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My ISP insisted that my slow download speeds are due to my third party router. This is BS, right? (alien.top)

submitted 1 year ago by ballisticks@alien.top to c/homenetworking@selfhosted.forum

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I live in Canada, and my ISP is Telus. I'm subscribed to their gigabit plan.

However, I only ever really get 250mbps. This is adequate, but I'd like to get closer to the speeds I'm paying for.

I get that peak times might have slower speeds, but I can do a speed test at 3am and it's the same. Hell, even if I was getting 750 I'd be happy.

Called Telus up, and the only thing the guy would say is its because I have a third party router and not their own. I have a TP-Link Archer C7 with openwrt. It's a gigabit router. My PC is connected to this via a gigabit switch.

My ISP does allow third party routers, I've been using it for years before upgrading to gigabit.

On the plus side they're sending out their newest router for free so I could at least give them the benefit of the doubt, but I'm suspecting I'm gonna get exactly the same speeds more or less.

The guy kept touting its "wifi capability", even though I don't use wifi for anything except cellphones. All my heavy downloads are on wired devices.

So am I correct in that the guy is talking out of his ass and I'm likely stuck on a 2 year term paying $30 more than I should be?

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[–] SevaraB@alien.top 4 points 1 year ago

You’ve got too much stuff in the path to troubleshoot- is it the router? Is it the switch? What’s your demarc? A fiber ONT?

You need to hook your computer up as close to directly to the demarc as you can. If the speed gets better, try the router and then the switch on their own to see which slows things down.

Also, try fresh cables. Damaged cables might have your router sending things a couple times before they’re successful, and only the successful packets count (so gigabit router with 75% packet loss, or 3 failures for every success).

If you’re going to go down the rabbit hole and have a friendly network engineer to reach out to who can help troubleshoot, you can run Wireshark (free) during a speed test and find evidence of excessive packet retransmissions or FIN or RST packets (connections getting terminated abruptly).