Patent ID: 7957375

Claim:
A method for policy routing, comprising: A. pre-configuring policy routing to a label switching path, obtaining and saving forwarding information; B. forwarding a packet according to the forwarding information; and C. refreshing the forwarding information of the policy routing to the label switching path; wherein the refreshing the forwarding information of the policy routing to the label switching path in Step C is implemented in a label switching path unit trigger mode and further comprises: C21. transmitting, by a label switching path managing unit, an information updating message to a node of policy; C22. determining, by the node of policy, whether a policy routing is configured to the label switching path or not according to the received information updating message; if yes, proceeding to Step C23, and otherwise, ending the process; C23. obtaining the forwarding information of the label switching path from the node of policy; C24. updating the forwarding information of the label switching path saved in the node of policy; and C25. delivering the forwarding information of the label switching path to interface boards.