in document draft-ietf-ipcdn-subscriber-mib-12.txt you will find (in the MODULE-COMPLIANCE):
OBJECT diffServDataPathStorage SYNTAX StorageType { nonVolatile(3) } DESCRIPTION "An implementation is only required to support nonvolatile storage."
Do we believe this makes sense and is wise? I have my doubts. There is nothing illegal here, but it feels strange to me, no?
The entries gets added at the moment a cable modem subscribes. When the box reboots all cable modems have to resubscribe. Therefore, the entries must be volatile otherise, a cable modem can have a duplicate set of entries for them.