Protocols And Standards; Configuration Restrictions And Guidelines; Configuration Task List - H3C SR6600-X Configuration Manual

Configure the PEs to operate in NTP client or symmetric active mode.
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• Specify the VPN to which the NTP server or NTP symmetric passive peer belongs.
Figure 29 Network diagram

Protocols and standards

RFC 1305, Network Time Protocol (Version 3) Specification, Implementation and Analysis
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RFC 5905, Network Time Protocol Version 4: Protocol and Algorithms Specification
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Configuration restrictions and guidelines

When you configure NTP, follow these restrictions and guidelines:
• You cannot configure both NTP and SNTP on the same device.
Do not configure NTP on an aggregate member port.
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The NTP service and SNTP service are mutually exclusive. You can only enable either NTP service
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or SNTP service at a time.
To ensure time synchronization accuracy, H3C recommends not specifying more than one reference
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source. Doing so might cause frequent time changes or even synchronization failures.
Make sure you use the clock protocol command to specify the time protocol as NTP on an MDC. For
•
more information about the clock protocol command, see Fundamentals Command Reference.
• You can configure NTP only on one MDC.

Configuration task list

Tasks at a glance
(Required.)
(Required.) Perform at least one of the following tasks:
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Configuring NTP association modes
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Configuring the local clock as a reference source
(Optional.)
Enabling the NTP service
Configuring access control rights
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