How to perform a connectivity check if a machine is shown offline in ACP

Connectivity check for a machine shown offline in ACP

Challenge

A source machine has a replication agent installed but it is shown in an offline state in ACP, although the machine has been properly discovered before.

Solution

One of the possible ways to check the connection to Acura is to use the telnet command on the source machine.
Execute telnet <Acura's_IP> 443 from the command line to create a remote connection with the target system over a TCP/IP network.
If such a connection can not be established, the following message will be shown:

  1. Connecting To <Acura's_IP>...Could not open connection to the host, on port 443: Connect failed
This is a sign that the replication agent will not be able to connect to Acura's instance unless current network settings are adjusted. Please check that the required ports are open and your Security groups allow the corresponding traffic.

Info
By default, the telnet client in Microsoft’s Windows operating systems is disabled. Run the following command in the command prompt with administrator permissions to enable it: 
dism /online /Enable-Feature /FeatureName:TelnetClient

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