Glossary Current: M M Make-Before-Break (MBB) (clean switching) MBB MCS Media Control Service (AMCS; MCS) — The Arista Media Control Service is Arista’s solution for multicast orchestration. Media Infrastructure Solution (MIS) — A solution for a media infrastructure with high bandwidth requirements. MIS MLAG MPEG compression — MPEG https://wikipedia.org/wiki/Moving_Picture_Experts_Group compression (H.264(aka AVC https://wikipedia.org/wiki/Advanced_Video_Coding) and H.265 ( aka HEVC https://wikipedia.org/wiki/High_Efficiency_Video_Coding)) uses several bit rates ( Normal, Low, High ..) Multi-chassis link aggregation group (MLAG) — Multi-chassis link aggregation group https://wikipedia.org/wiki/Multi-chassis_link_aggregation_group => increases the bandwidth and provides additional node level redundancy (↔ LAG ). This allows two or more nodes to share a common LAG endpoint. Multiviewer (MV) — A device or software that allows to monitor multiple video signals at the same time, arranged in different-sized tiles (called PIPs) on a single monitor. MV ×