When the Fault Is Upstream: an Optus 250M Plan That Was Never Activated, and a TPG PPPoE Line That Connected but Had No Internet

Student · SydneyOptus 250M HFCPlan never activatedRouter SIM backup ~30 MbpsTPG PPPoEConnected but no internet

Two recent Sydney jobs where the router was fine, the cabling was fine, and the fault sat one step upstream with the provider. One student was paying attention to the wrong thing entirely: their Optus 250Mbps HFC plan had never been activated, and the router had quietly been running on its built-in SIM backup at about 30 Mbps. The other had a TPG PPPoE line that dialled in successfully and held a provider-assigned IP, yet still could not load a page.

Optus case · where the traffic was really going

NBN HFC line

inactive

Bottleneck

→

Optus NBN box

idle

→

Optus router

online

→

Built-in SIM

~30

→

Your devices

~30

The router looked perfectly online, so nobody suspected the plan. But the traffic was not coming from the HFC line at all — it was riding on the routers built-in SIM backup at around 30 Mbps. Optus support confirmed the broadband order placed back in March had never been activated, which is also why no broadband charges had appeared.

Case one: the plan looked live, but it was never activated

This student had gone into an Optus store in March to sign up for a 250Mbps HFC plan. The NBN box and the router arrived, they set it up themselves, and it connected — but the speed was terrible. They came to us assuming the cabling or the router configuration was wrong.

We asked for the activation emails and the account details before touching any hardware.
Optus support checked the account and confirmed the March order had never been activated. No broadband charges had been raised in that whole period, which lines up.
The reason the router still worked: it has a built-in SIM, and the mobile data backup was carrying everything, at roughly 30 Mbps — a long way from the 250 they had paid for.
The fix was not technical at all. They went back to Optus by phone and in store to re-place the activation, after which the router picks up the fixed line on its own.

Real broadband vs the routers SIM backup

	Real HFC broadband	Router SIM backup
Speed seen here	the 250M plan they paid for	about 30 Mbps
Router status	Online	Also shows Online
Tell-tale sign	Speed is in the same order as the plan	Speed sits far below the plan and does not change after rebooting or moving the router
How to confirm	Check the WAN / line status page in the router admin	Check for a mobile or SIM backup indicator, and ask the provider to confirm the service is active

Case two: PPPoE connected, IP assigned, still no internet

A different student, on TPG with a TP-Link router and PPPoE dial-up. Their connection dropped, they called support, re-entered the PPPoE settings as instructed, and the router admin page then showed the connection as established with an IP handed down by the provider. And yet nothing loaded.

When the router says connected and holds a real WAN IP, the local side has done its job — the credentials, the cabling and the dial-up itself are all working.
That pattern points upstream: something on the provider side had not been refreshed after the outage.
They contacted TPG again, support ran a remote refresh on the service, and after one more device reset and re-dial the connection came back to normal.

How we isolated it, step by step

Collect the paperwork before touching hardware

Activation email + account details

Read the routers WAN / line status page

Is it the fixed line or a SIM backup

Compare measured speed against the plan

~30 Mbps on a 250M plan

Have the provider confirm the service state

Optus: order never activated

If PPPoE connects with a real IP, escalate upstream

TPG: remote refresh then re-dial

Why this is worth knowing

Both of these looked like home-network problems and neither of them was. When you are configuring things yourself it is very easy to fall into self-doubt — is it me, or is it them? A few checks settle it quickly:

If the router reports a healthy connection but the speed is nowhere near your plan, verify the service is actually active before you buy new gear.
If the router dials in successfully and holds a provider-assigned IP but nothing loads, the local side is fine and the provider needs to act.
Keep your activation emails and account number handy. Half of these calls are won by having the right reference number in front of you.

Result

Neither fault was in the home. Optus had never activated a broadband order from March, so the router had quietly been running on its built-in SIM backup at about 30 Mbps instead of the 250Mbps plan; re-placing the activation resolves it. On TPG, a successful PPPoE dial with a provider IP but no traffic was cleared by a remote refresh on the provider side plus one device reset and re-dial.

New NBN connection not working How NBN and providers relate Calling your provider in English Optus guide TPG guide What is HFC TP-Link routers

When the Fault Is Upstream: an Optus 250M Plan That Was Never Activated, and a TPG PPPoE Line That Connected but Had No Internet

Case one: the plan looked live, but it was never activated

Case two: PPPoE connected, IP assigned, still no internet

Why this is worth knowing

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