Have two network interfaces 2x1Gbit/s

[keinvg4352]

Hello, i want to ask if other people have also two network devices and how are you using them?

I thought about if its possible to use both as one and have like 2 Gbit/s available.

 

[sb-jw]

I thought about if its possible to use both as one and have like 2 Gbit/s available.

Yes, you can view it as an interface from the configuration perspective. But you still only have 2x 1 GbE and not 2 GbE, a client can still not load with 2 GbE in a stream but only with 1 GbE, but it can achieve 2 GbE as a total load over several streams / connections. However, this assumes that you use LACP with L3+4, because L2 with only two devices works to a very limited extent.

For LACP you need a switch that can support 802.3ad. SoHo switches can now do this too, not just Enterprise switches. But for L3+4 you often need enterprise switches.

Here you will find an overview of the possible modes: https://community.fs.com/article/basics-of-windows-nic-teaming-and-linux-nic-bonding.html

Tell us something about your setup and we can tell you whether it makes sense or not.

 

[keinvg4352]

Yes, you can view it as an interface from the configuration perspective. But you still only have 2x 1 GbE and not 2 GbE, a client can still not load with 2 GbE in a stream but only with 1 GbE, but it can achieve 2 GbE as a total load over several streams / connections. However, this assumes that you use LACP with L3+4, because L2 with only two devices works to a very limited extent.

For LACP you need a switch that can support 802.3ad. SoHo switches can now do this too, not just Enterprise switches. But for L3+4 you often need enterprise switches.

Here you will find an overview of the possible modes: https://community.fs.com/article/basics-of-windows-nic-teaming-and-linux-nic-bonding.html

Tell us something about your setup and we can tell you whether it makes sense or not.

I just have 4 VMs (Webserver, Mailserver, Voiceserver and Gameserver).

Or would it make sense to use the other as redundancy?

 

[sb-jw]

Tell us something about your setup and we can tell you whether it makes sense or not.

 

[keinvg4352]

I did tell you??? What you want to know

 

[sb-jw]

Which switch do you have? Do you have one or two? Can they LACP with L3+4? Do they run as a unit? Does every switch have an uplink? How many clients are effectively accessing it? Does the server have an RPS? Does the rack have A+B feed?

 

[keinvg4352]

Just as note, its a rented Dedicated Server, yes these are to seperate uplinks.
And i don't know all that in detail.

Intel Corporation I210 Gigabit Network Connection, LACP (802.3ad), 100-500 Clients

 

[sb-jw]

If you want redundancy, then your server should have an RPS, the rack should have an A+B feed and the two switches from the data center should also run as a single unit, connected to two feeds and each having their own uplinks. Otherwise, LACP doesn't really make sense from a redunancy perspective.

If you have a bandwidth problem and want to solve it, but you don't care about the redundancy aspects, then you should definitely think about LACP or 1x 10G.

Now the question remains, which scenario are you really interested in?

If you have problems, the question arises whether the problems are really due to bandwidth or your server cannot handle the load. Because LACP will only really help you if bandwidth is the problem and the server still has sufficient resources.

 

[keinvg4352]

Hey, i dont really have bandwith problems, I just have two and don't know what to do with it, cause it seems like a waste to don't use the second one for anything.

 

[sb-jw]

If you have it anyway and don't know what to do with it, then simply have the switch ports configured as LACP (802.3ad).
The IPMI interface must then be dedicated if it is not already. Because shared no longer works with LACP. You should also make sure that you have dedicated IPMI access, as LACP needs to be configured on both sides.

Alternatively, you can set up the second interface and separate your services. So, for example, voice and gaming on eth0 and mail and web server on eth1.