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I have a router with 4 ethernet ports. Since I need more ports I use an ethernet switch to multiply the ports. In my current setup 3 ethernet ports of the router are used by 3 computers, the remaining port goes to an ethernet switch and two other ports of the switch are used by additional 2 computers.

The ethernet switch is tp/link 5 port 10/100 Mbps device.

In order to run this system I'm doing various trial and error experiments such as turn-on/off router/switch, plug in/out ethernet cables, etc. The thing is the 2 computers connected to the ethernet switch sometimes get connected to the Internet (once they are connected there are no further problems). But the problem is when I turn off the switch and turn it on again the Internet connections of these 2 computers connected to the switch get lost then I need to do those trial and error experiments again to make the system to work.

What is the problem here? Is there a sequence of steps which will make the system work without doing these trial and error experiments? Thanks

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  • Just the internet connection or also the LAN connection? Do the 2 computers at least get an IP address from your router, when you turn on the switch? Do they get an IP address from the correct router? (Does the gateway's MAC address in arp -a look right?)
    – grawity_u1686
    Commented Nov 11, 2020 at 16:08

1 Answer 1

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That is a fairly slow switch. My experience with these older devices is that they stop working at random intervals and need to be restarted. Fairly common.

Replace it it with a newer, faster switch that is good to top quality and the problems should disappear.

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