3Com CoreBuilder 3500, Руководство по внедрению, Страница: 103 / 592

FDDI Stations 103
Table 11 Bit to Set for Rejecting a Station Connection
This Connection Is
Rejected
(System port - Remote
port) If This Bit
Is Set
Connection Rules
A-A 0 Undesirable peer connection that creates
twisted primary and secondary rings; notify
station management (SMT).
A-B 1 Normal trunk ring peer connection.
A-S 2 Undesirable peer connection that creates
a wrapped ring; notify SMT.
A-M 3 Tree connection with possible redundancy.
The node may not go to Thru state in
Configuration Management (CFM). In a
single MAC node, Port B has precedence
(with defaults) for connecting to a Port M.
B-A 4 Normal trunk ring peer connection.
B-B 5 Undesirable peer connection that creates
twisted primary and secondary rings; notify
SMT.
B-S 6 Undesirable peer connection that creates a
wrapped ring; notify SMT.
B-M 7 Tree connection with possible redundancy.
The node may not go to Thru state in CFM.
In a single MAC node, Port B has precedence
(with defaults) for connecting to a Port M.
S-A 8 Undesirable peer connection that creates a
wrapped ring; notify SMT.
S-B 9 Undesirable peer connection that creates a
wrapped ring; notify SMT.
S-S 10 Connection that creates a single ring of two
slave stations.
S-M 11 Normal tree connection.
M-A 12 Tree connection with possible redundancy.
M-B 13 Tree connection with possible redundancy.
M-S 14 Normal tree connection.
M-M 15 Illegal connection that creates a tree of rings
topology.