1️⃣ Switch Stacking - Treats multiple physical switches as one logical switch for easier management. These technologies serve different purposes, but they are often used. MLAG (Multi-chassis Link Aggregation Group): a non-standard protocol, that implements link aggregation among multiple devices. The devices at both ends of the MLAG send MLAG negotiation packets through the peer-link. Also. Recently i have read syllabus of CCNA exam, i seen one topic under LAN switching and technology, Describe the benefits of switch stacking and chassis aggregation, what does it mean, what mean by switch stacking and chassis aggregation. how can i answer of this question. Campus networks typically adopt a tiered design, scaled according to the specific needs of the individual campus.