New Gigabit Switch kills connects speeds for some reason?

[TGibson]

Got a new non-managed Gigabit 8-port switch Amazon tp-link (TL-SG108), and for some reason it hobbles the whole network wired and wireless. I have the 1GB service, and get nearly double that by the Rogers Infinity App. With the Switch plugged in in will fall so low the Excite WiFi TV Boxes will randomly discontent. My only question is what switch should I get the won't interfere with the gateway.

[LordDrakkon]

I don't have any issues with my 8-port Asus unmanaged switch I have behind my TV that connects directly to the modem. I have been using it for the better part of 7 years now without any issues at all. I also have an Asus router connected directly to the modem in AP mode that has also worked very well for me over the past 4 years. I have the 1.5Gbut service.

[RussellA]

Quick question: Have you logged into the switched to check the default settings of the switch?

Some network switches are factory without IGMP Snooping enabled, which causes some type of traffic to "flood" all ports of the switch.  As it's the most efficient way to transmit data on a network, it may be causing the degration you're talking about.   Enable this setting right away and save the settings to keep it stored.

As well, make sure QoS is enabled for the switch as it allows for prioritization of traffic flagged as higher priority.  The factory default log-in information is usually printed on the bottom of the network switch.  Changing the default password is a good idea, for security, as the Wi-Fi of the network will expose the network switch.

[TGibson]

The switch I have is a tp-link (TL-SG108) it is non-managed there are no setting.

[-G-]

---

@TGibson wrote:

The switch I have is a tp-link (TL-SG108) it is non-managed there are no setting.

---

There should not be any issues with that LAN switch.  A few years ago, when the XB6 (with only 2 Ethernet ports) was the only gateway available, Rogers gave customers needing more LAN connections a 5-port version of your switch (the TL-5G105) to expand the number of Ethernet ports available.

Which version of the Rogers gateway do you currently have, and how do you have your TP-Link switch connected?

Did you do anything like try to connect your switch to the gateway with multiple Ethernet links for extra speed?  Or connect a computer with multiple connections?  Or connect multiple switches together in such a way that you created a loop in your network?  Asking because the TL-SG108 is a very basic switch.  Your switch does not support link aggregation or even the basic 802.1D spanning tree protocol, and neither do the Rogers Xfinity gateways.

Are you using good-quality twisted pair Ethernet cables, with all eight pins on the connectors wired, straight-through, end-to-end?

Do you see anything weird happening, like having very little traffic on your home network but the activity lights are flashing so furiously that they appear to be on, solid?

To get your network stable, start off with the simplest configuration possible.  Your Ethernet switch only has Gigabit Ethernet ports.  Plug it into one of the Gigabit Ethernet ports on your Gateway.  Do not use LAN port #4, which is a 2.5 Gigabit Ethernet port.

When connecting of your own devices to Port 2 on the Gateway, make sure that the "Associate Ethernet Port 2 to HOME SECURITY Network" is NOT enabled.

If you start off with having Port 1 on your Ethernet switch connected to Port 1 on your Xfinity gateway, then connect network devices, one by one, to your LAN switch, your network should remain stable.  Once your network is stable, you can then move (or add) Ethernet-connected devices to other ports on the Gateway.