Method for provisioning a permanent virtual circuit in an ATM network
View Patent ↗A permanent virtual circuit (PVC) over an ATM network is provisioned by using a deterministic PVC addressing scheme for computing a unique combination of VPI and VCI values based on certain input parameters associated with the network to which the PVC is logically connected. Specifically, the VPI and VCI of a PVC are deterministically computed as a known function of numerical values of particular network elements associated with the network and the particular PVC being provisioned using a function that enables the values of these network elements to be uniquely determined from the VPI and VCI of the PVC. Thus, once the VPI and VCI are determined for a PVC, the particular network elements associated with that PVC can be unambiguously identified from their values.
1. A method of provisioning a permanent virtual circuit (PVC) in an ATM network having associated network elements, the method comprising:
deterministically computing a virtual path identifier (VPI) and a virtual channel identifier (VCI) for the PVC as a known function of numerical values associated with one or more particular ones of the network elements, wherein the numerical values associated with the particular network elements are uniquely backwardly determinable from the VPI and VCI of the PVC; and
outputting the VPI and the VCI for the PVC.
2. The method of claim 1 wherein binary values associated with the particular network elements are embedded in the VPI and VCI in predetermined bit positions.
3. The method of claim 1 wherein decimal values associated with the particular network elements are embedded in the VPI and VCI in predetermined decimal positions, the decimal values associated with the selected network elements being visually determinable from the decimal values of the VPI and VCI.
4. An ATM network having associated network elements, the ATM network comprising:
a permanent virtual circuit (PVC) including a virtual path identifier (VPI) and a virtual channel identifier (VCI) deterministically computed as a known function of numerical values associated with one or more particular ones of the network elements, wherein the numerical values associated with the particular network elements are uniquely backwardly determinable from the VPI and VCI of the PVC.
5. The ATM network of claim 4 , wherein binary values associated with the particular network elements are embedded in the VPI and VCI in predetermined bit positions.
6. The ATM network of claim 4 , wherein decimal values associated with the particular network elements are embedded in the VPI and VCI in predetermined decimal positions, the decimal values associated with the selected network elements being visually determinable from the decimal values of the VPI and VCI.
7. A computer readable media tangibly embodying a program of instructions executable by a computer to perform a method for determining a virtual path identifier (VPI) and a virtual channel identifier (VCI) for a permanent virtual circuit (PVC) in an ATM network having associated network elements, the method comprising:
deterministically computing the VPI and the VCI as a known function of numerical values associated with one or more particular ones of the network elements, wherein the numerical values associated with the particular network elements are uniquely backwardly determinable from the VPI and VCI of the PVC; and
outputting the VPI and the VCI for the PVC.
8. The media of claim 7 wherein in the method the VPI and VCI are computed by embedding binary values associated with the particular network elements in predetermined bit positions of the VPI and VCI.
9. The media of claim 7 wherein in the method the VPI and VCI are computed by embedding decimal values associated with the particular network elements decimal values in predetermined decimal positions of the VPI and VCI.