Internet speed has reduced drastically

Question

Windows VM bandwidth used to be around 1000Mbs - but now it has dropped to about 200Mbs.

My application is not working - please help. I have a Developer support plan

Answer 1

Hello @Amit Dutt,

The drop in bandwidth from around 1000 Mbps to about 200 Mbps for your Windows VM could be due to several factors related to Azure’s network performance capabilities. Each Azure virtual machine (VM) size has a specific maximum network throughput, which is measured in megabits per second (Mbps). Larger VMs typically have higher bandwidth limits compared to smaller ones. If your VM’s size or type has changed, or if it is sharing resources with other VMs on the same hardware, this could lead to reduced bandwidth availability.

Additionally, the network bandwidth allocated to a VM is primarily measured on egress traffic (outbound), meaning that all outbound traffic counts towards the allocated limit. If your application is generating more outbound traffic than before, it could be hitting the bandwidth cap, resulting in slower performance.

To troubleshoot this issue, consider checking the current VM size and its allocated bandwidth, as well as reviewing the network traffic patterns to identify any spikes that could be affecting performance.

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