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Implementing Cisco Networking Solutions by Harpreet Singh

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Remote access VPNs

MPLS service providers provide L3 VPN services with different types of access links. The last mile CE-PE link could be a serial link with PPP/ HDLC or even FR encapsulation, or an Ethernet port which could be native or a trunk port with a specific VLAN being a part of the Layer 3 VPN. These circuits are dedicated circuits. For remote users, the SP also provides remote access to VPN services called RA-VPN services. The RA-VPN services allow mobile users to dial into one of the access servers of the service provider, and after authentication, the user becomes a part of the layer 3 VPN. These services are used by large enterprises for providing access to their mobile workers. All configuration at the routers and remote access ...

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