| 摘要 |
<p>Disclosed in the embodiments of the invention are a method and an apparatus for maintaining connectivity of transmission lines, which belong to the field of communications and improve the reliability of network services. The method in the embodiments of the invention includes: a backup forwarding device receives backup information of tunnel transmission information for primary transmission lines transmitted by a primary forwarding device; when the primary transmission line, in which the primary forwarding device is located, is in failure, according to the backup information, the backup forwarding device encapsulates the data packet of the remote user and transmits the encapsulated data packet to the private network system, or encapsulates the data packet of the private network system and transmits the encapsulated data packet to the remote user; the primary transmission lines include the transmission line between the primary forwarding device and the remote user, and the transmission line between the primary forwarding device and the private network system. The invention is mainly used for the switching between the primary tunnel and the backup tunnel in the communication network.</p> |
