A trace is a diagnostic function that isolates a fault on the ring. For more information about RMT, see the next section. FDDI SMT Bay Networks routers support Version 7.2 of the SMT protocol. SMT can run only on a single FDDI ring and can manage only the FDDI components and functions within a node. It detects stuck beacon conditions and duplicate addresses, and determines when the MAC is available for transmitting frames.
Duplicate addresses prevent the proper operation of the ring.
SMT Frame Services SMT frame services manage and control the FDDI network and the nodes on the network. Different SMT frame classes and types implement these services. Frame class identifies the function that the frame performs. Frame type specifies whether the frame is an announcement, a request, or a response to a request. FDDI SMT frames are limited to a single FDDI ring.