Transition Networks MIL-SM808GPXX - Manual (Page 90)

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on the network. LACP operation requires full-duplex mode. For more detailed
information refer to IEEE 802.3ad.
If there are two trunk groups A and B, and B group is enabled LACP, then it will
act as a redundant link (Backup group for Trunk group A). If trunk group A fails,
Group B will be it's backup.