Overview of IP Network Survivability
IP网络生存性研究综述

Optical network survivability has been a hot topic of research for a long time. However, it is only recently that network survivability has attracted the attention of large research community. The growth of business-critical applications is the primary driver behind this increased interest in network protection and restoration. MPLS network is connection-oriented and is the protection and restoration mechanism is easy to be configured. But most IP networks are not updated to support MPLS, so it is meaningful to study the survivability of pure IP network. There are many challenges for IP network survivability which are generalized in the paper above all. And then research on different IP network survivability and the coordination with lower layer survivability are concluded, especially the state of the art for pure IP network is introduced in detail. Finally it is indicated that IP fast rerouting is potentially efficient for implementation, the recovery and QoS considered together in MPLS network is preferred and multi-layer resilience would be the hot topic in the future.