The JNCIE-ENT Emeritus signifies that the individual maintained an active JNCIE-ENT certification for a period of 9 years or longer. The JNCIE-ENT credential validates Junos OS expertise and the ability to deploy, configure, manage and troubleshoot Junos-based enterprise routing and switching platforms. A certification holder at this level is capable of building an enterprise network infrastructure consisting of multiple routers and switching devices.