Table 17: Revertive, Non-Revertive Timing Reference Switching Operation - Alcatel-Lucent 7710 SR Configuration Manual

In particular, if a primary and secondary precedence is defined for revertive operation the system
shall automatically switch back to the preferred primary reference once that reference is
qualified.In addition, the system clock can be configured for revertive behavior as follows:

Table 17: Revertive, non-Revertive Timing Reference Switching Operation

Reference A
7710 SR OS Basic System Configuration Guide
Status of
Reference B
OK
Failed
OK
OK
OK
Failed
OK
Failed
Failed
Failed
OK
Status of Active Reference
Non-revertive Case
OK
OK
OK
Failed
OK
Failed
Failed
Failed
OK
Failed
OK
System Management
Active Reference
Revertive Case
A
B
B
A
A
holdover
A
holdover
B
holdover
A or B
A
B
A
A
A
holdover
A
holdover
B
holdover
A
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