7210 SAS-MXP, R6, R12, S, SX, T BASIC SYSTEM
CONFIGURATION GUIDE RELEASE 22.9.R1
Table of contents
6.2.1.1 Redundancy....................................................................................................................248
6.2.1.2 Nonstop forwarding and routing on 7210 SAS-R6 and 7210 SAS-R12......................... 250
6.2.1.3 CPM switchover on 7210 SAS-R6 and 7210 SAS-R12.................................................251
6.3 Temperature threshold alarm and fan speed................................................................................. 251
6.3.1 Synchronization.......................................................................................................................252
6.3.1.1 Configuration and boot-env synchronization..................................................................252
6.3.1.2 State database synchronization.....................................................................................252
6.4 Synchronization and redundancy....................................................................................................253
6.4.1 Active and standby designations on 7210 SAS-R6 and 7210 SAS-R12................................254
6.4.2 Active and standby designations on 7210 SAS-Sx/S 1/10GE in standalone-VC mode..........254
6.4.3 When the active CPM goes offline.........................................................................................255
6.4.4 Configuration guidelines for synchronization of active and standby CPM on 7210 SAS-R6
and 7210 SAS-R12.....................................................................................................................256
6.5 Network synchronization................................................................................................................. 256
6.5.1 Central synchronization subsystem........................................................................................258
6.5.2 Synchronization options available on 7210 SAS platforms....................................................260
6.5.3 Synchronization Status Messages......................................................................................... 261
6.5.4 DS1 signals.............................................................................................................................261
6.5.5 E1 signals............................................................................................................................... 261
6.5.6 Synchronous Ethernet............................................................................................................ 262
6.5.6.1 Clock source quality level definitions.............................................................................263
6.5.7 IEEE 1588v2 PTP.................................................................................................................. 265
6.5.7.1 PTP clock synchronization............................................................................................. 271
6.5.7.2 Performance considerations...........................................................................................273
6.5.7.3 PTP end-to-end Transparent Clock............................................................................... 273
6.5.7.4 PTP message transparent forwarding........................................................................... 274
6.5.7.5 PTP capabilities..............................................................................................................276
6.5.7.6 PTP ordinary timeReceiver clock for frequency.............................................................276
6.5.8 PTP boundary clock for frequency and time..........................................................................277
6.5.9 1PPS and 10MHz output interface.........................................................................................278
6.5.10 Configuration guidelines and restrictions for PTP................................................................ 278
6.5.11 Configuration example to use PTP and SyncE references.................................................. 280
6.6 Management of 1830 VWM............................................................................................................280
6.6.1 Introduction............................................................................................................................. 280
6.6.2 Feature description................................................................................................................. 281
6.6.2.1 1830 CWDM shelf layout and description..................................................................... 282
3HE 18197 AAAB TQZZA
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