JNCIP-ENT case studies
JNCIP-ENT · Put your knowledge to work in context.
JNCIP-ENT - Enterprise Routing and Switching, Professional - is the third of four certifications in the Juniper Enterprise Routing and Switching track, sitting above JNCIA-Junos and JNCIS-ENT and below JNCIE-ENT. It targets experienced networking professionals who already hold advanced knowledge of Junos OS and want to prove depth in advanced routing technologies plus the related platform configuration and troubleshooting skills. The written exam is code JN0-650, delivered by Pearson VUE in English only, and runs 90 minutes over 65 multiple-choice questions, with pass/fail status available immediately after the exam. It is built against Junos OS v25.2. Topics on this exam: Interior Gateway Protocols (IGPs), BGP, IP Multicast, Ethernet Switching and Spanning Tree, Layer 2 Authentication and Access Control, IP Telephony Features, Class of service (CoS), and EVPN. The JNCIP-ENT case studies are 5 cases and about 2,833 words.
1OSPF Area Design and a Duplicate Router ID
Your campus runs OSPF with three areas. Area 0 contains core routers R1 and R2.
549 words, about 3 min2BGP Next-Hop Reachability Through a Route Reflector
AS 65000 runs six PE routers. R1 and R2 are route reflectors in cluster 1.1.1.1.
546 words, about 3 min3PIM-SM RPF Failure and an SSM Group Joined with IGMPv2
An enterprise runs PIM-SM with a static RP at 10.255.0.1 on core router C1. A source at 10.10.1.50 on VLAN 10 sends a feed to 239.1.1.1.
571 words, about 3 min4MSTP Region Mismatch and an Unprotected Access Port
Two core switches, C1 and C2, are in MSTP region CORP, revision 1. VLAN 10 is mapped to MSTI 1 and VLAN 20 to MSTI 2.
587 words, about 3 min5EVPN ESI Mismatch on a Dual-Homed Server
A data center uses EVPN-VXLAN with two spines and four leafs. Each leaf has a loopback in 10.0.0.0/24 carried by the underlay IGP.
580 words, about 3 min