Model-based method and apparatus for determining MPLS network properties
View Patent ↗Embodiments of the present invention are directed to a method and apparatus for the identification or discovery for properties of MPLS networks through a modeling technique. Aspects of the present invention provide for discovering or identifying the Label Switched Paths in MPLS networks. The method comprises the steps of representing a network by a model comprising a plurality of configuration non-specific first object classes that are representations of types of components associated with the network components, and a plurality of configuration non-specific second object classes that are representations of relationships among the representation of types of component, identifying instances of a first one and a second one of the types of components object class, and identifying the label switch path by traversing the instances of the first and second types of components object classes through select ones of the relationship object classes associated with the first and second type of components object classes.
1. A method for identifying label switched paths in an MPLS network comprised of a plurality of component nodes, the nodes possessing an identification, at least one input port, at least one output port, and at least one forwarding table containing label swapping entries, the method comprising the steps of:
a. representing, on one or more computers, the network by a model comprising:
a. a plurality of configuration non-specific first object classes that are representations of types of components associated with the MPLS network; where the configuration non-specific representations of types of components is selected from the group consisting of: LSPTermination, LSPHop, LSP, LSPOutSegment, LSPInSegment; and
b. a plurality of configuration non-specific second object classes that are representations of relationships among the representation of types of components associated with the MPLS network; wherein the configuration non-specific representation of relationships among the representation of types of components is selected from the group consisting of: PreviousHop/NextHop, SwitchedFrom/SwitchedTo, FirstHop, Connected PE;
b. identifying instances of a first one and a second one of the types of components object class; and
c. identifying the label switched paths by traversing the instances of the first and second types of components object classes through select ones of the relationship object classes associated with the first and second type of components object classes.
2. The method as recited in claim 1 , wherein the instances of the first types of components class comprises
component identification, output port and forwarding table label.
3. The method as recited in claim 1 , wherein the instances of the second types of components class comprises:
component identification and forwarding table labels.
4. The method as recited in claim 1 , wherein the instances of the second types of components class comprises:
component identification, input port and forwarding table label.
5. The method as recited in claim 1 , further comprising the step of:
storing a representation of the identified label switched paths.
6. The method as recited in claim 1 , further comprising the step of:
displaying the representation of the identified label switched paths.
7. The method as recited in claim 1 , further comprising the step of:
displaying details of the identified label switched paths.
8. The method as recited in claim 1 , wherein the step of identifying instances is performed dynamically.
9. The method as recited in claim 1 , wherein the object class instance identification is predetermined.
10. A apparatus for identifying label switched paths in an MPLS network comprised of a plurality of component nodes, said nodes having an identification, at least one input port, at least one output port, and at least one forwarding table containing label swapping entries, the apparatus comprising:
a processor in communication with a memory, said processor executing code for:
a. representing the network by a model comprising:
a. a plurality of configuration non-specific first object classes that are representations of types of components associated with the MPLS network; where the configuration non-specific representations of types of components is selected from the group consisting of: LSPTermination, LSPHop, LSP, LSPOutSegment, LSPInSegment; and
b. a plurality of configuration non-specific second object classes that are representations of relationships among the representation of types of components associated with the MPLS network: wherein the configuration non-specific representation of relationships among the representation of types of components is selected from the group consisting of: PreviousHop/NextHop, SwitchedFrom/SwitchedTo, FirstHop, Connected PE;
b. identifying instances of a first one and a second one of the types of components object class; and
c. identifying label switched paths by traversing the instances of the first and second types of components object classes through selected ones of the relationship object classes associated with the first and second types of components object classes.
11. The apparatus as recited in claim 10 , wherein the instances of the first types of components class comprise:
component identification, output port and forwarding table label.
12. The apparatus as recited in claim 10 , wherein the instances of the second types of components class comprise:
component identification and forwarding table labels.
13. The apparatus as recited in claim 10 , wherein the instances of the second types of components class comprise:
component identification, input port and forwarding table label.
14. The apparatus as recited in claim 10 , the processor further executing code for:
storing a representation of the identified label switched paths.
15. The apparatus as recited in claim 10 , the processor further executing code for:
displaying the representation of the identified label switched paths.
16. The apparatus as recited in claim 10 , the processor further executing code for:
displaying details of the identified label switched paths.
17. The apparatus as recited in claim 10 , wherein the step of identifying instances is performed dynamically.
18. The apparatus as recited in claim 10 , wherein the object class instance identification is predetermined.
19. The apparatus as recited in claim 10 , further comprising:
an input/output device in communication with the processor and the memory.
20. The apparatus as recited in claim 10 , wherein the code is stored in the memory.
21. A computer readable storage medium encoded with code thereon, the code suitable for identifying label switched paths in an MPLS network comprised of a plurality of component nodes, said nodes having an identification, at least one input port, at least one output port, and at least one forwarding table containing label swapping entries, the code providing instructions to a computing system for executing the steps of:
a. representing the network by a model including:
a plurality of configuration non-specific first object classes that are representations of types of components associated with the MPLS network; where the configuration non-specific representations of types of components is selected from the group consisting of:
LSPTermination, LSPHop, LSP, LSPOutSegment, LSPInSegment; and
a plurality of configuration non-specific second object classes that are representations of relationships among the representation of types of components associated with the MPLS network; wherein the configuration non-specific representation of relationships among the representation of types of components is selected from the group consisting of: PreviousHop/NextHop, Switched From/SwitchedTo, FirstHop, Connected PE;
b. identifying instances of a first one and a second one of the types of components object class; and
c. identifying the label switch path by traversing the instances of the first and second types of components object classes through select ones of the relationship object classes associated with the first and second type of components object classes.
22. The computer readable storage medium as recited in claim 21 , wherein the instances of the first types of components class comprises
component identification, output port and forwarding table label.
23. The computer readable storage medium as recited in claim 21 , wherein the instances of the second types of components class comprises:
component identification and forwarding table labels.
24. The computer readable storage medium as recited in claim 21 , wherein the instances of the second types of components class comprises:
component identification, input port and forwarding table label.
25. The computer readable storage medium as recited in claim 21 , the code further providing instructions to a computing system for executing the steps of:
storing a representation of the identified label switched paths.
26. The computer readable storage medium as recited in claim 21 , the code further providing instructions to a computing system for executing the steps of:
displaying the representation of the identified label switched paths.
27. The computer readable storage medium as recited in claim 21 , the code further providing instructions to a computing system for executing the steps of:
displaying details of the identified label switched paths.
28. The computer readable storage medium as recited in claim 21 , wherein the step of identifying instances is performed dynamically.
29. The computer readable storage medium as recited in claim 21 , wherein the object class instance identification is predetermined.