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Hi @servicescontractugiui this guide provides information to change the FMC IP address from the FTD. https://www.cisco.com/c/en/us/support/docs/security/secure-firewall-management-center/221984-edit-the-firewall-management-center-ip-o.html
We'd need to see the configuration to understand why the authorisation commands apparently fail to be accepted and the debug output, alternatively you could log a call with TAC.
@TheGoob provide your configuration and the IKEv2 debugs for review.
There aren't guides for every cisco product, so there isn't a specific 1100 series router guide, rather general guides for IOS-XE supported hardware.
@TheGoob Remote Access VPN's are supported on IOS-XE routers using FlexVPN, example guide - https://www.cisco.com/c/en/us/support/docs/security/flexvpn/200555-FlexVPN-AnyConnect-IKEv2-Remote-Access.html or (less common) SSL-VPN is supported https://w...
@knanyhy011 well I took your configuration and applied it in the lab and the basic hub-spoke VPN works, so there must be something in your environment. I assume you've confirmed there is L3 connectivity between the spoke and the hub routers? And the ...