What is a Dynamic Multipoint VPN and why to use it? DMVPN provides the capability for creating a dynamic-mesh VPN network without having to pre-configure (static) all possible tunnel end-point peers, including IPsec (Internet Protocol Security) and ISAKMP (Internet Security Association and Key Management Protocol) peers. DMVPN is initially configured Read more…
What is a Layer 2 MPLS VPN and why to use it? Layer 2 VPNs are a type of Virtual Private Network (VPN) that uses MPLS labels to transport data. The communication occurs between routers that are known as Provider Edge routers (PEs), as they sit on the edge of Read more…
What is a Site-to-site IPsec VPN and why to use it? A virtual private network (VPN) extends a private network across a public network, and enables users to send and receive data as if their computers were directly connected to the private network. A site-to-site VPN allows offices in multiple Read more…
What is a Layer 3 MPLS GRE VPN and why to use it? The MPLS VPN L3VPN over GRE feature provides a mechanism for tunneling Multiprotocol Label Switching (MPLS) packets over non-MPLS networks. This feature allows you to create a generic routing encapsulation (GRE) tunnel across a non-MPLS network. The Read more…
What is a Layer 3 MPLS VPN and why to use it? Layer 3, or VPRN (virtual private routed network), utilizes layer 3 VRF (VPN/virtual routing and forwarding) to segment routing tables for each customer utilizing the service. The customer peers with the service provider router and the two exchange Read more…
When you install the Cisco VPN client on Windows 8.1 you will likely receive the message “Reason 442: Failed to enable Virtual Adapter.” when you attempt to connect to a VPN. The fix is quick and easy. You do not even need to reboot. Open regedit and browse to the Read more…