Operation Manual – NTPH3C S3100 Series Ethernet Switches Chapter 1 NTP Configuration1-19The above output information indicates that Device B is synchronized to Device A, andthe stratum level of its clock is 3, one level lower than that of Device A.# View the information about NTP sessions of Device B. (You can see that Device Bestablishes a connection with Device A.)[DeviceB] display ntp-service sessionssource reference stra reach poll now offset delay disper**************************************************************************[12345]1.0.1.11 127.127.1.0 2 1 64 1 350.1 15.1 0.0note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configuredTotal associations : 11.8.2 Configuring NTP Symmetric Peer ModeI. Network requirementsz The local clock of Device A is set as the NTP master clock, with the clock stratumlevel of 2.z Device C (an S3100 Ethernet switch) uses Device A as the NTP server, andDevice A works in server mode automatically.z The local clock of Device B is set as the NTP master clock, with the clock stratumlevel of 1. Set Device C as the peer of Device B.II. Network diagramDevice ADevice B Device C3.0.1.31/243.0.1.32/24 3.0.1.33/24Figure 1-7 Network diagram for NTP peer mode configurationIII. Configuration procedure1) Configure Device C.# Set Device A as the NTP server. system-view[DeviceC] ntp-service unicast-server 3.0.1.312) Configure Device B (after the Device C is synchronized to Device A).
