Link aggregation also referred to as interface bonding joins multiple physical interfaces into a virtual bond interface. This interface can then be configured for Load Sharing (Active/Active) or High Availabilty (Active/Backup). HA enables redundancy in the event of physical interface or even upstream switch failure. Load Sharing maximizes throughput by load blancing amongst the interfaces. Load sharing does not support switch redundancy but when switch stack is used (Cisco Catalyst 3750/3850 etc) I see no reason why this would not work.
Below is instructions on how to setup either HA or Load Sharing, using Check Point R77.10 Gaia. Please test in a lab environment before implementation in production.
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