Case Studies案例研究 / Latest Case最新案例 A Loft One Floor Above the Router: 20-30 Mbps on a Phone, Full 100 Mbps After a Wired Run to an eero Pro 6E (Waterloo)
Loft在楼上、路由器在楼下：手机只有二三十兆，走一段网线接eero Pro 6E后跑满百兆（Waterloo）
Student · Waterloo学生 · WaterlooOccom 100 MbpsOccom 100兆DSL connectionDSL联网Loft above the routerLoft在路由器楼上20-30 Mbps upstairs楼上只有二三十兆Wired run to a second router有线延伸到第二台路由器
The layout was the whole problem. The router lived downstairs, the student lived in the loft upstairs, and a phone speed test up there came back at 20-30 Mbps on a 100 Mbps plan. Gaming on a tablet was unstable. Nothing was broken — the signal simply had a floor to get through, and the fix was to stop asking it to.
问题全部出在户型上。路由器在楼下，这位同学住在楼上的 loft，在楼上用手机测速，100 兆的套餐只跑出二三十兆，平板打游戏也不稳定。其实什么都没坏——无线信号只是要穿一层楼板，而解决办法，就是不再让它穿。
Why we did not just buy a better router
为什么没有直接换一台更好的路由器
The instinct in this situation is to replace the router with a faster one. On this line that would have been money spent for very little.
The connection here is DSL on a 100 Mbps plan. That is the ceiling. A high-end router on the same line still delivers 100 Mbps at best — its stronger wireless hardware cannot manufacture speed that the line does not carry. So we left the existing TP-Link exactly where it was, doing the one job it is needed for: making the connection. Everything else moved upstairs.
遇到这种情况，第一反应往往是换一台更快的路由器。但在这条线路上，那笔钱花下去几乎没有意义。
这里是 DSL 接入、100 兆套餐，这就是天花板。同一条线上换一台高端路由器，最好也还是 100 兆——更强的无线硬件造不出线路本身没有的速度。所以我们把原来那台 TP-Link 原地留下，只让它做它必须做的那一件事：拨号联网。其余的都搬到楼上去。
Where the speed was lost速度是在哪一段丢掉的
Occom 100M planOccom 100兆套餐
100
→
DSL router downstairs楼下DSL路由器
100
→
WiFi through the floor无线穿楼板
20-30
Bottleneck瓶颈
→
Phone in the loftloft里的手机
20-30
Everything up to the router was delivering the full plan speed. The loss happened in one place: the wireless hop from a router downstairs to a room upstairs. Building materials between floors absorb a lot of signal, and no setting on the router changes that. The only real options are to move the signal closer or to carry it up the stairs on a cable — and a cable does not care what the floor is made of.到路由器为止，每一段都跑着套餐的完整速度。丢失只发生在一个地方：从楼下路由器到楼上房间的那一跳无线。楼板材料会吸收掉大量信号，而路由器上没有任何一个设置能改变这件事。真正可行的只有两条路——把信号搬得更近，或者用一根网线把它送上楼；而网线不在乎楼板是什么做的。
Before and after, upstairs
楼上的处理前后
Upstairs in the loft · before vs afterLoft楼上 · 处理前 vs 处理后
Before (WiFi from downstairs)处理前（楼下WiFi）
After (eero in the loft)处理后（eero放在loft）
4×faster upstairs on the same 100 Mbps plan — the plan never changed, the signal just stopped crossing a floor.同样的100兆套餐，楼上快了约4倍——套餐一点没变，只是让信号不用再穿楼板。
What we did on site
现场做了什么
What we did on site现场做了什么
1
Went through the layout and offered a few options结合现场户型给出几种方案
Wired run chosen最终选有线延伸
2
Left the existing TP-Link doing the DSL connection only原TP-Link只保留拨号联网的角色
No need to replace it不必换掉它
3
Ran a 10 m cable from its LAN port up to the loft从LAN口拉一根10米网线上到loft
Signal carried by cable信号走网线上楼
4
Set up an eero Pro 6E in the loft room在loft房间装好eero Pro 6E
Online after configuration配置后联网成功
5
Cabled the desktop from the eero, then retested everything再用网线把电脑接到eero，逐台复测
Phone, tablet, PC all near 100 Mbps手机平板电脑基本跑满百兆
6
Walked through the eero app with the student带同学过了一遍eero的手机APP
Can change WiFi and see devices可改WiFi、查看设备与流量
The two approaches side by side
两种做法的对比
Two ways to fix a floor between you and the router楼上楼下，两种做法
| Buy a better DSL router换一台更好的DSL路由器 | Wired run to a second router有线延伸到第二台路由器 |
|---|
| Ceiling on this line这条线路的上限 | Still 100 Mbps — DSL caps it依然是100兆——DSL就这个上限 | Still 100 Mbps, but delivered upstairs同样100兆，但送到了楼上 |
| The floor in between中间那层楼板 | Still there, still absorbing signal还在，照样吸收信号 | Bypassed by the cable被网线绕过去了 |
| Where the WiFi comes fromWiFi从哪里发出 | Downstairs, same as before还是楼下，和原来一样 | The room you actually use你实际用网的那个房间 |
| If you move house later以后搬家怎么办 | A DSL router is tied to this kind of lineDSL路由器和这类线路绑定 | The second router moves with you第二台路由器可以跟着走 |
| Wired desktop upstairs楼上电脑有线直连 | Not possible without a cable anyway没网线本来就做不到 | Straight out of the eero直接从eero接出来 |
Choosing the second router
第二台路由器怎么选
We put an eero Pro 6E in the loft. On a 100 Mbps DSL line that is more capability than the connection can currently use, and we chose it deliberately.
The student told us they expect to move to a place with a gigabit-capable connection later. Equipment tied to this line stops being useful the moment that happens, while a mainstream mesh-capable router moves house with you and has room to grow into a faster plan. It also comes with a phone app that makes changing the WiFi name, checking which devices are connected and looking at traffic something the owner can do without calling anyone. That last part matters more than a spec sheet on a student's home network.
我们在 loft 里放的是一台 eero Pro 6E。在一条 100 兆 DSL 线路上，它的能力超出了当前接入能用到的范围，而这是我们有意的选择。
这位同学提到，之后搬家会考虑网速能到千兆的地方。和这条线路绑定的设备，一旦搬家就失去意义；而一台主流的、支持组网的路由器可以跟着搬走，也留出了以后升级套餐的余量。它还配了手机 APP，改 WiFi 名称、看有哪些设备连着、看流量，这些事主人自己就能做，不用再找人。对一个学生的家庭网络来说，这一点比参数表更重要。
What we would take from this one
这一单值得记住的几点
- If the router is on another floor, that is usually the whole story. Test in the room you actually use, not next to the router.
- A cable beats a stronger radio. Ten metres of Ethernet up the stairs solves what no amount of wireless tuning downstairs will.
- Know your line's ceiling before you shop. On a 100 Mbps DSL connection, a faster router cannot give you more than 100 Mbps.
- You can keep the old router. Let it handle the connection and let a second unit handle the WiFi in the room you live in.
- If you expect to move to a faster connection, buying a router that is not tied to this line is the more useful choice.
- 如果路由器在另一层楼，那基本上就是全部原因。测速要在你实际用网的房间里测，不是站在路由器旁边测。
- 一根网线胜过更强的无线。十米网线送上楼解决的问题，在楼下怎么调无线都解决不了。
- 买设备之前先搞清楚你这条线路的上限。100 兆 DSL 接入上，再快的路由器也给不了你超过 100 兆。
- 旧路由器可以留着。让它负责联网，让第二台负责你真正住的那个房间的 WiFi。
- 如果预计以后会换到更快的接入，买一台不和当前线路绑定的路由器，是更划算的选择。
Result最终结果
The existing TP-Link stayed downstairs handling the DSL connection. A 10 m cable from its LAN port carried the connection up to an eero Pro 6E placed in the loft room, with a second cable from there to the desktop. On retest the computer, tablet and phone all came back at close to the full 100 Mbps plan speed, and the student tried gaming on each device on the spot and was happy with it. We finished by walking them through the eero app so they can change the WiFi details and see connected devices themselves.
原来的 TP-Link 留在楼下继续负责 DSL 拨号联网。从它的 LAN 口拉一根 10 米网线把网络送上楼，接到放在 loft 房间的 eero Pro 6E 上，再从那里用另一根网线连到电脑。复测时电脑、平板、手机基本都能跑满这条 100 兆套餐，该同学现场分别用几台设备开了游戏体验，结果符合预期。最后我们带他过了一遍 eero 的 APP，之后改 WiFi 信息、看连接设备和流量，他自己就能操作。