Change sub net on meraki FW from 192.168.28.0/24 to 192.168.28.0/23 Cant ping azure desktops after 192.168.29.0+

Javier M 46 Reputation points
2022-05-25T20:14:37.7+00:00

Hi Y'all so i changed My local lan subnet scope to allow more host to the network. Change sub net on meraki FW from 192.168.28.0/24 to 192.168.28.0/23 Cant ping azure desktops after 192.168.29.0+

Is it something in the Azure portal i need to change. usually i can figure out things like this but i'm stuck. mostly because the UI for Azure is not the greatest.

Azure VPN Gateway
Azure VPN Gateway
An Azure service that enables the connection of on-premises networks to Azure through site-to-site virtual private networks.
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Azure Virtual Network
Azure Virtual Network
An Azure networking service that is used to provision private networks and optionally to connect to on-premises datacenters.
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  1. GitaraniSharma-MSFT 47,006 Reputation points Microsoft Employee
    2022-05-26T16:02:09.933+00:00

    Hello @Javier M ,

    Welcome to Microsoft Q&A Platform. Thank you for reaching out & hope you are doing well.

    As mentioned by @Tchimwa Sougang , if you have updated your on-premise subnet address from 192.168.28.0/24 to 192.168.28.0/23 in your on-premise VPN/Firewall device, then you need to update this new address range 192.168.28.0/23 in your Azure local network gateway in Azure portal, then reset your connection and try again.

    To modify IP address prefixes/add additional address prefixes:

    • On the Local Network Gateway resource, in the Settings section, select Configuration.
    • Add the IP address space in the Add additional address range box.
    • Select Save to save your settings.

    Refer : https://learn.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-modify-local-network-gateway-portal
    https://learn.microsoft.com/en-us/azure/vpn-gateway/reset-gateway#reset-a-connection

    Regards,
    Gita

    1 person found this answer helpful.

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  1. risolis 8,701 Reputation points
    2022-05-26T02:42:39.17+00:00

    Hello @Javier M

    Thank you for posting here.

    Based on your problem description, I might think of checking the following settings:

    -Network security group
    -Route table(System Routes/UserDefineRoutes)
    -DHCP/Static IP allocation on the NIC interfaces
    -Gateway IP allocation

    Looking forward to hear from you.

    Please "Accept the answer" if the information helped you. This will help us and others in the community as well.

  2. Tchimwa Sougang 931 Reputation points Microsoft Employee
    2022-05-26T04:10:56.413+00:00

    @Javier M Thank you for your question. I assume that you are talking about your on-premises LAN network when you say, "Local Lan subnet". If it is the case, make sure you update the local network Gateway on Azure with the new address range 192.168.28.0/23, then reset your connection and try again.