Patent ID: 8289967
Filing Date: 2012-10-16
Classification: H04L

Abstract:
1. A packet forwarding method, comprising: receiving a packet from a switch board; acquiring an input port number of the packet, looking up a forwarding policy table to acquire an output port number and a cascade port number corresponding to the input port number; forwarding the packet to a cascade board via a port corresponding to the cascade port number; and forwarding the packet to a port corresponding to the output port number; wherein the forwarding policy table comprises a “packet input port bitmap”, a Virtual Local Area Network (VLAN) broadcast enabled/disabled, and a “packet output port bitmap”, the “packet input port bitmap” stores the input port number, and the “packet output port bitmap” stores the output port number and the cascade port number corresponding to the input port number; wherein the looking up the forwarding policy table to acquire the output port number and the cascade port number corresponding to the input port number comprises: looking up the “packet input port bitmap” according to the input port number to acquire a control identifier of the input port number; and looking up the corresponding “packet output port bitmap”, if the control identifier of the input port number is True and the corresponding “VLAN broadcast enabled/disabled” is False, and acquiring the corresponding output port number and the corresponding cascade port number.