A: Multichassis Link Aggregation Group (M-LAG) implements link aggregation among multiple devices. One device is connected to two devices through M-LAG to constitute a dual-active system. M-LAG achieves device-level link reliability but not card-level link reliability.
For details about how to configure M-LAG, M-LAG configuration restrictions and configuration examples, see M-LAG Best Practices. This document also recommends M-LAG deployment models and configuration suggestions in more multi-feature scenarios.
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