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 9. EEM-Based Deployment Models
In the Multiple Spanning Tree (MST)-based solutions described in Chapter 8, “MST-Based Deployment Models,” redundant access to Virtual Private LAN Service (VPLS) nodes is achieved via the use of Spanning Tree Protocol (STP) to manage the state of links that connect aggregation switches toward the VPLS node, the Network-facing Provider Edge (N-PE).
This chapter describes a solution that provides a combination of high availability in terms of link and node redundancy, scalability based on 802.1Q in 802.1Q (QinQ) technology, and overlapping VLANs.
This chapter also describes various Embedded Event Manager (EEM)-based solutions that provide N-PE redundancy. It discusses deployment scenarios in which pseudowires ...
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