Serial number for Cisco Nexus 9k Switches on certain Software Version is not discoveredIssue Serial number for Cisco Nexus 9k Switches on certain Software Version is not discoveredCauseIn Network Switch pattern, at step: Get entPhysicalTable if not already polled, we query 1.3.6.1.2.1.47.1.1.1.1(11) for serial number, and query 1.3.6.1.2.1.47.1.1.1.1(4) - entPhysicalContainedIn accordingly. In the next Pattern step, we filter out the results with condition entPhysicalContainedIn = 0. For Cisco N9k devices, the 1.3.6.1.2.1.47.1.1.1.1(4) - entPhysicalContainedIn for Fabric Stack Root should be 0. However in certain N9k software releases, it returns 1 instead, due to below Cisco bug: https://quickview.cloudapps.cisco.com/quickview/bug/CSCuy20251 Note: On above link, it has below known affected releases. However this is not the complete list, and more releases are affected. 7.0(3)I1(1) 7.0(3)I1(2) 7.0(7)ZD(0.192) In another network discussion thread, it's mentioned this is fixed in 7.0(3)I2(3). ResolutionPlease contact Cisco Support and upgrade the Software Version on the affected N9K Releases.