ENSLD 300-420 case studies
ENSLD 300-420 · Put your knowledge to work in context.
The CCNP Enterprise certification page on Cisco.com describes the CCNP Enterprise as the professional-level certification track within Cisco's Enterprise certification family. The ENSLD 300-420 exam, commonly called Designing Cisco Enterprise Networks, is one of the concentration exams associated with that track. The ENSLD 300-420 case studies are 5 cases and about 2,941 words.
1Merger Network: Hierarchy, Overlap, and Convergence
Northwind Components, formed from a merger, runs a flat network: a single OSPF area 0 across headquarters (2,400 users), two data centers, and 14 branch offices. The acquired company still uses 10.0.0.0/8 addresses that overlap Northwind's 10.10.0.0/16.
569 words, about 3 min2University Campus Segmentation Under a Five-Month Deadline
State University has 12 buildings, 18,000 wired endpoints, 1,200 access points, and 60,000 students and staff. The core is a pair of Catalyst 6500 VSS with 10G fiber to 3850 stacks; all user VLANs are trunked to the core, and a single OSPF area spans campus.
617 words, about 3 min3Retail SD-WAN: Local Breakout, PCI, and Video
RetailCo operates 450 stores. Each store has a 20 Mbps MPLS circuit back to a hub in Dallas and a 100/20 Mbps broadband circuit used only for guest Wi-Fi.
615 words, about 3 min4Insurer Automation: Source of Truth, Compliance, and Telemetry
An insurer has 600 routers and switches across 40 offices, managed by three engineers using CLI templates and spreadsheets. Last quarter, 12% of devices failed a CIS benchmark, and three outages were caused by manual VLAN changes.
553 words, about 3 min5Production Campus: Multicast and QoS for Live Video
MediaWorks has a three-building production campus with 2,200 users and 400 editors. Editors use multicast for live video feeds (20 streams, 30 Mbps each) and shared storage; the backbone is 10G, but multicast is flooding all VLANs because PIM sparse mode has no RP redundancy and the RP is a single 3560.
587 words, about 3 min