Not sure if anyone else using StableNet to monitor their switches has found this so I will share. We use NMSaas cloud based StableNet and the OS does not come up correctly. So the way around it in the XML discovery you need to discover your device similar to this. The tag import and the oid regex filter fixes the OS version issue where Stablenet will discover it correctly. Love the tool and how configurable it is and how I can tweak everything as needed.
<device
ip="10.x.x.x"
name="Extreme440_Great_Sept_of_Baelor"
snmpversion="SNMPv2c"
snmpcommunity="<YourCommuintyString>"
coordinates="47.9548923,-122.381261"
fileencoding="UTF-8"
skipexisting="false"
icon="10124"
discover="true" >
<tagimport tagcategory="Device Operating System" snmpoid="1.3.6.1.2.1.1.1.0" pattern=".*version\s*(.*)\sby" tagmergetype="replace" />
<tagimport tagcategory="level 1" value="GreatSept" tagmergetype="replace"/>
<bandwidth namefilter="rtif,MgmtPort" automeasure="true" force64bit="true"/>
</device>
