Discovery | Why do Cisco Stacked Switches have a generic Model ID like Catalyst 29xxStack, cat36xxstack, etc?Issue Issue: Discovery of a Stackable Switch sets the Model ID to a generic Model such as Catalyst 29xxStack while the actual physical Model is Catalyst 2960x48fpsL This occurs because the Network Switch being Discovered is replying to the SNMP OID request for the devices sysObjectID with the Stack OID that matches that generic model rather than its own sysObjectID. Discovery uses the returned sysObjectID OID to lookup that OID on the SNMP OID Classification [discovery_snmp_oid] table which has mappings to the CI Class, Manufacturer, and Model ID for that OID. Looking at a Cisco Catalyst 2960x48fpsL Stackable Switch as an example: If the Network Switch replies with the Stack OID sysObjectID 1.3.6.1.4.1.9.1.1208 then the Model ID will be set to Catalyst 29xxStack.If the Network Switch replies with its own sysObjectID 1.3.6.1.4.1.9.1.1695 then the Model ID will be set to Catalyst 2960x48fpsL. Which of the two sysObjectID's that is returned is a configuration on the Network Switch. Running show snmp sysobjectid type or show snmp sysobjectid for older ios versions on the Switch will show whether the the Stack OID is being used. Switch1#show snmp sysobjectid type Configured value : use stack OID Operational value : use stack OID ReleaseAll ReleasesCauseThe Root Cause is a configuration on the Network Switch being Discovered. Stackable Switches are configured to return the Stack OID by default whether that Switch is in Stack or not. ResolutionPer the below article from the Cisco Community the no snmp-server sysobjectid type stack-oid command can be used to change the default configuration and have the Switch return its own sysObjectID. https://community.cisco.com/t5/network-management/snmp-oid-different-that-expected/td-p/1009069 Switch1(config)#no snmp-server sysobjectid type stack-oid Switch1#show snmp sysobjectid type Configured value : do not use stack OID Operational value : do not use stack OID Please reach out to Cisco Support for any additional questions or issues with this Network Switch configuration.