Cisco ASAv in Microsoft Azure only can deploy in more than /24 address range virtual network (VNET)

[KENTYONG44423]

When deploy Cisco ASAv in Microsoft Azure, it only can deploy or implement more than /24 address range existing VNET or new VNET.

But for my current VNET in Azure only created for /27 address range.

Can i contact Cisco support to allow me deploy Cisco ASAv in /27 address range VNET? Or contact Microsoft Support to allow it?

[Francesco Molino]

Hi

I personally worked with aws but not azure too much with asav.
Do you mean the asa provisioning fails when using /27?
Do you have a particular message?
I don’t see anything in Cisco documentation that /27 is restriction. TAC might be able to help.

[KENTYONG44423]

Hi Francesco,

As below image, the Azure show the Virtual Network for Cisco ASAv prefix must be smaller than or equal to 24.

Thank you

[Francesco Molino]

The screenshot says it has to be smaller or equal to /24 and the 32 addresses correspond to a /27.
Instead of writing it using cidr mask have you tried configuring it using the range like it shows in the screen:
172.31.154.0 - 172.31.154.31