Have trouble with your network? The 5-port Gigabit switch or hub only provides half the internet speed.
Have trouble with your network? The 5-port Gigabit switch or hub only provides half the internet speed.
ISP Supplied Fibr Modem - 200 Mbps connection Wifi Gigabit Router: Tenda AC21 AC2100 gigabit ethernet Mesh Device (x2): TP-Link AC1300 Deco M5 (both wired connected) Both configured as AP mode 8 port Gigabit Hub / Switch: Tenda SG108 5 Port Gigabit Hub / Switch: Tenda SG105. Whenever I perform a speed test on the two computers connected to the SG108, I consistently achieve maximum speeds of 200 Mbps. In contrast, the other two computers linked to the SG105 only reach half of my internet speed. I used only CAT6 Ethernet cables. Did I make an error here? I’m confused about why the five-port gigabit switch is only delivering half the performance. Thank you in advance for your assistance. (EDITED: Corrected diagram uploaded)
The wiring isn't as straightforward as it appears. There are switches connected to the units, and the Deco M5 models include two Ethernet ports—one for incoming traffic and one for daisy chaining. This setup means not everything is permanently hardwired. If the connection ever needs Wi-Fi, that’s likely the bottleneck. Updated January 12, 2022 by Universes
The SG105 relies on a point-to-point Deco M5 mesh network, so the main constraint will be Wi-Fi performance. Check out this review for more details: https://www.mbreviews.com/tp-link-deco-m5-review/2/
WiFi performance is stable overall, but switching to the secondary AP reduces speed significantly. The screenshot confirms this—despite being on 1 Gbps full speed, it only matches half the current rate. My suspicion points to an issue with the SG105 hub after I remotely accessed one of my daughter’s computers and ran a speed test.
The WiFi performance isn't a big problem, but the main issue is the reduced speed on the second gigabit hub. Since both deco units support gigabit connections, the expected transfer rate should be 1 Gb from Deco 1 to Deco 2 and then to the hub. The mesh Deco units are only for cellphone access, and no other devices are connected to them.
This clarifies a few points: Gigabit ports on these devices don’t guarantee gigabit speeds over a wired link—they’re designed for 1300Mbps total bandwidth. That doesn’t automatically mean you’ll hit those rates with any client, whether wired or wireless. These units weren’t built for your current configuration. Cable length and type can restrict performance. To maximize speed, use direct connections from each switch to the router, and connect the Deco devices directly to the router. This ensures optimal speeds as long as your ISP and router support it.
Thanks, I'll test it and check if performance boosts after the second gigabit switch. Just need to place an order for more CAT 6 cable.
These units include SoCs with five Ethernet ports, indicating they likely have an integrated switch. I expected this setup to function properly, but it’s unclear how everything was configured. For safety, it’s better to connect everything through a main switch instead of daisy-chaining. If you made the cables yourself, one could be defective and only support 100Mbit speeds. It’s quite common to encounter faulty connections when crafting your own cables, often requiring repeated cuts and retries before achieving a stable link.