Before trying to populate the value of the new attribute, verify that the SM_SerialNumber attribute has been added to the Router class in the data model of TEST_SERVER_RM.
To verify the presence of the new attribute:
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Open a Global Console. For this example, attach to TEST_SERVER_RM.
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Right-click within the Topology Browser Console topology tree and select Select .
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Select Show classes with no instances in current domain, and click OK.
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Select the Router class in the topology tree to display the attributes in the Attributes tab.
The SM_SerialNumber attribute appears, as shown in Serial number attribute added to the Router class in TEST_SERVER_RM.
Figure 1. Serial number attribute added to the Router class in TEST_SERVER_RM