The Enterprise Routing and Switching, Specialist (JNCIS-ENT) certification (JN0-351) is an intermediate-level Juniper certification designed for network engineers, system administrators, and IT professionals responsible for deploying, configuring, and managing Juniper enterprise networks. This course aligns with the official JN0-351 exam objectives and builds on the foundational knowledge from JNCIA-Junos (JN0-105), preparing you to handle more complex routing and switching operations.

This certification validates your expertise in advanced networking concepts, layer 2 and layer 3 switching, routing protocols, and Junos device configuration for enterprise environments. It is an ideal stepping stone toward higher-level certifications like JNCIP-ENT and JNCIE-ENT.

Key topics include:

• Junos OS advanced configuration: interface setup, routing instances, and VLAN operations

• Layer 2 switching: VLANs, trunking, spanning tree protocols (RSTP/MSTP), and Ethernet-switching tables

• Layer 3 routing: static and dynamic routing using OSPF, IS-IS, BGP, and RIP

• Routing policy & firewall filters: creating policies for route control, redistribution, and traffic filtering

• High availability (HA) features: VRRP, link aggregation (LACP), and redundant network design

• Multicast & IPv6 fundamentals: configuring PIM, IGMP, and IPv6 routing protocols

• Device security & management: securing access, monitoring logs, and using Junos operational commands

• Troubleshooting enterprise networks: identifying and resolving routing loops, VLAN misconfigurations, and connectivity issues

Junos OS advanced configuration: interface setup, routing instances, and VLAN operations

Layer 2 switching: VLANs, trunking, spanning tree protocols (RSTP/MSTP), and Ethernet-switching tables

Layer 3 routing: static and dynamic routing using OSPF, IS-IS, BGP, and RIP

Routing policy & firewall filters: creating policies for route control, redistribution, and traffic filtering

High availability (HA) features: VRRP, link aggregation (LACP), and redundant network design

Multicast & IPv6 fundamentals: configuring PIM, IGMP, and IPv6 routing protocols

Device security & management: securing access, monitoring logs, and using Junos operational commands

Troubleshooting enterprise networks: identifying and resolving routing loops, VLAN misconfigurations, and connectivity issues

The course includes practice tests simulating real-world enterprise networking scenarios, such as configuring multi-VLAN environments, optimizing routing policies, and securing network traffic. Each question includes detailed explanations to reinforce learning and improve exam readiness.

By completing this course, you’ll be fully prepared to pass the JNCIS-ENT exam (JN0-351) and ready for roles such as Enterprise Network Engineer, Systems Administrator, NOC Engineer, or Infrastructure Specialist, enabling you to design, manage, and secure enterprise-scale Juniper networks.