| 摘要 |
<p>The present invention relates to the field of communications. Disclosed are a method, a device and a system for establishing and using a floating network segment. Active and standby network core side PEs are established. The active and standby network core side PEs are connected to a user side PE through active and standby virtual links, and the active network core side PE allocates a floating network segment corresponding to the virtual link to a user equipment communicating with the user side PE; the active network core side PE copies and saves allocation information of the floating network segment to the standby network core side PE; when the active virtual link is faulty, a remote router communicates with the user equipment through the standby network core side PE and the floating network segment corresponding to the standby virtual link.</p> |
