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How to configure elastic IP addressing

Elastic IP addressing allows a user to assign a permanent IP address to a specific network interface of a VM.  Whereas a Public IP address might change when a VM is stopped and then restarted, an Elastic IP address remains the same as long as it is assigned to a network interface. 

Each organization has a "repository" of elastic IP addresses, to which IP addresses can be added and removed.  When an elastic IP address is in use, it appears as locked in this repository. If a VM or an application is deleted, the previously used elastic IP addresses are freed and become available for use.

To configure elastic IP addressing:

1     In the Details pane, select the Networks tab.
2     In the External Access area, select Elastic IP.

3     Click Select to open the Elastic IP Addresses page.

4     Select an existing IP address or click Create Elastic IP Address to add an IP address to the repository.

5     In the Network tab, click Save.

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  • Avatar
    Mirko Grabel

    Very nice explanation!

    One follow-up: I have an elastic IP but what do I configure as my default gateway and what is the subnet mask?

    For example: I have the elastic IP, is my default gateway the

    I couldn't find that info anywhere.



  • Avatar
    Gal Moav

    Hi Mirko, 

    The elastic IP is the public facing IP, not the internal IP on the VM itself. 

    So on your VM you can configure any IP (static or DHCP) and it will be the IP of the VM inside the Ravello application network. Note also that we do not change the guest configuration so you need to make sure your guest VM is configured with the same IP as you declared on the ravello UI. The network configuration on the UI is only used by the system in order to build the underlaying network. 

    So - the elastic IP is a publicly available IP and is used to nat traffic from the internet into your internal fenced network. 

    Hope that this helpful. 


  • Avatar
    Rugved Bidkar

    Can I request multiple elastic IPs in same subnet?

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