0

Background (Why I want to do this)

My computer is connected to a flow control switch.The switch will limit the speed of each accessed IP to 10mbps.So I want to access multiple IPs and merge them to improve the network speed

What I have done so far

I refer to these articles:

  1. Windows-Creating Virtual Interface Over a Single Physical Interface
  2. Force an application to use a specific network interface
  3. https://www.altaro.com/hyper-v/hyper-v-network-teaming-understanding-link-speed/
  4. https://learn.microsoft.com/en-us/powershell/module/netswitchteam/new-netswitchteam?view=windowsserver2022-ps
  5. http://woshub.com/configure-nic-teaming-windows/

Now I have access to multiple IPs, and can reach the peak network speed of each network card through the curl command

all vEthernet can work

But I can't combine their network speeds to one network card through NIC Teaming

I try run New-NetSwitchTeam -Name "SwitchTeam01" -TeamMembers "vEthernet (net1)","vEthernet (net2)","vEthernet (net3)","vEthernet (net4)"

But I got a 10mbps vEthernet

SwitchTeam01 10mbps

What I need help with

  1. How to aggregate these virtual network cards and improve the speed?
  2. Is there any easier way to achieve what I am trying to do?
5
  • Same question : Are you trying to aggregate NICs for combined bandwidth? If so, it doesn't work like this.
    – harrymc
    Oct 24, 2022 at 14:18
  • I just want to aggregate virtual ethernet to get combined bandwidth Oct 25, 2022 at 15:24
  • You can't combine bandwidth. Aggregation is a failover feature, not performance. I can detail more in an answer, but it will be negative.
    – harrymc
    Oct 25, 2022 at 15:27
  • I understand Thank you Oct 26, 2022 at 12:27
  • You actually already did create a faster network connexion; what you attempted worked, it was your test that failed. You wont make any individual packet travel faster, but you'll be able to send as many packets on this virtual network as the total that could be put through the physical, so long as they're not sequential (a real device wouldn't have this limitation). Id est you increased your bandwidth. Try the test again, but run two curls at the same time, I think you'll find a huge decrease in the time it takes for them to complete vs using either network without aggregation.
    – Hashbrown
    Jun 19, 2023 at 16:19

1 Answer 1

0

Network adapter Teaming does not aggregate bandwidth. Adapter teams are not created for bandwidth aggregation, but rather for load-balancing and fail-over.

This is because a network connection can only have one route connecting one network physical connection on each side of the connection.

You may create a team on four gigabit adapters, see that link speed report of 4 gigabits, and believe that you've created a 4 gigabit pipe. But in fact you have made a link aggregation of four gigabit adapters that act as one logical unit.

For more explanations, see this article.

When multiple physical paths are available, some technologies can make use of that to increase transmission speed. However, not adapter teaming. Some technologies, such as MPIO and SMB multichannel, work better when you leave adapters unteamed.

For more information, see the article Hyper-V and Network Teaming: Understanding the Link Speed.

6
  • Wouldn't using it for load-balancing make it faster? That article gets hung up on making a single stream faster, but it fails to realise most use-cases are made up of many connexions; each of these individual streams can use a different member of the team simultaneously to achieve higher throughput. Even just a basic round-robin of the team members when transparently feeding tcp requests to the fake device would result in a multiple of elapsed speed as a whole so long your bottle-neck was your local NICs, and not the network they're connected to.
    – Hashbrown
    Jun 19, 2023 at 16:01
  • @Hashbrown: The point is that 4 x 1Gbits is not equal to 4Gbits, except in aggregate bandwidth. But no one connection can achieve 4Gbits.
    – harrymc
    Jun 19, 2023 at 18:31
  • No, the point is that in most usecases aggregate bandwidth is all you care about. Pulling a file via udp at four points simultaneously will get you the file literally four times faster (in the ideal case, I think MS teaming is really only capable of 1.4x per doubling of team size). This means your effective data rate IS 4gbit. No one stream would achieve this, no, but usecases relying on single streams for an entire computer's connexion is relegated mostly to VPNs.
    – Hashbrown
    Jun 27, 2023 at 5:02
  • @Hashbrown: One connection cannot use multiple adapters, and even if it could, the data arrives from the source in a single stream so there's no gain. Only very specific programs will use multiple connections for one download/upload, such as torrent clients and multi-threaded download managers. For most programs the situation is 4x1GB=1GB.
    – harrymc
    Jun 27, 2023 at 8:17
  • Or web browsers? Or watching netflix and downloading stuff from steam at the same time? Heaps of use cases other than "I'm using only one application" exist that would take full advantage of a system with a multi-nic team. To imply it's not useful simply because there's a tiny usecase of "I want this one stream in this one application that is all I care about on my whole machine to go obscenely fast" is absurd especially given it wasn't so much as even hinted in the question!
    – Hashbrown
    Jun 27, 2023 at 14:00

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .