SNMP - No Such Object available on this agent at this OID

Supp!

I need this disk space alert it keeps failing..

Also, is there any OID to track the % used space, as in var percentage in use?

[root@bigip1:Active:Standalone] config # snmpwalk -v 2c -c public localhost .1.3.6.1.4.1.3375.2.4.0.25

F5-BIGIP-COMMON-MIB::bigipDiskPartitionWarn = No Such Object available on this agent at this OID
[root@bigip1:Active:Standalone] config #

This is insanity, why won't this work, looks like all oids are just wrong..