150Network synchronization configuration exampleNetwork requirementsAs shown in Figure 49, configure Device B to derive its timing from Device A through POS 2/2/0.Figure 49 Network diagramConfiguration procedure1. On Device A:# Specify the master clock mode on POS 2/2/0. system-view[DeviceA] interface pos 2/2/0[DeviceA-Pos2/2/0] clock master2. On Device B:# Specify POS 2/2/0 as a line clock input port. system-view[DeviceB] network-clock source lpuport pos 2/2/0# Specify the slave clock mode on the POS interface.[DeviceB] interface pos 2/2/0[DeviceB-Pos2/2/0] clock slave[DeviceB-Pos2/2/0] quit# Specify the interface as the source to provide clock reference.[DeviceB] network-clock work-mode manual source lpuport pos 2/2/0[DeviceB] quitVerifying the configuration# Verify that the POS interface provides the network clock reference for Device B. display network-clock statusMode : ManualTraced reference : pos 2/2/0Lock mode : LockedOSC state : NormalSSM output level : SSUBSSM control enable: On
