JNCDS-DC case studies
JNCDS-DC · Put your knowledge to work in context.
The JNCDS-DC is a Juniper Networks data center design certification, and this page is an independent study resource for candidates preparing for it. Juniper's certification pages now sit within the HPE networking portfolio, alongside Juniper QFX Series Switches, Juniper PTX Series Routers, Juniper SRX Series Firewalls, and Apstra Data Center Director - the product families whose design concepts the credential is built around. The JNCDS-DC case studies are 5 cases and about 2,955 words.
1Brownfield Consolidation for a 48-Rack Hall with an 8 kW per Rack Limit
A retailer is consolidating two aging data centers into one hall with 48 racks. Each rack is limited to 8 kW and 42 RU, and the compute refresh in Q3 will use 20 servers per rack, each with 2×25GbE.
606 words, about 3 min2EVPN-VXLAN ESI-LAG Blackhole After Leaf Reboot
A media company runs an EVPN-VXLAN fabric with 4 spines and 16 leaves. The underlay is eBGP with default BGP timers and no BFD; the overlay uses iBGP with route reflectors on the spines.
595 words, about 3 min3eBGP Underlay ASN Plan for Two Pods with 20,000 Tenant Routes
A financial services firm is building two pods, each with 6 spines and 24 leaves, joined by a 2×100G DCI. The underlay is eBGP; the overlay is EVPN iBGP with spines as route reflectors.
583 words, about 3 min4PCI Segmentation with a Stateful Firewall in an EVPN-VXLAN Fabric
A payment processor operates a three-tenant EVPN-VXLAN fabric: PCI (40 workloads), corporate (200), and shared services (30). PCI-to-corporate traffic must be inspected by a pair of SRX4600 firewalls, each rated 20 Gbps, in active/active mode.
592 words, about 3 min5ZTP and Telemetry Rollout for 60 Switches with Configuration Drift
A service provider is deploying 60 QFX switches across three pods. The current manual process takes two engineers three days per pod, and 11% of devices drift within 30 days, mostly NTP, syslog, and VLAN changes.
579 words, about 3 min