Two network cards with different speeds 100 and 1000 what will be the speed?

Question

Computer networks

What will be the speed of two network cards in the same subnet (192.168.1.0-255), equal to the minimum?
Or does each have their own?

Answer 1

It depends on what speed the switch port supports, where these cards are connected.
If the connection is pc-pc, then 100.

Answer 2

Let me explain a little more then.
Two network cards in one PC, look at different switches, each in the corresponding one, toet 1000-1000, 100-100, in this case everything should work correctly? Or do you need more fine tuning in the PC?
How to check the speed of the interface in openwrt?

Answer 3

The question is not absolutely correctly put:
Consider that there is still a network route, a metric. Packages go according to these tables.
Those. if you have two network cards plugged into the same subnet, they will have different IPs (let's say 192.168.101 - 1Gb and 192.168.102 - 100Mb), then one card will work for input / output, let's say (192.168.102 - 100Mb ).. the second one will work as an input.. i.e. if someone connects (at 192.168.101), but will always answer (192.168.102)... even if 1Gb(192.168.101)
those. in the end you will not have 1000, you will work in 100. Why is that? because in addition to network interfaces there is also a table according to which the PC stupidly sends packets .. and it does not look at the speed of the card .. it is not written anywhere in the table .. but there is a weight of the metric, if the metric is 100 lower than that of 1000, then the PC will send through the metric below by weight.. i.e. through 100.. Also, if the metric and route are the same, then the packets will go through the first interface in the list, according to the table.
see routing, metrics, and the route command.
In your location (one subnet) it's better to leave 1000, and throw out 100. and get the final overall speed..