Patent Document ID: 20050286441
Application ID: 11184727
Patent Flag: 0

Claim One:
1. A method for determining the relationship of a Customer Edge Router (CE) with a Virtual Private Network (VPN), comprising: assigning in advance at least one Route Target (RT) value for each CE device to form the RT table of the said CE, and assigning Hub RT values and Spoke RT values for more than one created CE Route Community (CERC), wherein the method further comprises the following steps: a. Dividing the RT table of the current CE to be matched with a designated CERC into an import RT table and an export RT table based on the import/export attribute of the RT values; b. Determining the home attribute of the current CE to be matched based on the RT values in the said import RT table and export RT table obtained in Step a as well as the Hub RT value and Spoke RT value assigned to the designated CERC.