Solve the problem that the data transfer of virtual machines in Hyper-V is slow and slow.

Environment: a DELL R730 set up server 2012 R2 and installed hyper-v. All network cards are gigabit.

Nic 192.168.5.98 (IP network of external network control server) Nic 2Rd 192.168.50.98 (switch network dedicated to virtual machines)

A virtual machine of win10 is built and the VHD1--- network is an external network-- 192.168.50.10

Use your own desktop PC1 ip:192.168.5.11

Use your own desktop PC2 ip:192.168.50.12

The data transmission rate of pc1- and pc2 can reach 100MB/s in the same LAN.

On the other hand, the data transmitted by pc1 and vhd1 are less than 1MB/s, and most of them are 100KB/s, which leads to the direct disconnection of PC and the failure of normal use. Moreover, vhd1 can not be accessed properly, and server2012 cannot be accessed properly.

Use PC2 to ping 192.168.50.10 (VHD1) ping 192.168.5.11 (PC1) ping 192.168.5.98 (server) ping is not available, indicating no communication

Find out by looking for information.

Set the server network card 2 to disable the virtual machine queue and it can be used normally.

In addition, I don't know if some of the options can have some effect, but the measured results don't seem to have much effect. The real transmission effect decreases from 40-50MB/s to 15-20MB/s after 2G transmission.

Unable to reach the real 100MB/s transmitted by the LAN

This is server Nic 2.

The following is a virtual network card