Hi Joey,
The task "tipFdbAgeT' refers to IP FDB Aging Timer on Extremeware switches. You can clear the FDB table on Summit-200 to see if the CPU spike clears out which is probably due to software/hardware mismatch.
For these End of Life products, there are not many troubleshooting tools available. So if clearing table does not help, rebooting the switch will be next step which can re-initialize all the processes and might help.
Thanks,
Ijaz