June 2005
Intermediate to advanced
312 pages
11h 13m
English
Content preview from MPLS VPN Security
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C H A P T E R
7
Security of MPLS Layer 2 VPNs
New architectures allow MPLS to build VPNs interconnecting Layer 2 (L2) networks that
transport L2 frames. A Layer 2 VPN comprises switched connections between subscriber
endpoints over a shared network. Nonsubscribers do not have access to those same endpoints.
Originally designed using network technologies at Layer 2 (Frame Relay, for example),
VPNs are now being augmented by packet-based technologies such as IP and MPLS.
A shift is underway within service provider networks from circuit-switched to packet-
based technology. Virtual Private LAN Service (VPLS) and Virtual Private Wire Service
(VPWS) ...
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