You should be able to use rlcopy which is OID .1.3.6.1.4.1.89.87   Rlcopy source location .1.3.6.1.4.1.89.87.2.1.3 Rlcopy desination ip address .1.3.6.1.4.1.89.87.2.1.9   The firmware updates also contain the mib files so you can find OIDs [URL]
Hello,  I have Powerconnect 5548 and 7480  switches and I would like to know if it's possible to backup config files with TFTP and SNMP commands, as I do with my cisco switches ?  Thanks.
Powerconnect 5548, 7048 - SNMP configuration backup