Cabletron Systems 2.2 Manual De Usuario
Connection Policy Window
3-5
FDDI Applications
Concentrator Non-M Ports
This Þeld display the number of non-Master ports (A, B, or S ports) on the
modular FDDI BRIM concentrator.
modular FDDI BRIM concentrator.
Number of MACs
The number of Media Access Control entities present in the FDDI BRIM,
indicating the number of ring port pairs. For the FDDI BRIM, this number
will be 1.
indicating the number of ring port pairs. For the FDDI BRIM, this number
will be 1.
MAC Path
This Þeld displays the conÞguration of the MAC with 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 conÞguration of the
various entities within a node. CMT provides the link conÞdence test and
speciÞes 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:
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 conÞguration of the
various entities within a node. CMT provides the link conÞdence test and
speciÞes 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 1Ñ
the Primary 1 FDDI ring is being used.
¥
Secondary 1Ñ
the Secondary 1 FDDI ring is being used.
¥
Primary 2Ñ
the Primary 2 FDDI ring is being used.
¥
Secondary 2Ñ
the Secondary 2 FDDI ring is being used.
¥
Local
Ñthe MAC is not inserted into a primary or secondary path of a dual
ring, but may be connected to one or more other nodes.
¥
IsolatedÑ
the MAC has no connection to the ring or other concentrator ports.
¥
Unknown
or ?ÑSPECTRUM Element Manager cannot determine the MAC
path for the FDDI BRIM.
Ring Configuration
The current conÞguration of the MAC and physical layers of the A and B ports.
Connection Policy Window
The SMT Connection Policy determines which types of connections are allowed
among the four FDDI port types: A, B, M (Master), and S (Slave). FDDI protocol
forbids MasterÐ>Master connections; all other connection types are legal,
although some are considered to be undesirable.
among the four FDDI port types: A, B, M (Master), and S (Slave). FDDI protocol
forbids MasterÐ>Master connections; all other connection types are legal,
although some are considered to be undesirable.