Alcatel-Lucent 7750 SR OS Interface Configuration Manual page 81

7750 sr series

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Interface Configuration

APS Switchover Impact on Statistics

All SAP-level statistics are retained with an APS switch. A SAP will reflect the data received

regardless of the number of APS switches that has occurred. ATM statistics, however, are cleared

after an APS switch. Thus, any ATM statistics viewed on an APS port are only the statistics since

the current active member port became active.

Physical layer packet statistics on the APS group reflect what is currently on the active member

Port and path-level statistics follow the same behaviour as described above.

Any SONET physical-layer statistics (for example, B1,B2,B3,...) on the APS port are only what is

current on the active APS member port.

7750 SR OS Interface Configuration Guide