By Zhuo Xu
A consultant to designing and imposing VPLS prone over an IP/MPLS switched merchant backboneToday's verbal exchange prone are searhing for comfort, simplicity, and versatile bandwidth throughout extensive zone networks-but with the standard of provider and keep an eye on that's serious for company networking functions like video, voice and knowledge. service Ethernet VPN prone in line with VPLS makes this a fact. digital inner most LAN provider (VPLS) is a pseudowire (PW) established, multipoint-to-multipoint layer 2 Ethernet VPN provider supplied by way of providers prone through deploying a VPLS carrier to clients, the operator can specialize in offering excessive throughput, hugely on hand Ethernet bridging companies and depart the layer three routing choice as much as the customer.Virtual deepest LAN providers (VPLS) is instantly changing into the number 1 selection for plenty of businesses and repair companies to set up information verbal exchange networks. Alcatel-Lucent VPLS answer allows carrier prone to provide firm consumers the operational rate advantages of Ethernet with the predictable QoS features of MPLS.Items Covered:Building Converged carrier Networks with IP/MPLS VPN TechnologyIP/MPLS VPN Multi-Service community OverviewUsing MPLS Label Switched Paths as provider shipping TunnelsRouting Protocol Traffi c Engineering and CSPFRSVP-TE ProtocolMPLS Resiliency — Secondary LSPMPLS Resiliency — RSVP-TE LSP quick RerouteLabel Distribution ProtocolIP/MPLS VPN provider Routing ArchitectureVirtual Leased Line ServicesVirtual deepest LAN ServiceHierarchical VPLSHigh Availability in an IP/MPLS VPN NetworkVLL provider ResiliencyVPLS carrier ResiliencyVPLS BGP Auto-DiscoveryPBB-VPLSOAM in a VPLS provider community
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Extra resources for Designing and Implementing IP MPLS-Based Ethernet Layer 2 VPN Services: An Advanced Guide for VPLS and VLL
Layer 3 VPN is also referred to as Virtual Private Routed Network (VPRN). Customers require different VPN topologies such as: • Extranet — Some enterprises want to share part of their networks with partners to improve productivity while isolating other parts of their networks. • Hub-Spoke VPN — Many customers require their branch offices to be connected with their headquarters and want the traffic to be forced through the headquarters’ firewall. • Overlay VPN — Customers may want to have Internet access through some of their sites while isolating the rest of their network from the Internet.
5 illustrates an overview of the Triple Play solution. 5 Overview of the Triple Play Solution Element Management Multicast BSA Network Management BSA Softswitch BSA Secure VPLS Infrastructure DHSP Server IP/MPLS BSR BSA Multicast Multicast BRAS Internet Open Media Suite Multicast BSR - Broadband Service Router BSA - Broadband Service Aggregator BRAS - Broadband Remote Access Server CHAPTER 2 ■ I P/ M PL S V PN M U LT I-S E RV IC E N E T WO R K OV E RV I E W 31 Triple Play architecture is based on two major network elements, optimized for their respective roles — the broadband service aggregator (BSA) and broadband service router (BSR).
Redundancy in the design of the control and data planes guarantees the maximum service availability to achieve the highest level of SLAs. With NSS, each component belonging to a service instance has its state maintained in the event of failover. In many conditions, an In Service System Upgrade (ISSU) can be performed to eliminate a service outage during a router upgrade. HA aspects, including NSR and NSS, are covered in detail in Chapter 13. Service provider networks need to support thousands of customer VPNs concurrently.
Designing and Implementing IP MPLS-Based Ethernet Layer 2 VPN Services: An Advanced Guide for VPLS and VLL by Zhuo Xu