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Administering FDDI Stations 8-3
Setting the
Connection Policies
The connectPolicy attribute is a bit string representing the connection
policies in effect on a station. A connection’s type is defined by the types of
the two ports involved (A, B, M, or S) in the connection. You can set the
corresponding bit for each of the connection types that you want a
particular station to reject.
The Switch 2200 FDDI ports can be of type A or B. By default, all
connections to the Switch 2200 FDDI ports are valid, except for M-M
connections. The possible connections to reject and their corresponding
bits are listed in Table 8-2.
tNotify Timer used in the Neighbor Notification protocol to indicate the
interval of time between the generation of Neighbor Information
Frames (NIF). This value can be user-defined.
traceMaxExp Maximum propagation time for a Trace on an FDDI topology.
Places a lower bound on the detection time for an unrecovering
ring.
Table 8-1 Description of Fields for FDDI Station Attributes (continued)
Field Description
Table 8-2 Bit to Set for Rejecting a Station Connection
This Connection Is
Rejected...
(Switch 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
(continued)