June 2009
Intermediate to advanced
384 pages
8h 20m
English
book
Interconnecting Data Centers Using VPLS (Ensure Business Continuance on Virtualized Networks by Implementing Layer 2 Connectivity Across Layer 3)
by Nash Darukhanawalla - CCIE No. 10332, Patrice Bellagamba
Content preview from Interconnecting Data Centers Using VPLS (Ensure Business Continuance on Virtualized Networks by Implementing Layer 2 Connectivity Across Layer 3)
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Chapter 10. GRE-Based Deployment Model
Typically, Ethernet over Multiprotocol Label Switching (EoMPLS) and Virtual Private LAN Service (VPLS) technologies have required an MPLS switching core for Layer 2 extension over long distances. When the core network is not dedicated for Layer 2 virtual private network (L2VPN) extension, migrating an existing IP core to MPLS can be complex. Also, MPLS and its related technologies require expertise for deployment and maintenance. To ease the adoption of Layer 2 extension, Cisco offers solutions to encapsulate EoMPLS or VPLS traffic over generic routing encapsulation (GRE) tunnels. These solutions allow transporting all Layer 2 traffic across data centers over the existing IP core. EoMPLS/VPLS over GRE is ...
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