Outsourcing White Papers
MPLS Virtual Private Networks
Overview Virtual Private Networks (VPNs) are a method of interconnecting multiple sites belonging to a customer using a Service Provider (SP) backbone network in place of dedicated leased lines. Each customer site is directly connected to the SP backbone. The SP can offer a VPN service more economically than if dedicated private WANs are built by each individual customer because the SP can share the same backbone network resources (bandwidth, redundant links) between many customers. The customer also gains by outsourcing the complex task of planning, provisioning and managing a geographically distributed network to the SP. Unfortunately, existing VPN solutions are not all interoperable and may be tied to one equipment vendor and/or a single SP. This has created strong interest in IP-based VPNs running over the public Internet using standards-based interoperable implementations that work across multiple SPs. Many of these IP-based solutions require IP address-mapping or double encapsulation using two IP headers. This can require complex configuration management and requires additional processing at the entry to and exit from the SP’s networks.
| Publisher | Data Connection | File Format | PDF, requires Acrobat Rdr 5 |
|---|---|---|---|
| Date Published | November 2000 | Downloads | 10 |
| Format | White Papers | ||
| Topics | |||
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