| 摘要 |
<p>A method for updating the cut-in of VPDN dynamically comprises after detecting some faults in a master network server, the wideband accessing server of the said aggregation layer removes the tunnel connection with the master network server. The wideband accessing server transmits a tunnel connection estabilishing request to an backup network server according to the network server configuration information acquired by the authentication of a wideband VPDN subscriber. After receiving a network negotiation protocol message, the wideband accessing server of the said aggregation layer uses a local PPP to record an IP address assigned by the backup network server. The communication message of the subsequent wideband VPDN subscriber have been mapped between the a PPP port and the IP address, and then uses the L2TP to set up the tunnel connection. The method improves the reliability and QoS of the VPDN subscriber access connection, and reduces tunnel working load of the wideband cut-in server.</p> |
