Nokia 7705 - Page 6

6
Basic System Configuration Guide
3HE 11010 AAAC TQZZA Edition: 01
6.3.4.1 Saving Configurations .............................................................................214
6.3.4.2 Specifying Post-Boot Configuration Files ................................................215
6.3.5 Automatic Synchronization......................................................................215
6.3.5.1 Boot-Env Option ......................................................................................215
6.3.5.2 Config Option...........................................................................................216
6.3.6 Manual Synchronization ..........................................................................216
6.3.6.1 Forcing a Switchover...............................................................................216
6.4 Node Timing ............................................................................................217
6.4.1 External Timing Mode..............................................................................221
6.4.2 Line Timing Mode....................................................................................223
6.4.3 Adaptive Clock Recovery (ACR) .............................................................224
6.4.3.1 ACR States..............................................................................................225
6.4.3.2 ACR Statistics..........................................................................................226
6.4.4 Differential Clock Recovery (DCR)..........................................................227
6.4.4.1 DCR Frequencies....................................................................................228
6.4.5 Proprietary Clock Recovery (PCR)..........................................................229
6.4.6 IEEE 1588v2 PTP....................................................................................231
6.4.6.1 PTP Clock Synchronization.....................................................................236
6.4.6.2 Performance Considerations...................................................................237
6.4.6.3 PTP Capabilities......................................................................................238
6.4.6.4 PTP Ordinary Slave Clock For Frequency ..............................................239
6.4.6.5 PTP Ordinary Master Clock For Frequency ............................................241
6.4.6.6 PTP Boundary Clock For Frequency.......................................................243
6.4.6.7 PTP Ordinary Slave Clock for Time of Day/Phase Recovery..................245
6.4.6.8 PTP Boundary Clock for Time of Day/Phase Recovery ..........................247
6.4.6.9 PTP End-to-End Transparent Clock for Time of Day/Phase
Recovery .................................................................................................247
6.4.6.10 PTP Master Clock for Time of Day/Phase Distribution............................248
6.4.6.11 PTP Clock Redundancy ..........................................................................249
6.4.6.12 PTP Ethernet Capabilities .......................................................................249
6.4.6.13 ITU-T G.8275.1........................................................................................251
6.4.6.14 PTP Statistics ..........................................................................................254
6.4.7 Network Timing Reference (NTR) ...........................................................256
6.4.7.1 NTR on xDSL Interfaces..........................................................................256
6.4.7.2 NTR on SHDSL Interfaces ......................................................................257
6.4.8 Synchronous Ethernet.............................................................................257
6.4.9 Synchronization Status Messaging with Quality Level Selection ............260
6.4.9.1 Timing Reference Selection Based on Quality Level ..............................264
6.5 System Configuration Process Overview ................................................267
6.6 Configuration Notes.................................................................................268
6.6.1 Reference Sources..................................................................................268
6.7 Configuring System Management with CLI .............................................269
6.8 System Management Configuration .......................................................270
6.8.1 Saving Configurations .............................................................................270
6.9 Basic System Configuration ...................................................................271
6.10 Common Configuration Tasks.................................................................272
6.10.1 System Information..................................................................................272
6.10.1.1 System Information Parameters..............................................................272
6.10.1.2 System Time Elements............................................................................275