Generation of a configuration patch for network devices

• US 7,865,578 B1
• Filed: 11/20/2006
• Issued: 01/04/2011
• Est. Priority Date: 08/19/2002
• Status: Active Grant

• Current Assignee: Juniper Networks Incorporated
• Original Assignee: Juniper Networks Incorporated
• Inventors: Gerraty, Simon J.
• Primary Examiner(s): Dollinger; Tonia L
• Assistant Examiner(s): Nguyen; Steven C
• Application Number:
  US11/561,748
• Time in Patent Office: 1,506 Days
• Field of Search: 709213-216, 709/220, 713/1, 717/168
• US Class Current: 709/220
• CPC Class Codes: H04L 12/40013 Details regarding a bus controller
• CPC Class Codes: H04L 41/082 the condition being updates or upgrades of network functionality
• CPC Class Codes: H04L 45/02 Topology update or discovery
• CPC Class Codes: H04L 45/563 Software download or update

Abstract

In general, this disclosure relates to techniques for allowing multiple clients to concurrently configure a network device. More specifically, a management module creates a working copy of an initial data source that stores configuration data for a network device and modifies the working copy to reorder one or more configuration objects in a list in response to configuration commands from a client. Upon receiving a show|compare command or a commit command, the management module generates a configuration patch that is a textual representation of any differences between the working copy and the initial data source. The configuration patch includes modification control indicators that identify configuration objects in the list that are reordered. The patch is applied to the initial data source to reorder the list of configuration objects within the initial data source without processing portions of the configuration data associated with the reordered configuration.

Claims

1. A method for configuring a network device comprising:

creating a working copy of an initial data source that stores configuration data for a network device, wherein the working copy includes a set of configuration objects logically arranged in an order, and wherein each of the configuration objects is associated with respective configuration data;

in response to a reorder command from a client, modifying the working copy to reorder one or more of the configuration objects;

generating a configuration patch that is a textual representation of any differences between the working copy and the initial data source, wherein the configuration patch includes one or more modification control indicators that identify each of the configuration objects that has been reordered and for which the respective configuration data of the configuration object is unchanged; and

applying the configuration patch to the initial data source to reorder the identified configuration objects within the initial data source without processing the respective configuration data associated with the configuration objects identified by the modification control indicators.

2. The method of claim 1, wherein the working copy comprises a shared data source editable by a plurality of clients, and modifying the working copy comprises:

receiving configuration commands from the plurality of clients; and

modifying the shared data source in response to the configuration commands.

3. The method of claim 1, wherein creating the working copy of the initial data source comprises creating the working copy of the initial data source in response to receiving a command from the client to configure the network device in a private configuration mode, wherein the working copy is a private data source editable by only the requesting client.

4. The method of claim 1, wherein generating the configuration patch comprises generating the configuration patch to include context identifiers that indicate locations within the initial data source for the reordered configuration objects.

5. The method of claim 4, wherein generating the configuration patch comprises generating the configuration patch to include at least one of leading and trailing context identifiers to indicate locations prior to and subsequent to the reordered configuration objects.

6. The method of claim 1, further comprising:

receiving a command to view any differences between the working copy and the initial data source; and

generating the configuration patch in response to the command.

7. The method of claim 1, further comprising:

receiving a commit command from the client directing the network device to apply modifications made in the working copy; and

generating the configuration patch in response to receiving the commit command from the client.

8. The method of claim 1, wherein the configuration patch further includes one or more modification control indicators that identify configuration objects within the configuration data that are added or deleted, and further comprising:

applying the configuration patch to the initial data source to add or delete the configuration objects within the initial data source; and

processing portions of the configuration data associated with the added configuration objects.

9. The method of claim 1, wherein generating a configuration patch comprises:

creating a temporary copy of the working copy;

comparing the initial data source to the temporary copy to generate a list of updated configuration objects; and

generating the configuration patch to list the updated configuration objects.

10. The method of claim 1, further comprising:

modifying the working copy to update the configuration data associated with one or more of the reordered configuration objects, wherein the configuration patch includes one or more modification control indicators that identify the configuration objects that have been updated; and

applying the configuration patch to the initial data source to update the configuration data associated with the reordered configuration objects identified by the modification control indicators that identify the configuration objects that have been updated; and

processing the respective configuration data associated with the updated configuration objects.

11. The method of claim 1, wherein the reorder command is representative of:

(1) a rearranging of a list of name servers without changing a configuration of the name servers, or

(2) a rearranging of a list of radius servers without changing a configuration of the radius servers, or

(3) a rearranging of an order in which rules of two or more filters are applied without changing a configuration of the filters.

14. The network device of claim 11, wherein the working copy comprises a shared data source editable by a plurality of clients.

15. The network device of claim 11, wherein the management module receives a command to configure the network device in a private configuration mode, and creates the working copy as a private data source editable by a single client in response to the command.

16. The network device of claim 11, wherein the management module generates the configuration patch to include context identifiers that indicate locations within the initial data source for the reordered configuration objects.

17. The network device of claim 14, wherein the management module generates the configuration patch to include at least one of leading and trailing context identifiers to indicate locations prior to and subsequent to the reordered configuration objects.

18. The network device of claim 11, wherein the management module receives a command to view any differences between the working copy and the initial data source, and generates the configuration patch in response to the command.

19. The network device of claim 11, wherein the management module receives a command directing the network device to apply the modifications made in the working copy and generates the configuration patch in response to receiving the command.

20. The network device of claim 11, wherein the configuration patch further includes one or more modification control indicators that identify configuration objects that are added or deleted, and further wherein the management module applies the configuration patch to the initial data source to add or delete the configuration objects within the initial data source and processes portions of the configuration data associated with the added configuration objects.

21. The network device of claim 11, wherein the management module creates a temporary copy of the working copy, compares the initial data source to the temporary copy to generate a list of updated configuration objects, and generates the configuration patch to list the updated configuration objects.

12. A network device comprising:

a hardware-implemented processor;

an initial data source that stores configuration data for the network device; and

a management module executing on the processor that generates a configuration patch that is a textual representation of any differences between a working copy of the initial data source and the initial data source, wherein the configuration patch includes one or more modification control indicators that identify configuration objects that have been reordered and for which respective configuration data is unchanged,

further wherein the management module applies the configuration patch to the initial data source to reorder the identified configuration objects within the initial data source without processing the respective the configuration data associated with the reordered configuration objects identified by the modification control indicators.

13. The network device of claim 12, wherein:

the one or more modification control indicators that identify configuration objects that have been reordered and for which respective configuration data is unchanged comprise a first patch block, and further comprising a second patch block within the configuration patch that includes one or more modification control indicators that identify configuration objects that have been updated, and

the management module applies the second patch block to the initial data source to update the configuration data associated with the updated configuration objects and processes the respective configuration data associated with the updated configuration objects.

22. A non-transitory computer-readable medium comprising instructions that cause a processor to:

create a working copy of an initial data source that stores configuration data for a network device, wherein the working copy comprises a shared data source editable by a plurality of clients, and wherein the working copy includes a set of configuration objects logically arranged in an order, and each of the configuration objects is associated with respective configuration data;

receive configuration commands from the plurality of clients;

modify the working copy to reorder one or more of the configuration objects in response to commands received from the client;

generate a configuration patch that is a textual representation of any differences between the working copy and the initial data source, wherein the configuration patch includes one or more modification control indicators that identify the configuration objects that have been reordered and for which the respective configuration data is unchanged; and

apply the configuration patch to the initial data source to reorder the list of configuration objects within the initial data source without processing portions of the configuration data associated with the reordered configuration objects identified by the modification control indicators.