A useful utility to access the raw RFM network memory and do diagnostics is located on fb40m.
ssh fb40m
cd /usr/install/rfm2g_solaris/vmipci/sw-rfm2g-abc-005/util/diag/
rfm2g_util
When it asks for which device, enter the number 3.
At this point you can type help for a list of commands. You can also type "help command", where command is replaced with the name of the command you're interested in.
"help read" for example describes a function which reads a memory location on the RFM network.
There are also some diagnostic tools for testing if the RFM network rings is working properly.