If the device is using SNMP v2 by default , Device Interface ifname,ifdescription,ifalias and interface bandwidth speed will not get updated because Netflow analyzer to set to use SNMP v1 by default.
To make SNMP v2 as default:
1)Edit the file "system_properties.conf" located under OpManager\conf using Wordpad and add the following entry at the bottom of the file
2)Save the file and restart Netflow Analyzer service
3)Go to the device snapshot page > Edit the device , set SNMP , select the SNMP credential>Test SNMP and click on OK to save the SNMP credential.
4)Click on Edit Device Details > Select Fetch SNMP from the router> Save.