Case Studies案例研究 / Household Cases家庭视角案例
New Router, No Internet: the Failing ONT in Rosebery
换了新路由器却上不了网：Rosebery罢工的光猫
Rosebery · ApartmentRosebery · 公寓Opticomm · SuperloopOpticomm · SuperloopRouter upgrade路由器升级ONT fault光猫故障
Upgrading your plan or router and suddenly having no internet at all is one of the most common calls we get. The router usually gets the blame; it's usually not the router.
升级套餐或换了新路由器之后彻底没网——这是我们接到最多的求助之一。大家通常都怪新路由器，但问题通常不在路由器。
The case
案例经过
A UNSW postgrad in an older Rosebery apartment ordered a Superloop gigabit plan and bought a new router to match. Nothing worked. He'd done careful homework — even swapped the power adapter on the wall unit. On-site, we confirmed the router and plan were fine: the aging wall-mounted Huawei ONT (fibre terminal common in older Opticomm buildings) had simply reached end of life. We coordinated the replacement, then configured the router properly for the building's network.
一位住在Rosebery老公寓的UNSW研究生，办了Superloop千兆套餐并配了新路由器，结果完全连不上。他自己排查得很仔细，甚至换过墙面设备的电源适配器。上门后我们确认路由器和套餐都没问题：问题出在墙上那台服役多年的华为光猫（Opticomm老楼常见的光纤终端），它彻底寿终正寝了。我们协调更换设备，然后按楼栋网络正确配置了路由器。
The pattern
这类问题的规律
If only one device connects, or every device shows 'connected, no internet' after an upgrade, suspect the chain in this order: ONT/wall equipment → ISP provisioning → WAN settings → then the router itself. A Perth student with the same symptom (only one device online on a brand-new TP-Link) was fixed entirely over a late-night video call.
如果升级后只有一台设备能上网，或所有设备都显示"已连接但无互联网"，按这个顺序怀疑：光猫/墙面设备 → 运营商放号 → WAN设置 → 最后才是路由器本身。珀斯一位同学遇到一模一样的症状（全新TP-Link只有一台设备在线），深夜通过视频通话就远程解决了。
Result最终结果
ONT replaced, gigabit line verified at full speed, every device back online.
光猫更换后千兆线路跑满验证，全部设备恢复在线。