Ask about IP address exhaustion

Fuma 21 Reputation points

I am using openVPN with azure vpn P2S.
I would like to ask about IP address exhaustion.
The configuration of azure vpn is set up as follows.
I would like to use about 5000 for ip address usage.
In that case, what should the "address pool" and other settings of the "azure vnet gateway" be?

   ■ azure vnet subnet  
   - FrontEnd  
   address space  
   ■ azure vnet gateway  
   - address pool  
   tunnel type  
   - openVPN  
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  1. KapilAnanth-MSFT 34,601 Reputation points Microsoft Employee

    Hi @Fuma ,

    Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.
    I understand that you would like to connect 5000 P2S users simultaneously to Azure VPN.

    Kindly correct me if I my understanding is wrong

    For 5000 Connections, you must use the appropriate gateway SKU that supports this.
    Refer: for comparison table

    The following SKUs may suit your scenario,

    • VpnGw4
    • VpnGw5
    • VpnGw4AZ
    • VpnGw5AZ

    With respect to P2S Client configuration address pool, you can use a CIDR of /19 and above.
    Also, this should not overlap with any of your other networks
    For e.g, (in your scenario)


    Please do let us know should you require more details.



    Please don’t forget to close the thread by clicking "Accept the answer" wherever the information provided helps you, as this can be beneficial to other community members.

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