| 摘要 |
This invention discloses a method for determining the relationship of a Customer Edge Router (CE) with a Virtual Private Networking (VPN), which comprises: assigning in advance for each CE device at least one Route Target (RT) value to form the RT table of the CE, creating CE Route Communities (CERC) in the network management and assigning for each created CERC a Hub RT value and a Spoke RT value. The method further comprises: dividing the RT table of the current CE to be matched with a CERC into an import RT table and an export RT table according to the import/export attributes of the RT values, and determining whether the CE belongs to the designated CERC and whether the CE is a Hub CE or a Spoke CE in the CERC according to the RT values in the import RT table and export RT table obtained as well as the Hub RT value and Spoke RT value assigned to the designated CERC. With the method, the relationship between a CE and a CERC as well as the type of the CE in the CERC can be learned by a reverse deduction based on the RT tables known on the network so that VPN information can learn from the network management. Accordingly, less human effort is involved and cost of network maintenance greatly decreased. |
