Understand the certification
300-620 DCACI(Implementing Cisco Application Centric Infrastructure)是 CCNP Data Center 的 ACI 实施专项,60 题 / 90 分钟。这是所有 CCNP DC 专项中题库最大(300+ 练习题)的一门。
Cisco ACI 是 Cisco 的 SDN(软件定义网络)数据中心解决方案,核心组件是 APIC(Application Policy Infrastructure Controller)控制器 + Nexus 9000 Spine/Leaf 交换机。考试围绕 ACI 的对象模型:Tenant → VRF → Bridge Domain → EPG → Contract,以及外部网络集成(L3Out / L2Out)。
约 30% 的题考 ACI Fabric 初始化(APIC Discovery、Fabric Membership、Switch Profile/Interface Profile)。20% 考 Multi-Pod 和 Multi-Site 架构。Contract 和 Filter 的配置逻辑是考试的核心难点 — ACI 的白名单模型(deny-all by default)和传统网络的 ACL 思维完全相反。
Exam at a glance
- Exam code
- 300-620
- Provider
- Cisco
- Format
- Single choice / Multiple select
- Language
- English
- Validity
- 3 years
- Exam fee
- $330
Skills in focus
Learning outcomes
- Prepare for the Cisco 300-620 DCACI exam
- Build confidence with ACI implementation tasks
- Understand the main ACI objects and policies used in real deployments
- Improve your fit for Cisco ACI implementation roles
Who this is for
- Network engineers preparing for Cisco 300-620 DCACI
- Data center specialists implementing Cisco ACI
- IT professionals who want to strengthen Cisco ACI implementation skills
- Students and practitioners moving toward CCNP Data Center
Before you start
- Basic networking knowledge is required
- Data center infrastructure experience is recommended
- Associate-level Cisco knowledge will help with the ACI terminology and design concepts
Your learning path
7 chapters
Plan your preparation
- Learning hours
- 50h
- With relevant experience
- 5-7 weeks
- Starting from scratch
- 10-14 weeks
- Daily study
- 1-2h
Included in your preparation
- 7 structured chapters covering the exam domains
- 403 practice questions with explanations
- Mock exam practice for timed review
- A practical ACI implementation study path
- Coverage of fabric setup, access policies, tenant policies, and advanced features
1. 第一阶段:ACI 对象模型和 Fabric 初始化(2-3 周)
理解 ACI 的 MIT(Management Information Tree)对象模型层级。练习 APIC 初始化、Fabric Discovery、Switch Profile 和 Interface Profile 配置。Cisco 提供免费 ACI Simulator(需要申请),是练习的最佳工具。
2. 第二阶段:Contract/EPG + 外部集成(2-3 周)
EPG 到 EPG 的 Contract 配置(Provider/Consumer 模型、Filter Entry 定义)。L3Out 外部路由集成(OSPF/BGP/Static Route)。L4-L7 Service Graph(防火墙/负载均衡器插入)。这是考试最难的部分。
3. 第三阶段:Multi-Pod/Multi-Site + 模考(1-2 周)
Multi-Pod(IPN 连接、TEP Pool 规划)和 Multi-Site Orchestrator(MSO)的基本配置。做 2-3 套模考,Contract 和 L3Out 配置题是丢分重灾区。
Career value
ACI 是 Cisco 在 SDN 数据中心市场的主力产品,全球部署量超过 5 万套。金融、电信、大型企业的数据中心改造项目中 ACI 是常见选项。
适合考的人:在 ACI 环境中工作或即将参与 ACI 部署项目的 DC 工程师。Cisco 合作伙伴的 DC 专业化认证通常要求有 DCACI 持证人。
不适合考的人:使用 VXLAN EVPN(非 ACI 模式)或 VMware NSX 做数据中心网络的人。
- 澳洲
- AUD 130,000 – 175,000
- 美国
- USD 115,000 – 160,000
- 新加坡
- SGD 95,000 – 145,000
Preparation tips
Common mistakes
- **用传统 ACL 思维理解 Contract** — ACI 是白名单模型,默认 deny-all。Contract 定义的是"允许什么流量",方向是 Consumer → Provider。这和传统 ACL 的 deny/permit 列表逻辑不同。
- **L3Out 配置步骤不熟** — L3Out 涉及 Node Profile → Interface Profile → External EPG 多层配置,考试给半成品让你补全剩余配置。
- **忽略 ACI REST API** — 约 5% 的题考 APIC REST API 调用(用 JSON/XML 配置对象),不能完全不准备。
Before you register
How difficult is the 300-620 exam?
The exam is 120 minutes long. A systematic preparation period of 3-6 months is recommended. Through the systematic practice in this course, you can effectively improve your pass rate.
How much does the exam cost?
The 300-620 exam costs $330 USD. The certification is valid for 3 years.
Learner experiences
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ACI 的思维方式和传统网络完全不同 — 先定义 EPG 和 Contract(应用策略),再绑定物理端口。考试里 Contract 的 Provider/Consumer 方向问题至少出了 8 道。一定要在 ACI Simulator 上多练。
W. Chen
DC 工程师 @ MSP · 815/1000 · 7 weeks
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