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Configuration 4-5
FDDI Management
Concentrator M Ports
This field displays the number of Master (M) ports on the device that are
associated with the selected SMT entity. A Master port is a port that provides a
connection for Single Attachment Station (SAS) devices to the FDDI network. The
9A128-01 does not support M ports, so this field will always display 0.
Concentrator Non-M Ports
This field display the number of non-Master ports (A, B, or S ports) on the device
that are associated with the selected SMT entity. The 9A128-01 supports only two
FDDI ports: the backplane A and B ports that supply each device’s connection to
the FDDI FNB backplane.
Number of MACs
The number of Media Access Control entities present on the device associated
with the selected SMT entity. For the 9A128-01, this number will be 1.
MAC Path
Indicates the configuration of the MAC in respect to the logical ring, as
determined by the Connection Management (CMT) portion of SMT. CMT controls
the establishment of a media attachment to the FDDI network, the connections
with other nodes in the ring, and the internal configuration of the various entities
within a node. CMT provides the link confidence test, and specifies a Link Error
Monitor (LEM) which monitors active links on a per-link basis to ensure that
failing links are detected and, if required, removed from the network. Possible
values are:
• Primary indicates that the MAC is inserted into the primary path of the
currently used FNB ring.
• Secondary indicates that the MAC is inserted into the secondary path of the
currently used FNB ring.
• Local means that the MAC is not inserted into a primary or secondary path of
a dual ring, but may be connected to one or more other nodes. This is not a
valid value for the 9A128-01.
• Isolated means that the MAC has no connection to the ring or other
concentrator ports.
• Not Available means that there is no MAC on the FDDI ring associated with
the selected SMT entity. Again, this state will not occur for the 9A128-01.
• Unknown means that device firmware cannot determine the MAC path.
• ? indicates that SPECTRUM Element Manager cannot determine the MAC
path.
Ring Configuration
The current configuration of the MAC and physical layers of the A and B ports.