Hi @Martinmajestic-3285,
Welcome to Microsoft Q&A Platform. Thank you for reaching out & hope you are doing well.
Is it possible to use the existing public IP which is associated with my AGWV1 to WAF V2?
As documented here, it is not possible to seamlessly transfer the IP addresses associated with the existing V1 gateway to V2.
This is due to V1 using a Dynamic Public IP Basic SKU, while V2 requires a Static Public IP Standard SKU.
It would be more effective to assign a new Static Public IP Standard SKU to the Application Gateway V2.
Could you please suggest me, how can we implement the disaster recovery by using azure application gateway?
Implement Azure Traffic Manager to effectively distribute traffic across various application gateways located in different datacenters.
For your reference: https://learn.microsoft.com/en-us/azure/application-gateway/application-gateway-faq#how-do-i-achieve-a-disaster-recovery-scenario-across-datacenters-by-using-application-gateway
If above is unclear and/or you are unsure about something add a comment below.
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Thanks,
Sai.