Cisco EEM: On-Box Automation That Works When Your NMS Is Down

Cisco's Embedded Event Manager (EEM) is an event-driven automation framework built into IOS, IOS-XE, and NX-OS devices. It allows network engineers to create applets that react to syslog messages, SNMP thresholds, timers, and more, executing CLI commands, sending traps, or writing files. Unlike external automation tools, EEM runs on the device itself, ensuring resilience even when the network management system is unreachable.