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Three Visits to Get a Seven-Room Share House Stable: Telstra 100M on DSL, and Two Mesh Kits That Did Not Survive It

Share house · near UNSWTelstra 100MDSL phone line2 storeys · 7 rooms3 on-site visitsMesh → separate SSIDs

When the student first got in touch I assumed this was a straightforward dead router. It turned out to be a two-storey, seven-bedroom share house on a DSL line where two different mesh kits both failed in different ways, and where the thing that finally made it stable was giving up on a single shared network name.

What the house looked like

A DSL house, and where a fault can hide
Telstra DSL line
100M plan
→
Main router (dial-up)
upstairs
→
Second unit
downstairs
Bottleneck
→
7 bedrooms
2 floors

The awkward part of this job is that two routers which had both tested fine on a WAN-port connection misbehaved on this DSL service. A router that works on one connection type is not automatically fine on another, and in a seven-room share house the symptom reaches everybody at once.

Three visits

Three visits, and what each one ruled out
1
Visit 1 · test the original Telstra router
No signal passing through
2
Visit 1 · fit replacement router A
Online, but will not mesh with the Telstra booster
3
Same night · housemates report brief dropouts
All rooms affected
4
Visit 2 · fit a NETGEAR mesh pair
Both units paired, one network name
5
30 minutes later · WiFi but no internet
Main router's internet light still normal
6
Visit 3 · TP-Link main + NETGEAR extender
Separate SSIDs, deliberately
7
Half a day later · follow-up with the household
No further dropouts, both floors covered

Attempt by attempt

The three attempts side by side
Attempt 1Attempt 2Attempt 3
Main routerReplacement router ANETGEAR mesh mainTP-Link
Second unitOriginal Telstra Smart WiFi BoosterNETGEAR mesh nodeNETGEAR as extender
Network namesMeant to be sharedSharedDeliberately separate
What went wrongThe two brands would not mesh at allWiFi present, internet gone within 30 minStable on follow-up, both floors covered
The third setup deliberately gave up something the household wanted, and that is the part worth explaining.

What I took away from it

Result

Root cause: the original Telstra router had stopped passing signal, and the follow-on faults came from hardware combinations that did not suit this DSL service — a replacement router that could not mesh with the Telstra booster, then a NETGEAR mesh pair that produced WiFi with no internet within half an hour while the main unit's internet light stayed normal. The setup that held was a TP-Link main router with the NETGEAR unit as an extender on deliberately separate network names. On follow-up half a day later the household reported no further dropouts, with coverage upstairs and down.

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