在备份路径预建立的前提下,提出了一种MPLS的故障恢复方案——EB,该方案在现有的Bridge模型基础上引入了Backpressure信令以解决分组失序问题。理论性能评估及仿真实验均表明,EB较好地继承了Bridge方案原有的优势,并且解决了分组失序问题。经综合评估,EB有着良好的恢复性能。
On condition that the backup path has been pre-established, a scheme named EB for MPLS-based recovery is present, which introduced Backpressure signaling mechanism to Bridge scheme in order to eliminate the packet reordering. Both theoretical analyses and simulation results indicate that EB scheme not only preserve advantages of Bridge but also solve the packet reordering. Generally eyaluating shows EB has good performance.