Station Management8-9
Station Each FDDI station has one Station Management (SMT) entity to provide
Managementconnection management, ring management, and operational management
to the FDDI network. SMT speciŢes a set of services and signaling
mechanisms dedicated to FDDI network management. It manages those
services of each station on the FDDI network that are speciŢc to the Physical
Layer and the MAC portion of the Data Link Layer.
The goal of SMT is to completely deŢne shared medium-management
services to guarantee the interoperability of FDDI network equipment from
multiple vendors.
SMT Operation The operation of SMT can be divided into three broad categories: Physical
Connection Management, ConŢguration Management, and Ring
Management.
nPhysical Connection Management (PCM) N PCM establishes and
maintains point-to-point physical links between neighboring ports. It
provides all the signaling necessary to initialize connections, withhold
marginal connections, and support maintenance.
nConŢguration Management (CFM) N CFM interconnects PHYs and MACs
on paths to achieve proper station conŢguration and network topology.
nRing Management (RMT) N RMT manages a MACOs operation in an FDDI
ring. RMT detects stations that are Ostuck� in the beacon process and initiates
the trace function. RMT locates duplicate addresses that may prevent the
ring from operating.
The FDDI MIB The FDDI Management Information Base (MIB) deŢnes the collection of
information available to network management about an FDDI station. The
MIB uses an object-oriented approach similar to that used in OSI
management standards. FDDI-managed objects include SMT (that is, the
SMT of the station), MACs, paths, and ports. Each of these objects has a
collection of attributes such as statistics, error counters, conŢguration
information, event notiŢcations, and actions. |
ACEC
