Overview

Incorrect network connections or configurations can create Layer 2 loops, which results in repeated transmission of broadcasts, multicasts, or unknown unicasts. The repeated transmission can waste network resources and can sometimes paralyze networks. The loop detection mechanism immediately generates a log when a loop occurs so that you are promptly notified to adjust network connections and configurations. You can configure loop detection to shut down the looped port. Logs are maintained in the information center. For more information, see Network Management and Monitoring Configuration Guide.