What should be the server status when playing "MW3"?

To effectively play on an online server for "Call of Duty: Modern Warfare 3," the server status should be at DEFCON 5. This status indicates that the online services for the game are all functional.

To improve a "Modern Warfare 3" connection to an online server, avoid engaging in bandwidth-heavy activities, such as streaming videos, or improve a direct connection through a wired Ethernet connection. There is also the option of matchmaking, in which a player is connected to a server that has the best compatibility to the player's connection status and can connect based on region and other variables.