized to
each other
Response packet
In the symmetric peer mode, the local S4500 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.
Broadcast mode
Figure 1-4 Broadcast mode