can the following setup cause a performance drop?

[daggs1]

I have a 1gbps lan router, it has a 1gbps switch connected to it and all the devices on the lan are connected to that switch, is it possible that this lan layout causes performance drop?

 

[ch33zw1z]

Depends on usage. It's true that the way you're describing this means that there's a single 1gbps link that handles all lan device traffic to the router. It's also true that 1gbps is still quite a big pipe for stadard home use. So unless you're streaming just shit loads of data at once, you most likely won't notice.

I tend to put a high quality cable from switch to router in these cases.

And I also use iperf to see what speeds/throughout I'm getting over the link.

 

[daggs1]

my main usage that can be described as "heavy" is backups. the backup server is on a desk to and I intend to move it to the router later on, maybe that will cause performance drop?

 

[ch33zw1z]

Depends again on where the traffic is going, and how much at once, and the hardware on each end of the cable. With SSD's becoming a permanent fixture for most of us, the probability of saturing the link is increased, but you have to be pushing the limits for a bit before you start to see a slowdown on other devices.

You can also use iperf during the backups, to see how it performs during the high usage time frame.

 

[daggs1]

so to be on the safe side, it is better to have multiple nics on the machine, correct?

 

[ch33zw1z]

What you're starting to go into is server type of tech, which is referred to as teaming. Teaming requires specific hardware in both the server and on the switch side.

What you want to consider is where the traffic is coming from and going to. If you have a server that's going to push backups over the lan, it's best to keep those devices on the same switch if you're concerned about traffic. The traffic is layer 2, and won't go over the uplink cable to the next device

Either way, get familiar with iperf to test the links, both idle and when you're using it. It's not easy to saturate a gigabit link with standard home use.

 

[VirtualLarry]

It's not easy to saturate a gigabit link with standard home use.

This. Although, I've pushed / pulled 112MB/sec to my NAS over my Gigabit LAN.

I've toyed with the idea of going with 10GbE over copper, but haven't invested anything into it.

It would be really sweet, if the new AMD X470 mobos, all or mostly supported LAN speeds higher than 1GbE. (2.5/5/10 GbE would be a nice improvement, hint, hint, AMD!)

 

[daggs1]

What you're starting to go into is server type of tech, which is referred to as teaming. Teaming requires specific hardware in both the server and on the switch side.

What you want to consider is where the traffic is coming from and going to. If you have a server that's going to push backups over the lan, it's best to keep those devices on the same switch if you're concerned about traffic. The traffic is layer 2, and won't go over the uplink cable to the next device

when saying multiple nics per machine, I meant like in a normal router,. not nic teaming.

Either way, get familiar with iperf to test the links, both idle and when you're using it. It's not easy to saturate a gigabit link with standard home use.

will look into it, thanks.