Normal Operation before APM Enabled
Assuming that APM has not been enabled, the circumstances are as follows:
The APM state machine of both QPs or EECs are in the Migrated state.
The BTH:MigReq bit is set to one in every request and response packet generated by the two QPs or EECs.
Each of the two QPs or two EECs has been programmed (during QP or EEC setup) with primary path information but not with alternate path information.
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