
272CHAPTER 31: NTP CONFIGURATION GUIDE
[DeviceB] display
Complete Configuration #
Precautions The local clock of a 3Com Switch 5500, 5500G, or 4210 cannot be set as a reference clock. It can synchronize other devices as a reference clock only when its clock is synchronized.
NTP Symmetric Peers
Mode Configuration
Network Diagram Figure 83 Network diagram for NTP symmetric peers mode configuration
Device A
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Networking and
Configuration
Requirements
Device B | Device C |
■The local clock of Device A is to be used as a reference source, with the stratum level of 2.
■Device C is a Switch 5500 which takes Device A as the time server, and Device A automatically works in the server mode.
■The local clock of Device B is to be used as a reference source, with the stratum level of 1. Set Device B to take Device C as the
Applicable Products
Product series | Software version | Hardware version |
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|
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Switch 5500 | Release V03.02.04 | All versions |
Switch 5500G | Release V03.02.04 | All versions |
Switch 4500 | Release V03.03.00 | All versions |
Switch 4210 | Release V03.01.00 | All versions |
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|
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Configuration Procedure ■ Configure Device C.
# Set Device A as the time server.
<DeviceC>
[DeviceC]
■Configure Device B (after Device C is synchronized to Device A).