Cisco CCNP Data Center Troubleshooting Cisco Data Center Infrastructure (300-615 DCIT)
Practice for the Cisco CCNP Data Center Troubleshooting Cisco Data Center Infrastructure exam with 86+ explained questions, mock exams, and troubleshooting-focused review.
Nexus 数据中心环境的高级故障排除考试 — 真正在排障岗位上的 DC 工程师考这个最实用。
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What this certification covers
This page is structured for quick scanning first: exam format, fit, prep time, and the actual study scope.
300-615 DCIT（Troubleshooting Cisco Data Center Infrastructure）是 CCNP Data Center 的故障排除专项，60 题 / 90 分钟。和 DCID（设计）互补，DCIT 专注于"东西坏了怎么修"。
考试覆盖 Nexus 交换机故障排除（vPC peer-link 故障、HSRP/VRRP 切换异常）、VXLAN EVPN 排障（BGP EVPN 邻居建立失败、VTEP 不通）、ACI 故障排除（Fault/Health Score 分析、EPG 通信异常）、SAN 存储网络排障（FC zone 配置错误、FLOGI 失败）。
约 40% 的题以 show 命令输出为题干 — 给你一段 show vpc、show nve peers 或 show system internal 的输出，问你故障原因和修复方法。
You will work with
After preparation
- Prepare for the Cisco 300-615 DCIT exam
- Improve your ability to isolate and fix Cisco data center issues
- Work more confidently with Nexus, UCS, SAN, and ACI troubleshooting tasks
- Improve your fit for data center support and operations roles
Exam details
Who should take it
Good fit
- Data center engineers preparing for Cisco 300-615 DCIT
- Support engineers who troubleshoot Cisco infrastructure
- IT professionals who want stronger troubleshooting skills in Cisco data centers
- Students and practitioners moving toward CCNP Data Center
Before you start
- Basic networking knowledge is required
- Hands-on experience with data center infrastructure is recommended
- Associate-level Cisco knowledge will help with the terminology and troubleshooting flow
Is it worth it? Career value
Salary ranges, target job titles, and the real career impact of holding Cisco DCIT.
DC 故障排除是一线运维的核心技能，DCIT 的实用性在 CCNP DC 所有专项中排第一。银行和电信的 DC 团队在招人时经常把 DCIT 作为加分项。
适合考的人：日常工作就是在 Nexus 环境里排障的 DC 工程师，有 vPC 和 VXLAN 实操经验。
不适合考的人：没有 Nexus 实操经验的人 — 考试全是 show 命令输出分析，没实操背景根本看不懂。
Study preparation
With hands-on AWS
From scratch
Daily pace
Learning path preview
5 chaptersStep-by-step preparation
A concrete week-by-week plan from past test-takers — not generic advice.
第一阶段：Nexus 平台排障基础（2 周）
vPC 排障（peer-link down、type-1 consistency check 失败、orphan port 处理）。NX-OS 的 show tech-support、show system internal、ethanalyzer 等诊断工具。
第二阶段：VXLAN EVPN + ACI 排障（2-3 周）
VXLAN EVPN 的 BGP EVPN neighbor 建立失败排查（show nve peers、show bgp l2vpn evpn）。ACI 的 Fault 和 Health Score 系统、moquery 命令、APIC 日志分析。
第三阶段：SAN 排障 + 模考（1-2 周）
FC SAN 的 FLOGI/PLOGI 过程、zone 配置错误排查、MDS 交换机的 show flogi database。做 2 套模考，训练从 show 命令输出快速定位故障点的能力。
Real test-taker experiences
What it actually took for real candidates to pass — prep time, scores, and lessons learned.
日常工作就是排 Nexus 的障，考起来相对轻松。最意外的是 SAN 排障题比预期多 — FC zone 和 FLOGI 至少出了 4 题。如果没碰过 MDS 交换机，这部分要专门补。
Certification comparison
| Cisco DCIT | Cisco DCCOR | Cisco DCID | |
|---|---|---|---|
| Provider | Cisco | Cisco | Cisco |
| Level | 专业级 | 专业级 | 专业级 |
| Fee | $330 | $330 | $330 |
| Duration | 120 min | 120 min | 120 min |
| Question count | 65 | 65 | 65 |
| Validity | 3 yrs | 3 yrs | 3 yrs |
Study tips and common mistakes
**忽略 SAN 排障** — 很多人只准备 LAN 部分，但 FC SAN 占约 15-20% 权重，MDS 的 show flogi database 和 zone 配置排错必考。
**不熟悉 NX-OS 诊断命令** — show system internal 系列命令在真考中出现频率很高，不是日常用的 show interface 那些。
**ACI Fault Code 不认识** — ACI 的 F 开头故障码（如 F0467 表示 EPG 无端口绑定）要能快速判断故障类型。
FAQ
Frequently Asked Questions
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