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In preparation of the Scheduled data network downtime Wed July 25, 2012, 1800-2200 this evening a test with the new central network component has been executed, upon which - as a side effect - the to-be-replaced central switch's active processing unit failed and a network interruption occurred.
The phenomenon is strange, the restart totally unrelated to the run test, but clearly shows, that the lifetime of the old machine is reached. The Cisco 6509 device served as central switch and router for the Campus network for more than 11 Years, with only two major faults, but in the recent 16 months with a clear performance lack.