| 摘要 |
<p>The present invention discloses a two-layer forwarding method for a Pseudo Wire (PW) service. The method includes: a preprocessing module writes an encapsulation table and a label table according to PW information, and a routing module writes a Media Access Control (MAC) table according to the PW information; the preprocessing module and the routing module execute message forwarding from a Client Edge (CE) to a Provider Edge (PE) according to the encapsulation table and the MAC table, and execute message forwarding from the PE to the CE according to the label table and the MAC table. Accordingly, the present invention also discloses a two-layer forwarding system for a PW service. The preprocessing module shares processing capability of a network processor which is usually used as the routing module, and the network processor only executes ordinary two-layer service forwarding, so the present invention can improve the processing speed of the network processor and ensure easy maintenance.</p> |
