How I Passed the CCIE EI on My First Try in Four Months

My Background

WOLF-LAB was the third training provider I enrolled with. My first two programs focused on Huawei technologies, and I had never studied or worked with Cisco before. I eventually chose WOLF-LAB because network engineers in Mr. Wang's professional circle kept recommending it by word of mouth. Having studied with three different providers, I think I have a pretty good basis for judging which one delivers.

I changed careers and became a network engineer in early 2020, and I've worked in networking ever since. I still remember interviewing for a network engineering job at a bank when I was just starting out. The interviewer asked what I did in my previous role. I'd dressed up my resume a little, so I said something like, "I tested network cable connectivity and changed STP priorities."

A senior manager sitting to the interviewer's right stood up and started pacing. He told me, "The network is critical to our business, so honesty has to come first. A lack of honesty can cause serious problems. Technical skills can be learned and built over time." In my head, I was thinking, "Why is this guy giving me a lecture? I'm being honest." Of course, I answered politely in the room.

After the interview, I sat down on a bench by the road and searched online for information about STP. That was when I realized how clueless I'd sounded.

Later, at work, my manager asked me to connect a laptop and a network cable to more than ten H3C access switches, test whether Telnet and SSH were working, and reset the passwords on several switches. I panicked because I had no idea how to do any of it. Online searches didn't give me what I needed at the time. I ended up getting chewed out, and then my manager had to walk me through the work step by step.

Looking back after several years in the field, I don't think I would have struggled with those basic tasks if I'd started with WOLF-LAB. Their CCNA and CCNP level courses already cover a lot of practical work. Traffic mirroring is one example. Neither of my previous training providers taught it at all.

You could argue that anyone can look these things up online or learn them when a job requires them. But how is a newcomer supposed to know which skills they should be learning in the first place? Without an instructor pointing you in the right direction, there's a real opportunity cost. It might take years before you happen to encounter some of these situations at work. Network engineers aren't doing new projects or major production cutovers every day.

My CCIE EI Preparation

A friend and I contacted WOLF-LAB and enrolled in the CCIE EI course on March 21. I passed the 350-401 core exam on May 6 and passed the CCIE EI lab on July 29. I also lost almost half of June to other commitments and couldn't focus on studying during that time.

My point is that the preparation period doesn't have to be very long if you have a clear goal and really commit to it. A lot of people stretch the process out because fear of the unknown makes them put things off.

WOLF-LAB has a large CCIE study group, and instructors Yue, Jin, and Yang also set up a smaller group specifically for each student. Help was available almost around the clock. If the instructors were busy, other students in the main group were quick to help, including many people who had already passed the lab. The study atmosphere was intense in a good way. The instructors and other students consistently answered my questions, and I passed both the written exam and the lab on my first attempt within a short period of time. That says a lot about the support and its quality.

You also need momentum. During CCIE prep, most working professionals can't realistically study several unrelated technologies, prepare for something like IELTS, and still move quickly toward the CCIE at the same time. If the goal isn't clear, the follow-through won't be there.

Buddhism has a concept called discipline, concentration, and wisdom. I adapted that idea for my own preparation: have the courage to cut out things that interfere with the goal, keep your mind steady, and give yourself the focus you need to learn.

For anyone preparing while working full time, taking the CCIE classes is the foundation. What I really want to explain, though, is how I approached the final lab preparation.

For the DOO section, the main requirement is simple: repetition until the work becomes second nature. It doesn't take endless analysis once you've practiced enough. WOLF-LAB gives you the material you need to handle the lab exam.

DOO has three parts, and one important milestone is being able to complete all three in a single run. That means booking enough rack time and working through the entire sequence as efficiently as possible. It may sound obvious, but when most people first start practicing, they can't even finish typing the reference configurations for Part 1 within a session. A full run is genuinely difficult at the beginning, and that can quickly drain your motivation.

My solution was to use time outside my rack sessions, including downtime at work, to type out the Part 1 configurations in a text file. If something was unfamiliar, I'd type it several times. You don't have to use valuable rack time just to become familiar with the commands. Working professionals can practice the configuration text separately, watch the lab videos when something doesn't make sense, and look up the underlying concepts.

Rack availability was never a problem. There were plenty of sessions, and if I needed more time, I could ask Jin to extend it. Once I was on the rack, I focused on getting Part 1 down first.

Part 2 was confusing the first time around, especially the SDN portion in DOO 2. At first, I couldn't see the logic behind it. Once I was comfortable with Part 1, I started skipping it during some rack sessions. I would establish the routing needed for Part 2, then configure that section while following the lab video. This let me complete Part 2 once during each rack session. Later, I could run through it several times in a single session. After two full practice runs, the logic started to make sense.

For someone working full time, two consecutive weekend days with booked rack sessions can be enough to get comfortable with DOO if you practice this way. You don't have to keep postponing the exam. Consistency needs one reason; hesitation can always find a dozen excuses. Don't give yourself that opening.

The Design section required much less time. Three to five days of focused preparation was enough for me. Once I saw it on exam day, it felt very familiar and straightforward.

Before the Exam

During the final two days before the exam, Jin repeatedly reviewed the DOO work I'd completed on the back end and pointed out issues in our small study group. One example involved passing a loopback interface as a Python parameter through EEM. I had a habit of writing "loopback" with a lowercase l, but he insisted that I change it to "Loopback" with a capital L. On the actual exam, the task used "Loopback" exactly that way.

It's easy to dismiss details like that as unimportant. But if you say that about every small issue, those little mistakes can add up and cost you the exam. The same applied to Python scripts. The instructors told us not to use the Tab key and to use four or eight spaces consistently. I wrote my script once during the exam, and it ran without any problems.

I collected every correction from the instructors in a text file. On the subway to the testing center, I read the list aloud several times. Yang also sent me a detailed set of exam-day reminders that helped me avoid a lot of common mistakes.

Exam Day in Beijing

The Cisco proctors in Beijing were excellent, just as other students in the group had said. They didn't add to the pressure at all. If anything, they helped me relax.

When I opened the first Design task and confirmed which version I had, I immediately thought, "I've got this." I still stayed there for about two hours instead of rushing. When I opened the DOO section, read the requirements, and checked everything, I had the same feeling. Then I reminded myself not to celebrate early and to keep working carefully.

When I reached DMVPN, the neighbor relationship wouldn't come up. I lost some time, started getting nervous, and eventually became frustrated because I couldn't see why it was failing.

The instructors had told us that if we became anxious during the exam, we should step away, go to the restroom, clear our heads, and then come back. That advice really works. I didn't go to the restroom, but I did get up and walk around the room. I stood by the window, looked into the distance, paced back and forth, and quietly talked myself through the problem. I probably looked like I was casting a spell, but it helped me organize my thoughts.

I knew the configuration itself should have worked. Then I remembered an instructor's warning that passwords could cause problems. At first, the password shown on the hub side made me think the spoke password used the same "word" format. It actually used the "line" format, which was sensitive to spaces. When I copied the password from a text file into the CLI, I had accidentally included an extra space. That prevented IPsec from coming up. I corrected the password, and the tunnel came up immediately. I could finally breathe again, and the rest of the exam went smoothly.

When I finished, I reviewed the areas my instructors had emphasized and checked the error list I'd built during practice. First, I made sure I hadn't skipped any tasks or answered the wrong question. There's no point feeling proud of work that doesn't match what the exam asked for.

That final review caught two mistakes. On R5, I had written Permit in an ACL that required Deny. I also found an error in the redistribution configuration. Catching those two details reinforced everything the instructors had told me about careful review.