Ok after a lot of research and a back forth with Solarwinds support, the Nexus devices store the serial number in a different place in the mib than other Cisco devices. Solarwinds has not cracked the code yet, but I have. Here goes. The data is stored in MIB is 1.3.6.1.2.1.47.1.1.1.1.11 which is entPhysicalSerialNum. However, for a Nexus device the actuall chassis serial number shows up in two places under the table that shows all the device and card serial numbers, index 149 which is the chassis and index 10 which is the fabric or backplane. I have tested this on Cisco 7018 and Cisco 5548 devices in our network. At this time there is no real way that I have found to get at that information using the NCM. I shot this info back to Solarwinds in the hopes that development will use this information to update the NCM Reporting serial number resources to look this up when the device IOS is NOX.
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