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    • 4. 发明公开
    • PROTECTING MULTI-SEGMENT PSEUDOWIRES
    • SCHUTZ MEHRSEGMENTERPSEUDODRÄHTE
    • EP2057544A4
    • 2012-06-27
    • EP07852511
    • 2007-10-03
    • CISCO TECH INC
    • GUICHARD JIMMARTINI LUCAPATEL KEYURNADEAU THOMAS DAVID
    • H04L12/56
    • H04L45/04H04L1/22H04L45/22H04L45/28H04L45/42H04L45/44H04L45/50H04L45/68
    • The protection of multi-segment pseudowires by utilizing pre-computed backup paths is disclosed herein. Disclosed embodiments include methods that establish at least one backup path for multi-segment pseudowires, the establishing being performed prior to detection of failure in the primary path. Upon detecting a path failure, the detected failure is signaled to the head-end, a pre-computed backup path is chosen, and the chosen backup path is signaled to the tail-end. In other disclosed embodiments, apparatus are configured to establish, prior to detection of failure in the primary path, at least one backup path for the multi-segment pseudowire. Networks can be configured to signal a detected failure to the head-end; choose a pre-computed backup path; and signal the backup path to the tail-end.
    • 本文公开了通过利用预先计算的备用路径来保护多段伪线。 公开的实施例包括为多段伪线建立至少一个备用路径的方法,该建立是在检测到主路径中的故障之前执行的。 在检测到路径故障时,将检测到的故障信号发送到前端,选择预先计算的备份路径,并将选择的备份路径发送到尾端。 在其他公开的实施例中,设备被配置为在检测到主路径中的故障之前建立用于多段伪线的至少一个备用路径。 网络可以配置为将检测到的故障发信号到头端; 选择预先计算的备份路径; 并将后备路径指示给尾端。