CCIE Routing and Switching Written Exam Guide: Status, Scope, and a Safer Preparation Plan
The CCIE Routing and Switching Written v5.1 exam, identified as 400-101, assessed whether candidates could configure, validate, troubleshoot, and reason about complex enterprise network infrastructure. It is no longer the route to a new certification: Cisco replaced the prior path with the current CCIE Enterprise Infrastructure qualifying exam structure. This guide helps legacy candidates interpret old study material correctly, avoid relying on retired-exam dumps, and decide whether to study historical content or move to the current certification track.
Is CCIE Routing and Switching Written still available?
No. The CCIE Routing and Switching Written path is retired for new certification use. Cisco announced that the prior qualifying exam would be replaced after February 24, 2020, and its retired-exam policy states that retired exams are no longer available for certification or recertification.
That status changes the correct preparation decision. A candidate seeking a current expert certification should not schedule study around 400-101 or treat an old blueprint as a current exam contract. The relevant current direction is CCIE Enterprise Infrastructure, which requires a written core exam and a hands-on lab exam.
Old material can still have educational value when it explains routing, switching, enterprise design, configuration logic, or troubleshooting. Its value is technical background, not evidence that the retired exam can still be booked or that its question content represents the current assessment.
What happened to the old qualification path?
Cisco stated that the CCIE Enterprise Infrastructure qualifying exam would go live on February 24, 2020, replacing the prior CCIE Routing and Switching written-exam path. Cisco also stated that the CCIE Routing and Switching Written v5.0 exam would be replaced by ENCOR 350-401 after that date.
The practical implication is that “CCIE Routing and Switching Written” is now a historical exam reference. If a training page, study file, or marketplace listing presents 400-101 as an active exam, verify it against Cisco’s current certification and retired-exam pages before spending money or arranging a test appointment.
What did the 400-101 exam validate?
The v5.1 exam assessed more than isolated command recall. Cisco described it as validating expertise in configuring, validating, and troubleshooting complex enterprise network infrastructure, along with understanding how infrastructure components interoperate and how functional requirements become specific device configurations.
That emphasis favors candidates who can connect cause and effect. A useful study session should therefore move from a requirement to a design choice, from a design choice to configuration, and from configuration to verification. Memorizing a command without understanding the operational result is a weak match for the capability Cisco described.
Who was the exam aimed at?
The exam was intended for experienced enterprise-networking professionals pursuing the historical CCIE Routing and Switching track. Cisco’s current CCIE Enterprise Infrastructure page says there are no formal prerequisites for that current certification, while recommending five to seven years of relevant enterprise-networking experience.
Those statements should not be confused. The current recommendation is useful context for judging readiness, but it does not establish a prerequisite for the retired 400-101 exam. In either case, candidates should evaluate whether they can reason across multiple network functions rather than measuring readiness by familiarity with a list of commands.
What capability should a candidate look for?
A strong readiness signal is the ability to explain why a network behaves as it does, identify the layer or component responsible, select a corrective action, and validate the result. That sequence reflects the exam’s stated focus on configuration, validation, troubleshooting, interoperability, and translating requirements into device configurations.
A weaker signal is completing a set of recalled questions while being unable to reproduce the underlying behavior in a lab or explain why an alternative configuration would fail. Use practice questions, if at all, as prompts for investigation—not as a substitute for technical understanding.
What did the historical blueprint actually show?
The published v5.1 blueprint allocated 10% to the Network Principles domain and 13% to the Network Troubleshooting domain. Cisco described the blueprint topics as general guidelines, warned that related topics could also appear, and noted that the guidelines could change without notice.
These two published weights can help organize historical study, but they should not be treated as a complete current outline. Do not infer unlisted percentages, a passing score, or the present-day content of the replacement exam from the old document.
How should the Network Principles allocation affect study?
Give Network Principles enough attention to support every later decision. Review how forwarding, addressing, routing behavior, control-plane operation, and infrastructure relationships produce observable outcomes. The goal is not to isolate fundamentals from advanced work; it is to use fundamentals to diagnose advanced failures.
A practical exercise is to take a network requirement and write down the expected path, control-plane dependency, failure symptom, and verification evidence before touching a device. This exposes gaps that command memorization can hide. The 10% figure belongs specifically to the Network Principles domain and should not be reused as a general estimate for other areas.
How should the Network Troubleshooting allocation affect study?
Network Troubleshooting received 13% in the v5.1 blueprint, making fault isolation a defined part of the historical assessment. Build practice around disciplined diagnosis: establish the intended behavior, gather relevant evidence, narrow the fault domain, make the smallest justified change, and verify recovery.
Avoid jumping directly to configuration changes. For each lab fault, record the symptom, the evidence that supports your hypothesis, the evidence that would disprove it, and the validation command or observation that confirms the fix. The 13% figure applies to Network Troubleshooting, not to the blueprint as a whole.
What did Evolving Technologies mean for old materials?
The v5.1 blueprint included the Evolving Technologies v1.1 domain and applied to written exams scheduled on August 30, 2018, and afterward. This is a historical scope marker, not a reason to assume that an old technology list remains current.
When reviewing archived notes, label every topic by exam version and publication date. Separate durable principles from version-specific product behavior, terminology, or feature coverage. That simple separation reduces the risk of carrying obsolete assumptions into preparation for the current CCIE Enterprise Infrastructure path.
What were the historical delivery details?
The v5.1 written exam was a closed-book, two-hour test containing 90–110 questions, and it did not allow outside reference materials. These details describe the historical exam documented by Cisco; they should not be used to infer the delivery format of the current replacement exam.
Because the old test was closed book, preparation needed to build recall alongside reasoning. A candidate could consult documentation while learning, but should finish practice by explaining configurations and troubleshooting decisions without external references. That recommendation remains useful for technical mastery even though the retired exam itself is unavailable.
How should you interpret old practice sets?
Treat an old practice set as a diagnostic tool for concepts, not as a replica of an available exam. Check each question against Cisco documentation and the version of the blueprint it claims to represent. Discard material that has no identifiable source, makes guarantees, or presents unverifiable “real questions.”
Do not use dumps, leaked-question claims, or memorization services as a readiness standard. They cannot establish that a candidate can configure, validate, troubleshoot, or translate requirements into working infrastructure. They also encourage preparation for an exam that Cisco no longer offers.
What should you do with the two-hour and question-range information?
The historical two-hour duration and 90–110 question range can help explain why the old exam demanded concise reasoning and efficient reading. They are not scheduling information for a current candidate, and they do not justify inventing a target pace for another exam.
If you are studying archived content for professional development, use timed concept drills only after you understand the material. First seek accurate reasoning; then improve speed without replacing analysis with guessing.
Should you study the old blueprint or the current certification?
If your goal is a current Cisco expert certification, begin with the current CCIE Enterprise Infrastructure certification and its current exams-and-training information. If your goal is to understand a historical qualification, use the archived 400-101 blueprint as a bounded reference and clearly label it as retired.
This decision should happen before building a study calendar. Otherwise, a candidate can spend weeks optimizing for historical topic wording, delivery details, or practice questions that no longer govern an available certification route.
Decision path for a current certification candidate
Start at Cisco’s current CCIE Enterprise Infrastructure pages. Confirm the current core exam, lab or practical requirement, official blueprint, and any current delivery information there. Cisco describes the expert-level path as using an online-capable core exam plus an eight-hour, in-person, hands-on lab or practical exam.
The current certification requires passing both a written core exam and a hands-on lab exam. Plan preparation as two connected tracks: broad technical understanding for the core exam and configuration, validation, and troubleshooting practice for the lab. Do not transfer the retired 400-101 schedule or question format into that plan.
Decision path for a historical-study project
If you are comparing certification versions, researching a legacy credential, or strengthening routing-and-switching fundamentals, use the Cisco v5.1 blueprint and its stated learning objectives as historical evidence. Mark concepts that remain technically useful, then verify current implementation details from current Cisco documentation before applying them.
This approach preserves the value of the older material without suggesting that 400-101 is a live option. It also makes your notes easier to update when platform behavior, terminology, or certification requirements change.
How should you build a practical study sequence?
Use a dependency-based sequence rather than moving randomly through topic names. Establish principles first, connect them to configuration and interoperability, then spend substantial time validating and troubleshooting complete scenarios. For a current certification, replace the historical blueprint with Cisco’s current official exam outline before assigning study time.
A useful roadmap has four phases: scope confirmation, foundation repair, integrated practice, and readiness review. Each phase should produce evidence of understanding, not merely a larger collection of notes.
Phase one: confirm the target before studying
Write down the exact certification and exam you intend to pursue. Check Cisco’s current certification page and exam information, then compare every third-party course, video, question bank, or lab against that target. Remove resources that identify only CCIE Routing and Switching Written 400-101 if your goal is the current certification.
For historical study, record that the v5.1 blueprint included Network Principles, Network Troubleshooting, and Evolving Technologies v1.1. Record its publication context separately from current exam requirements. This prevents an old reference from silently becoming your study plan.
Phase two: repair the reasoning foundation
Review the mechanics behind forwarding, routing, switching, addressing, control-plane behavior, and infrastructure dependencies. For each subject, answer four questions: what is the intended behavior, which component controls it, what evidence shows failure, and how is the result validated?
Use small configurations to test one relationship at a time. When the result differs from your expectation, investigate the discrepancy rather than immediately copying a correction. The purpose is to build a transferable troubleshooting model that supports both written reasoning and hands-on work.
Phase three: integrate configuration with verification
Build scenarios that begin with a functional requirement and end with verified behavior. Decide what the network must do, identify the relevant components, implement the configuration, inspect the resulting state, and test normal and failed paths.
Keep a change record. Note the requirement, assumptions, commands or configuration choices, expected output, actual output, and corrective action. This directly practices the translation from functional requirements to device configurations described in the historical exam scope.
Phase four: practice fault isolation
Introduce one deliberate fault at a time, then later combine faults only after single-fault diagnosis is reliable. Start with symptoms rather than labels: a missing route, an unexpected path, a failed adjacency, inconsistent reachability, or a policy result that does not match the requirement.
Require yourself to gather evidence before changing anything. A good practice result includes not only the final fix but also the rejected hypotheses and the validation that proves recovery. This is more useful than counting how many lab tasks were completed.
Phase five: review and make the next decision
At the end of each study cycle, classify weaknesses as knowledge gaps, configuration errors, interpretation errors, or verification failures. Each category needs a different response: targeted reading, a smaller lab, a written explanation, or a repeatable validation checklist.
For the current CCIE Enterprise Infrastructure route, confirm that your study plan covers both the current core exam and the hands-on lab requirement. For the retired exam, stop treating additional 400-101 practice as progress toward a new credential and redirect effort to the current official path or to clearly defined technical learning goals.
Which preparation mistakes waste the most time?
The most damaging mistake is preparing for the wrong exam. A second is treating a blueprint as a promise of exact questions. Cisco explicitly described the v5.1 topics as general guidelines and noted that related topics could appear, so preparation should develop connected understanding rather than narrow recall.
Other common errors include ignoring troubleshooting, studying configurations without validation, trusting unsupported question claims, and failing to distinguish historical facts from current requirements. Each error can be corrected by tying every study activity to an observable technical outcome.
Mistake: confusing eligibility with readiness
The current CCIE Enterprise Infrastructure certification has no formal prerequisites, but Cisco recommends five to seven years of relevant enterprise-networking experience. Neither statement proves that a candidate is ready. Readiness should be judged by what the candidate can explain, configure, verify, and troubleshoot under the conditions of the current target exam.
Use experience as context, not as a substitute for assessment. A long job history may contain little hands-on routing work, while a newer engineer may have strong laboratory discipline. Review actual capabilities and the current official scope.
Mistake: studying only visible commands
Command familiarity is useful only when connected to behavior. For every command or configuration pattern, identify its purpose, dependencies, expected operational state, failure symptoms, and verification method. If you cannot explain those links, the item belongs in a learning queue rather than a memorization queue.
This method also helps identify interoperability problems. A configuration can be syntactically correct and still fail to satisfy the requirement because another component, policy, protocol, or operational state is inconsistent.
Mistake: treating question exposure as proof
A high score on recalled questions does not prove the ability to solve unfamiliar scenarios. It may only show recognition of wording. Use questions to reveal what you do not understand, then reproduce the concept in a lab, diagram the dependency, or explain the troubleshooting path in your own words.
Avoid any resource that promises guaranteed success through dumps or claims to contain live exam items. No supplied Cisco source supports such a guarantee, and the retired status of 400-101 makes those claims especially unreliable.
What should you do next?
First, decide whether your objective is a current CCIE Enterprise Infrastructure certification or historical study of CCIE Routing and Switching Written. Then verify the target on Cisco’s official pages, remove retired-exam assumptions from your calendar, and choose resources that match the confirmed exam version.
For a current candidate, build a plan around the current core exam and hands-on lab requirement. For a legacy-content learner, use the 400-101 blueprint to organize concepts while treating its delivery details and topic allocations as historical. In both cases, make configuration, validation, and troubleshooting evidence the center of preparation.
A short action checklist
1. Confirm the target certification and current exam name on Cisco’s official site.
2. Treat 400-101 as retired rather than as a live scheduling option.
3. Replace archived scope with the current official blueprint when pursuing certification.
4. Use historical Network Principles and Network Troubleshooting allocations only for historical analysis.
5. Build labs that begin with requirements and end with verified behavior.
6. Keep a fault log showing evidence, hypotheses, changes, and validation.
7. Reject dumps and leaked-question claims as preparation shortcuts.
8. Recheck Cisco’s official exam information before booking or finalizing a study plan.
Sources and scope note
This guide separates Cisco’s documented facts from practical preparation recommendations. Historical figures and delivery details refer specifically to the CCIE Routing and Switching Written v5.1 material supplied for this article. Current certification statements refer to Cisco’s current CCIE Enterprise Infrastructure pages and should be rechecked before scheduling because exam information can change.
The article does not reproduce exam questions, claim access to live content, or treat third-party dumps as evidence of exam coverage. Official Cisco sources are the authority for current availability, requirements, blueprints, and delivery information.
Conclusion
CCIE Routing and Switching Written 400-101 is useful as a historical technical reference, but it is not the current certification route. The sensible next step is to identify the certification you actually want, confirm its live Cisco requirements, and study through connected practice: understand the requirement, configure the infrastructure, validate the result, and troubleshoot the failure. That approach remains valuable even as exam names, blueprints, and delivery models change.
