看 VPS 测评总提”三网回程”，这是判断线路好坏的关键，但很多人搞反了方向。
一句话解释
- 去程 = 数据从你这边发到服务器的路（上行）。
- 回程 = 服务器把数据送回你这边的路（下行）。
- 三网 = 电信、联通、移动，因为中国三家运营商线路各不同，要分别看。
为什么回程更重要
你日常的体验——网页加载快不快、视频卡不卡、下载顺不顺——主要由回程决定（绝大多数是服务器往你这边发数据）。所以看测评，重点看”三网回程”分别走的什么线。
怎么看
在服务器上对你家三网各做一次 traceroute，看回程路由的运营商和 ASN（如 CN2 GIA 会出现 59.43.x.x）。
提醒
有的机器去程很好、回程缩水，标称”CN2″却只去程 CN2——一定看清回程。各条线路含义见 CN2 GIA / AS9929 / CMI。
想直接挑好线路的在售机型？去 库存监控 按线路筛选。
VPS reviews always mention “return routes for China’s three carriers” — this is the key metric for judging network quality, yet many people have the direction backwards.
In a Nutshell
- Forward route (outbound) = the path data takes from your device to the server (upload).
- Return route (inbound) = the path data takes from the server back to your device (download).
- Three carriers = China Telecom, China Unicom, and China Mobile — each uses different network paths, so you need to check each one separately.
Why Return Routes Matter More
Your day-to-day experience — how fast pages load, whether video buffers, how smoothly downloads run — is primarily determined by the return route (since most traffic flows from the server toward you). So when reading reviews, focus on what network line each carrier’s return route uses.
How to Check
From the server, run traceroute toward each of the three carrier destinations and look at the ISP and ASN in the return path (for example, CN2 GIA routes will show hops at 59.43.x.x).
Heads Up
Some VPS plans have good forward routes but cut corners on the return — advertised as “CN2” but only the outbound is CN2. Always verify the return route explicitly. For what each route label means, see CN2 GIA / AS9929 / CMI.
Want to find plans with strong route quality right now? Go to the stock monitor to filter by route.
发表回复