Availability-Aware survivable routing architecture for GMPLS Networks

通用多协议标签交换(GMPLS)为网络运营商提供了强大的流量工程工具和丰富的服务等级(CoS)，被公认为是下一代以IP为中心的运营商网络的最佳候选者。GMPLS支持的最重要的功能之一是其性能多层保护和恢复的能力，从而可以根据服务等级协议(SLA)来保证每个标签交换路径(LSP)的端到端(E2E)服务可用性。以往关于服务可用性和生存性的研究大多集中在特定保护方案下或在考虑给定数目的网络同时故障的情况下冗余分配的效率。然而，最能解决可用性感知设计的可生存路由和空闲容量分配的通用框架从未被报道过。因此，本项目致力于通过培养一批研究人员和工程师来解决这一问题，在基于GMPLS的恢复框架下引入和研究新型的可用性感知可生存路由体系结构。将对与拟议框架合作的制定的战略和方案进行洞察力研究和评估，这些战略和方案可以在我们的行业合作伙伴贝尔加拿大公司的运营商网络中进行。

Generalized Multi-Protocol Label Switching (GMPLS) provides network operators with a strong tool in traffic engineering and abundant Classes of Service (CoS), and has been well recognized as the best candidate for the next generation IP-centric carrier networks. One of the most important functions supported by GMPLS is its ability in performance multilayer protection and restoration such that the End-to-End (E2E) service availability of each Label Switched Path (LSP) could be guaranteed according to the service level agreement (SLA). The previously reported studies on service availability and survivability have mostly focused on the efficiency in the redundancy allocation upon a specific protection scheme or under the consideration of a given number of simultaneous failures in networks. A general framework for survivable routing and spare capacity allocation that can best address the availability-aware design, however, has never been reported. Thus, this project is committed to solve this problem by bringing up a group of researchers and engineers, to introduce and investigate novel availability-aware survivable routing architecture under the framework of GMPLS-based recovery. Insight research and evaluation will be conducted upon the developed strategies and schemes cooperating with the proposed framework, which could be exercised in the carrier network of our industry partner - Bell Canada.