Azure virtual machines in the same network can’t see each other

azurevirtual-machines

I created a virtual network in Azure and added few VMs in it.
My expectation was to Ping/Access each machine from the other machine in the same network. However, machines don't seem to recognize each other.
Virtual Network and the machines in them

<?xml version="1.0"?>
    <NetworkConfiguration xmlns="http://schemas.microsoft.com/ServiceHosting/2011/07/NetworkConfiguration" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">

<VirtualNetworkConfiguration>

<Dns/>


-<VirtualNetworkSites>


-<VirtualNetworkSite Location="East US" name="AshishGupta">


-<AddressSpace>

<AddressPrefix>172.16.0.0/12</AddressPrefix>

</AddressSpace>


-<Subnets>


-<Subnet name="Subnet-1">

<AddressPrefix>172.16.0.0/15</AddressPrefix>

</Subnet>

</Subnets>

</VirtualNetworkSite>

</VirtualNetworkSites>

</VirtualNetworkConfiguration>

</NetworkConfiguration>

Best Answer

If by "don't seem to recognize each other" you mean you can't send and receive ICMP pings that's because ICMP is disabled on Azure VMs.

Try opening a TCP socket on the desired port running the service to which you want to verify connectivity instead:

PS C:\Windows\system32> New-Object Net.Sockets.TcpClient "192.168.10.10", 8043


Client              : System.Net.Sockets.Socket
Available           : 0
Connected           : True
ExclusiveAddressUse : False
ReceiveBufferSize   : 65536
SendBufferSize      : 65536
ReceiveTimeout      : 0
SendTimeout         : 0
LingerState         : System.Net.Sockets.LingerOption

NoDelay             : False
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