Nokia 7210 SAS-M - 6.5.2 Synchronization Options Available on 7210 SAS Platforms

System Management
272
7210 SAS-M, T, R6, R12, Mxp, Sx, S Basic System
Configuration Guide
3HE 16132 AAAB TQZZA Edition: 01
When quality Level (QL) selection mode is disabled, the reversion setting controls
when the central clock can reselect a previously failed reference.
Table 30 lists the selection followed for two references in both revertive and non-
revertive modes.
6.5.2 Synchronization Options Available on 7210 SAS
Platforms
Table 31 lists the synchronization options supported on 7210 SAS platforms. The
7210 SAS-Mxp, 7210 SAS-Sx 1/10GE, and 7210 SAS-Sx 10/100GE support these
synchronization options only when operating in the standalone mode.
Table 30 Revertive, non-Revertive Timing Reference Switching
Operation
Status of
Reference A
Status of
Reference B
Active Reference
Non-revertive Case
Active Reference
Revertive Case
OK OK A A
Failed OK B B
OK OK B A
OK Failed A A
OK OK A A
Failed Failed holdover holdover
OK Failed A A
Failed Failed holdover holdover
Failed OK B B
Failed Failed holdover holdover
OK OK A or B A