|
Sorry for the late response.
Parameter Management Frames help define an optional management protocol
in the SMT draft standard. They can be used to manage SMT-specific
attributes on a station. DEC FDDI products do not implement PMFs.
DECelms uses the RBMS protocol to manage FDDI devices. These are
not PMF frames (nor are they any type of SMT frame). The first
round of MCC Access Modules for FDDI will also use the RBMS
protocol. SNMP management capability is currently in fieldtest
for the DECbridge 5xx, DECbridge 6xx, and DECconcentrator 500.
SNMP agents use the SNMP protocol to manage their devices.
SNMP proxy agents convert SNMP requests into the protocol that
the device being managed can understand. For example, some vendors
are discussing the PMF proxy that you brought up. In this case.
an SNMP proxy agent would intercept the SNMP get/set request,
translate it into the appropriate PMF frame and transmit it to
the managed device. PMF responses would be received by the proxy
agent, converted back into SNMP frames, and then sent back to the
requesting station.
A similar situation occurs with SMT Status Report Frames (SRF) and
SNMP traps. The FDDI device could issue SRF frames (indicating
some event has occurred). The proxy agent would receive the SRF
and translate it into the appropriate SNMP FDDI Trap message, and
then send it out to interested parties.
--------------
snmp | | PMF ---------------
<------->| snmp proxy |<------------>| FDDI Device |
| agent | ---------------
--------------
|