3com S7906E インストール手順
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The NTP client on a PE can be synchronized to the NTP server on another PE through a
designated VPN instance.
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The NTP server on a PE can synchronize the NTP clients on multiple CEs in different VPNs.
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A CE is a device that has an interface directly connecting to the service provider (SP). A CE is not
“aware of” the presence of the VPN.
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A PE is a device directly connecting to CEs. In an MPLS network, all events related to VPN
processing occur on the PE.
NTP Configuration Task List
Complete the following tasks to configure NTP:
Task
Remarks
Required
Optional
Optional
Optional
Optional
Configuring the Operation Modes of NTP
Devices can implement clock synchronization in one of the following modes:
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Client/server mode
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Symmetric mode
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Broadcast mode
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Multicast mode
For the client/server mode or symmetric mode, you need to configure only clients or symmetric-active
peers; for the broadcast or multicast mode, you need to configure both servers and clients.