Interface Configuration
7750 SR Interface Configuration Guide Page 251
→ The ADM that terminates APS should support standard APS switchover time
requirements.
→ The far end IMA/MLPPP links must be able to tolerate cell loss during APS
switchover without bringing links down. This includes, for example, a combination of
link activation/deactivation and appropriate configuration of TDM/SONET debounce
timers.
→ Because of the temporary cell loss during the APS switchover, the far end IMA/
MLPPP will experience a misalignment between individual links within an IMA/
MLPPP group. The far end IMA/MLPPP group must support fast-realignment of
links without having to bring the links down. The router synchronizes the IMA/
MLPPP streams the far end receives between switchovers in an effort to cause the
least amount of misalignment.
→ To increase the BPGrp robustness, it is recommended to provision more IMA/MLPPP
links than is required and set the minimum links and max bandwidth parameters to the
number of required links. This type of configuration is required on the far end as well.
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