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Two Routers, a DSL Cable and Every Guide on the Internet: Untangling a Waterloo Superloop 50M Connection (ZTE)

Student · WaterlooSuperloop 50M fibreZTE routerTangled cablingPPPoEProvider refreshed the service

The plan had been activated a long time before we were called. In between, she had tried everything the internet suggested: a DSL cable, a WAN cable, two routers connected to the modem at the same time, and a set of admin passwords and settings changed along the way. The photos she sent were, by her own description, a mess. That is not a criticism — it is what happens when you follow guides written for someone else's connection.

What we removed before we added anything back
Fibre modem
online
→
Two routers at once
conflicting
Removed first
→
Changed admin settings
unknown state
Removed first
→
Her devices
no internet

Before diagnosing anything we reduced the setup to one path: modem LAN1 straight into the WAN port of a router we knew was good. Everything else came out — the second router, the DSL cable, and the settings changed during previous attempts. You cannot isolate a fault in a network that has two routers and unknown configuration in it. Simplify first, then test.

Find out what your connection type is before you follow any guide

This is the single step that would have saved her the most time, and it costs nothing.

How the visit went

How the visit went
1
Logged into her Superloop account to confirm what the service actually is
Fibre, not DSL
2
Asked support to confirm the fibre equipment was showing as online
Confirmed online
3
Stripped the setup back: modem LAN1 into the WAN port of our own known-good router
Second router and DSL cable removed
4
Set up PPPoE with her account details and tried to connect
Failed — connection dropped
5
Back to Superloop support: they refreshed the service remotely, then everything was powered off and reconnected
Online after a short wait
6
Ran a speed test on-site against the plan she is paying for
About 50 Mbps — matches the 50M plan
The part worth noting is that the correct setup still did not work on the first try.

Before and after · the cabling that mattered

Before and after · the cabling that mattered
BeforeAfter
Connection typeAssumed from online guidesConfirmed as fibre in her own account
Cables in useA DSL cable and a WAN cable, both triedOne cable: modem LAN1 to router WAN
Routers connectedTwo at the same time behind the modemOne, dialling PPPoE
Router settingsAdmin password and options changed in earlier attemptsClean configuration on a known-good unit
ResultNo internet despite an active planAbout 50 Mbps, matching the plan
If your setup has drifted into a tangle, this is how to get back to a known state.
Result

Root cause: the setup had drifted into a tangle — a DSL cable on a fibre service, two routers behind the modem at once, and settings changed across many attempts — so nothing could be isolated. After confirming from her Superloop account that the service is fibre, reducing everything to modem LAN1 into one known-good router with PPPoE, and having support refresh the service from their side followed by a full power cycle, the connection came up and tested at about 50 Mbps, matching her 50M plan.

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