JNCIE-SP case studies

JNCIE-SP · Put your knowledge to work in context.

The Juniper Networks Certified Internet Expert – Service Provider (JNCIE-SP) is Juniper's expert-level certification for network engineers who design, build, and operate large-scale service provider networks on Junos OS. It sits above the JNCIP-SP professional credential and is aimed at engineers with several years of hands-on Junos experience who already understand routing fundamentals and now need to prove they can configure and troubleshoot a complete SP topology under their own direction. The JNCIE-SP case studies are 5 cases and about 3,948 words.

IS-IS L1 Exit Selection and OSPF Redistribution Feedback

A service provider runs IS-IS with a single L1 access region and an L2 core. Twelve aggregation routers sit in L1; R1 and R2 are the only L1/L2 ABRs, and both set the attached bit.

882 words, about 4 min 2

RSVP-TE Mesh with Secondary Paths and Admin-Group Constraints

A 14-router MPLS core carries a full mesh of 56 RSVP-TE LSPs among eight PE routers. Each primary LSP requests 300 Mbps; core links are 10 Gbps with 30 percent reservable bandwidth.

768 words, about 4 min 3

Hub-and-Spoke VRF Leaking with a Shared-Services Extranet

A provider operates a hub-and-spoke VPN for an enterprise: one hub VRF, 120 spoke VRFs, and a shared-services VRF hosting DNS and a partner extranet. Each spoke imports only the hub route target; the hub imports all spoke route targets; shared services imports every spoke RT.

734 words, about 4 min 4

EVPN-MPLS All-Active Multihoming with MAC Mobility

An EVPN-MPLS network has six leaf PE routers and two spine P routers. A customer access switch is dual-homed to PE1 and PE2 with an ESI and all-active multihoming; BUM traffic is replicated across the ESI.

775 words, about 4 min 5

NSR/GRES Upgrade Window with BFD and Lo0 Filter

A provider schedules a Junos upgrade on a core P router at 02:00. The router runs IS-IS, RSVP-TE, LDP, and BGP VPNv4 with 4,000 VPN routes; NSR and GRES are enabled, and BFD is configured for OSPF and BGP.

789 words, about 4 min