| 摘要 |
<p>The present invention provides a method and device for protecting virtual private local area network service (VPLS) multicasts. The method comprises: after a failure occurs in the link between a main device and a data message sending end, a backup device receives a data message from the data message sending end and forwards said data message to said main device; and said main device forwards said data message from the said backup device to a data message receiving end through a main point to multipoint (P2MP) tree. The present invention also provides another method and device for protecting VPLS multicasts. The method comprises: after a failure occurs in a main device, a backup device receives a data message from a data message sending end, and forwards said data message to a data message receiving end through a backup P2MP tree or a trimmed VPLS network. The present invention therefore can protect the entry provider edge router (PE) and the link between the entry PE and the customer edge router (CE).</p> |
