Method and apparatus for protection switching in virtual private networks
AssigneeBoyle Phosphorus LLC
InventorsDongsoo S. Kim, Antonio Ruiz, Dhadesugoor R. Vaman, Joonbum Byun
Life of this patent
Estimating the term…
Abstract
Protection switching of a virtual private network is provided whereby working VPN paths and protection VPN paths are defined. The working VPN path is monitored for increased data traffic and failures, and in response, data is switched from the working VPN path to the protection VPN path. The working VPN path is monitored for a return to proper functioning and normal data conditions, and data is then switched back from the protection VPN path to the working VPN path. Additionally, data capacity is managed through virtual bandwidth classes, and different classes of qualities of service are provided.
Claims23
A method for implementing protection switching for a virtual private network comprising the steps of:
- establishing a working virtual private network path and a protection virtual private network path between a first edge node and a second edge node;
- detecting traffic congestion in the working virtual private network path;
- and
- switching traffic from the working virtual private network path to the protection virtual private network path when detected traffic congestion in the working virtual private network path exceeds a predetermined threshold.
An apparatus for protection switching of a virtual private network comprising:
- a working virtual private network path connected between a first edge node and a second edge node;
- a protection virtual private network path connected between the first edge node and the second edge node;
- a congestion detector;
- and
- a data switch,
- wherein when data is transmitted across the working virtual private network path, said congestion detector detects traffic congestion on said working virtual private network path and said data switch switches said data from said working virtual private network path to said protection virtual private network path when said traffic congestion exceeds a predetermined threshold, thereby ensuring continuous transmission of said data across said virtual private network.
Dependencies are inferred from the claim text.