| 摘要 |
Disclosed is a method for establishing broadcasting domain in a Layer 2 Virtual Private Network (L2VPN). The method comprises the following steps: when packets are received from Attachment Circuit (AC), Virtual Bridge Domain (VBD) Index (ID) of packets is found out according to AC attribute table. If the exit cannot be acquired from a forwarding table according to VBD ID and destination Media Access Control (MAC) address of packets, then the packets will be encapsulated based on the encapsulation principle and sent out of the VBD exit acquired from VBD table by VBD ID. When packets are received from Pseudo Wire (PW), if the exit cannot be acquired from the forwarding table according to VBD ID and destination MAC of packets, then the packets will be de-capsulated based on the de-encapsulation principle and sent out of the VBD exit acquired from VBD table by VBD ID. An apparatus for establishing broadcasting domain of L2VPN is also disclosed. The present invention enables reduce the quality of configuring PW and save the internal bandwidth of Provider Edge (PE). |
