flexvpn | learnitwithcifelli

Configuring & Verifying FlexVPN Redundancy with Dual Hub & Single Cloud

"The What?" - In this post I intend to add onto previous FlexVPN labs/posts where I will cover deploying a secondary hub in a single...

Dual Hub FlexVPN Error Tidbit

Sharing an issue that took me some time to troubleshoot & figure out in my dual hub single cloud FlexVPN lab/post (see here: Configuring...

FlexVPN Redundancy Tidbit

I want to cover the most commonly used FlexVPN redundancy designs since I intend on building out a few scenarios to play with for...

Configuring & Verifying FlexVPN Direct Spoke-Spoke Tunnels

"The What?" - In this post I plan to go over how to create FlexVPN direct spoke-spoke tunnels. We will see & understand how NHRP is used...

IKEv2 Configuration Payload Tidbit

In this tidbit I want to cover what IKEv2 configuration payloads are & why they are needed. So it is sometimes desirable for the hub in...

Next Hop Resolution Protocol (NHRP) Tidbit

NHRP is an important protocol used with DMVPNs & FlexVPNs that allows spokes to directly connect to other spokes. To break it down...

Configuring & Verifying FlexVPN Hub & Spoke Tunnels

"The What?" - In this post we will go over setting up FlexVPN hub & spoke tunnels. We will utilize SVTIs on our spokes, DVTIs derived...

IKEv2 Authentication Error Tidbit

So I recently went down a rabbit hole the other day trying to figure out why I could not use my IOS PKI Certificate Authority (CA) in...

DMVPN versus FlexVPN Tidbit

I want to briefly dissect how DMVPN & FlexVPN are very similar in nature, but hit on some important differences in this tidbit. I will...

IKEv2 Name Mangler Tidbit

I want to touch on what the IKEv2 Name Mangler is & what capabilities it provides us. Name Mangler grants us the ability to derive a...

Configuring, Verifying, & Troubleshooting IKEv2 Name Mangler Feature

Ok, so let's continue to build from previous FlexVPN labs/blogs. This post specifically will hit on utilizing the IKEv2 Name Mangler...

Configuring, Verifying, and Troubleshooting a Point-to-Point FlexVPN with PKI Authentication

In this post I want to demo/breakdown configuring a point-to-point FlexVPN that uses certificate authentication. This lab demo will use...