5 December 2005 A new approach to build VPLS with auto-discovery mechanism
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Proceedings Volume 6022, Network Architectures, Management, and Applications III; 60222W (2005) https://doi.org/10.1117/12.634018
Event: Asia-Pacific Optical Communications, 2005, Shanghai, China
Abstract
VPLS is the key technology implemented to provide Layer 2 bridge-like services, connecting dispersed locations to work in a switched LAN over an MPLS backbone. However, implementing VPLS requires creating a complex matrix of services and locations that quickly becomes difficult to configure and maintain. To address this complexity, this paper proposes a new approach to automate the configuration and maintenance of VPLS networks, a node-discovery process in which each router advertises its VPLS-enabled status and capabilities to all other routers. Our approach can be summarized into four steps. (1) Discover other VPLS PE nodes with VPLS capabilities and create the VPLS capable PE routers list. We introduce a finite state machine which includes four states to illustrate the process how a VPLS peer can be discovered and the peer relations be kept alive. (2) Build MPLS LSP tunnels to all the PE routers in the list, according to the advertised VPLS protocol capabilities. (3) Use the lists to create targeted-LDP sessions for VPLS services discovery. (4) VC label assignment. The PE edge routers exchanges messages to define VC labels and bind them with each built PWE. The suggested auto-discovery mechanism is sensitive to any service provider's topology change and customer's service modification. The dynamic process for the FIB building, MAC address learning and withdrawal, is also covered as the result of VPLS auto-discovery. The suggested mechanism can be implemented as a software module and could be seamlessly integrated with currently deployed Metro Ethernet routing and switching platform.
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Ximing Dong, Shaohua Yu, "A new approach to build VPLS with auto-discovery mechanism", Proc. SPIE 6022, Network Architectures, Management, and Applications III, 60222W (5 December 2005); doi: 10.1117/12.634018; https://doi.org/10.1117/12.634018
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