MPLS LDP协议支持不间断路由特性的研究与实现
发布时间：2018-11-23 11:18
【摘要】：随着因特网的发展,用户对网络可靠性的要求也越来越高。NSF(Non-Stop Forwarding:不间断转发)是一项重要的HA(High Availability:高可靠性)技术。它可以保证路由器控制层面出现故障时,数据转发仍然正常进行,从而保证业务短时间内不中断。而NSR(Non-Stop Routing:不间断路由)是比NSF可靠性更高的一种技术,它在NSF的硬件结构基础上增加了软件层面的备份机制。NSF虽然可以保证数据转发的持续性,但无法保证故障期间转发表的正确性,而NSR的目标是始终保持转发的可用性与正确性,最小化本端故障给网络业务造成的影响。 MPLS(Multi-Protocol Label Switching)是一种在骨干网中广泛使用的交换技术,使用标签标识转发路径,可以在无连接的网络中引入连接模式的优点。LDP(Label Distribution Protocol)是MPLS的一种控制平面协议,负责为MPLS网络生成标签转发路径。本课题来源于某公司‘'MPLS LDP模块支持NSR特性”项目,本文详细分析了其可行性原理与LDP各运行数据在批量备份和实时备份下的必要性与时机,给出了一种解决方案并测试验证了其有效性。
[Abstract]:With the development of Internet, the requirement of network reliability is becoming higher and higher. (. NSF (Non-Stop Forwarding: uninterrupted forwarding) is an important HA (High Availability: high reliability) technology. It can ensure that the router control level failure, the data forwarding is still normal, so as to ensure that the service will not be interrupted in a short period of time. NSR (Non-Stop Routing: uninterrupted routing) is a technology with higher reliability than NSF. It adds software backup mechanism to the hardware structure of NSF. NSF can guarantee the continuity of data forwarding. However, it is impossible to guarantee the correctness of forwarding table during failure, and the goal of NSR is to keep the availability and correctness of forwarding at all times, and to minimize the impact of local failure on network services. MPLS (Multi-Protocol Label Switching) is a kind of switching technology widely used in backbone network. The advantage of using label to identify forwarding path and introducing connection mode in connectionless network is that. LDP (Label Distribution Protocol) is a kind of control plane protocol of MPLS. Responsible for generating tag forwarding path for MPLS network. This topic comes from a company 'MPLS LDP module supporting NSR feature' project. This paper analyzes its feasibility principle and the necessity and opportunity of LDP running data in batch backup and real time backup. A solution is presented and tested to verify its effectiveness.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.06
本文编号：2351398
[Abstract]:With the development of Internet, the requirement of network reliability is becoming higher and higher. (. NSF (Non-Stop Forwarding: uninterrupted forwarding) is an important HA (High Availability: high reliability) technology. It can ensure that the router control level failure, the data forwarding is still normal, so as to ensure that the service will not be interrupted in a short period of time. NSR (Non-Stop Routing: uninterrupted routing) is a technology with higher reliability than NSF. It adds software backup mechanism to the hardware structure of NSF. NSF can guarantee the continuity of data forwarding. However, it is impossible to guarantee the correctness of forwarding table during failure, and the goal of NSR is to keep the availability and correctness of forwarding at all times, and to minimize the impact of local failure on network services. MPLS (Multi-Protocol Label Switching) is a kind of switching technology widely used in backbone network. The advantage of using label to identify forwarding path and introducing connection mode in connectionless network is that. LDP (Label Distribution Protocol) is a kind of control plane protocol of MPLS. Responsible for generating tag forwarding path for MPLS network. This topic comes from a company 'MPLS LDP module supporting NSR feature' project. This paper analyzes its feasibility principle and the necessity and opportunity of LDP running data in batch backup and real time backup. A solution is presented and tested to verify its effectiveness.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.06
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