About This Article
This article was created using an automated generation workflow leveraging generative AI. It reviews Microsoft's tracert documentation and IP/ICMP specifications, organizing how to read the output for troubleshooting purposes.Verification Status: Official specifications confirmed, actual path measurement not performed
Windows tracert starts with a small TTL and increments it, using the response when the TTL expires along the way to estimate the hops. The displayed path is an observation result at that moment, not a fixed network map.
Try This First
tracert -d example.com
-d skips name resolution, making it easier to observe changes in IP addresses and hops quickly.
What to Look For
Check for the increase in hops line by line (line 1, line 2, etc.), response times, and where * appears. Do not conclude that a router is faulty based solely on timeout asterisks, because some network devices do not return or limit ICMP responses.
TTL Increment Mechanism
sequenceDiagram participant P as PC participant R1 as Router1 participant R2 as Router2 participant S as Server P->>R1: TTL=1 R1-->>P: Time Exceeded P->>R2: TTL=2 R2-->>P: Time Exceeded P->>S: TTL=3 S-->>P: Echo Reply
For Professional Use
For inquiries such as "accessible within the corporate network but slow via VPN" or "difficulties reaching SaaS from a specific site," tracert serves as useful material to check routing differences after ping. Mask personal IP addresses or internal router names before sharing them externally. Additionally, because network paths fluctuate, record them alongside the failure timestamp, execution source, and destination.
Official and Primary Sources
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2026年9月26日
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