Table of Contents
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Some Observations on Network-based VPN Services
NB-VPN Architecture Design Goals
Some Architecture Requirements
What is a Virtual Router?
VPN Tunneling
Scenario 1: VR to VR Direct Connectivity
Scenario 2: VPNs with Backbone VRs
Combination of VR Deployment Scenarios
PPT Slide
Membership and Topology Determination
VPN Information Discovery
Discovering VPN Information using BGP
Example of Auto-Discovery
Concept: Automatic per VPN Layer-2 Backdoor Link
Multiple Backbones Scenario
VPNs with Backdoor Links
PE with Multiple Service Providers
Multiprotocol VPNs (e.g., mixture IPv6/IPv4 based VPNs)
Per VPN Management if needed
VPN User Management/Operation
Scalability
Security
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