for example, Extreme x450 snmp description is:
ExtremeWare XOS version 11.5.2.10 v1152b10 by release-manager on Thu Oct 26 09:53:04 PDT 2006
but Orion can not fetch version information to [IOS-version] as usual:
Alpine3808 - Version 7.5.3 (Build 8) by Release_Master 07/21/06 10:40:53 ===>7.5.3 (Build 8) by Release_Master 07/21/06 10:40:53
Maybe it is caused by first charactor case change in word [version]