3Com 5500 NTP Symmetric Peers Mode Configuration, Configuration Procedure Configure Device C

272CHAPTER 31: NTP CONFIGURATION GUIDE

[DeviceB] display ntp-service sessions

Complete Configuration #

ntp-service unicast-server 1.0.1.11

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

3.0.1.31/24

3.0.1.32/24 3.0.1.33/24

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 symmetric-peer.

Applicable Products

Product series	Software version	Hardware version
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

Configuration Procedure ■ Configure Device C.

# Set Device A as the time server.

<DeviceC> system-view

[DeviceC] ntp-service unicast-server 3.0.1.31

■Configure Device B (after Device C is synchronized to Device A).