Carl Zellers asked an excellent question on how EIGRP works when run over FlexVPN with IP unnumbered, considering that routers will not be on a common subnet. I thought this was a great question so I took some help from
CCDE – DMVPN Crypto Design Considerations
This post will describe some of the crypto design considerations for DMVPN. DMVPN Overview and Crypto Overhead First let’s have a quick recap of what Dynamic Multipoint VPN (DMVPN) is. DMVPN is an overlay technology where multi point GRE tunnels
CCDE – Introduction to GET VPN and GET VPN Design Considerations
Introduction to GET VPN GET VPN is a Cisco proprietary technology aimed for private WAN designs where there is a need to encrypt the traffic. This may be due to regulatory requirements or just a need to keep traffic private.
Firewall – Some Insight into the Cisco ASA Failover Process
I’m currently working on a design and needed to verify some failover behavior of the Cisco ASA firewall. The ASA can run in active/active or active/standby mode where most deployments I see run in active/standby mode. When in a failover