Generating metrics for networked devices

1. A method of generating performance data for network devices comprising:

associating tags with communication points of network devices conditioned on whether the network device belongs to a group of network devices, each tag indicating at least one group of network devices to which the network device associated with the communication point belongs;

compiling, by at least one computer, performance data for at least one group of network devices over a particular time period by (1) identifying communication points that, during the particular time period, had a tag that identifies the at least one group of network devices, (2) determining, for each of the identified communication points, a part of the particular time period during which the identified communication point was associated with a tag that identifies the at least one group of network devices, (3) gathering, for each communication point identified as belonging to the at least one group of network devices, performance data based on performance during the determined part of the particular time period, and (4) combining the performance data gathered for each communication point identified as belonging to the at least one group of network devices to produce performance data for the at least one group of network devices during the particular time period; and

generating a report of the performance data compiled for the at least one group of network devices during the particular time period.

2. The method of claim 1 wherein performance data includes statistics related to communications within a network.

3. The method of claim 1 wherein performance data includes error status of devices in a network.

4. The method of claim 1 wherein a communication point is the lowest level of connectivity between devices in a network.

5. The method of claim 1 wherein a communication point is a port of a router.

6. The method of claim 1 wherein the report of the performance data compiled for the at least one group of network devices during the particular time period reflects activities of an individual network device during only the part of the particular time period for which the individual network device was associated with a tag that identifies the at least one group of network devices.

7. The method of claim 1 wherein compiling performance data for at least one group of network devices over a particular time period further comprises periodically determining which tag is associated with a particular communication point and storing, for the particular communication point, timing data that logs tags and corresponding times at which the particular communication point was associated with the tags.

8. The method of claim 1 wherein compiling performance data for at least one group of network devices over a particular time period further comprises detecting a change in communication point status from a first tag to a second tag that is different than the first tag and, in response to detecting the change in communication point status, storing timing data that logs a time associated with the change in communication point status from the first tag to the second tag.

9. The method of claim 1 wherein compiling performance data for at least one group of network devices over a particular time period further comprises compiling performance data associated with each of the identified communication points for only the determined part of the particular time period without regard for performance data associated with each of the identified communication points during a time period other than the determined part of the particular time period.

10. The method of claim 1 wherein compiling performance data for at least one group of network devices over a particular time period further comprises omitting performance data during the particular time period when the determined part of the particular time period is less than all of the particular time period.

11. The method of claim 1 wherein compiling performance data for at least one group of network devices over a particular time period further comprises compiling network traffic metrics associated with each of the identified communication points for the determined part of the particular time period.

12. The method of claim 1 wherein:

at least one of the identified communication points is associated with multiple tags concurrently, and

compiling performance data for at least one group of network devices over a particular time period further comprises:

for the at least one identified communication point that is associated with multiple tags concurrently, identifying a multiplier indicating a portion of the performance data for the at least one identified communication point corresponding to the particular group of network devices;

determining an apportioned amount of the performance data for the at least one identified communication point based on the multiplier, the apportioned amount of the performance data being less than all of the performance data; and

compiling the apportioned amount of the performance data for the at least one identified interface.

13. A computer storage device readable by a computer system, the computer storage device storing executable instructions that cause the computer system to perform operations comprising:

associating tags with communication points of network devices conditioned on whether the network device belongs to a group of network devices, each tag indicating at least one group of network devices to which the network device associated with the communication point belongs;

compiling performance data for at least one group of network devices over a particular time period by (1) identifying communication points that, during the particular time period, had a tag that identifies the at least one group of network devices, (2) determining, for each of the identified communication points, a part of the particular time period during which the identified communication point was associated with a tag that identifies the at least one group of network devices, (3) gathering, for each communication point identified as belonging to the at least one group of network devices, performance data based on performance during the determined part of the particular time period, and (4) combining the performance data gathered for each communication point identified as belonging to the at least one group of network devices to produce performance data for the at least one group of network devices during the particular time period; and

generating a report of the performance data compiled for the at least one group of network devices during the particular time period.

14. The computer storage device of claim 13 wherein compiling performance data for at least one group of network devices over a particular time period further comprises periodically determining which tag is associated with a particular communication point and storing, for the particular communication point, timing data that logs tags and corresponding times at which the particular communication point was associated with the tags.

15. The computer storage device of claim 13 wherein compiling performance data for at least one group of network devices over a particular time period further comprises detecting a change in communication point status from a first tag to a second tag that is different than the first tag and, in response to detecting the change in communication point status, storing timing data that logs a time associated with the change in communication point status from the first tag to the second tag.

16. The computer storage device of claim 13 wherein compiling performance data for at least one group of network devices over a particular time period further comprises compiling performance data associated with each of the identified communication points for only the determined part of the particular time period without regard for performance data associated with each of the identified communication points during a time period other than the determined part of the particular time period.

17. The computer storage device of claim 13 wherein compiling performance data for at least one group of network devices over a particular time period further comprises omitting performance data during the particular time period when the determined part of the particular time period is less than all of the particular time period.

18. The computer storage device of claim 13 wherein compiling performance data for at least one group of network devices over a particular time period further comprises compiling network traffic metrics associated with each of the identified communication points for the determined part of the particular time period.

19. The computer storage device of claim 13 wherein:

at least one of the identified communication points is associated with multiple tags concurrently, and

compiling performance data for at least one group of network devices over a particular time period further comprises:

for the at least one identified communication point that is associated with multiple tags concurrently, identifying a multiplier indicating a portion of the performance data for the at least one identified communication point corresponding to the particular group of network devices;

determining an apportioned amount of the performance data for the at least one identified communication point based on the multiplier, the apportioned amount of the performance data being less than all of the performance data; and

compiling the apportioned amount of the performance data for the at least one identified interface.

20. A system including at least one processor configured to perform operation comprising:

associating tags with communication points of network devices conditioned on whether the network device belongs to a group of network devices, each tag indicating at least one group of network devices to which the network device associated with the communication point belongs;

compiling performance data for at least one group of network devices over a particular time period by (1) identifying communication points that, during the particular time period, had a tag that identifies the at least one group of network devices, (2) determining, for each of the identified communication points, a part of the particular time period during which the identified communication point was associated with a tag that identifies the at least one group of network devices, (3) gathering, for each communication point identified as belonging to the at least one group of network devices, performance data based on performance during the determined peon part of the particular time period, and (4) combining the performance data gathered for each communication point identified as belonging to the at least one group of network devices to produce performance data for the at least one group of network devices during the particular time period; and

generating a report of the performance data compiled for the at least one group of network devices during the particular time period.