3Com 2200 manual Description of Fields for Fddi Station Attributes TNotify, TraceMaxExp, Ring

Administering FDDI Stations 8-3

Table 8-1 Description of Fields for FDDI Station Attributes (continued)

Field	Description
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.

Setting the The connectPolicy attribute is a bit string representing the connection Connection Policies 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.

Table 8-2 Bit to Set for Rejecting a Station Connection

This Connection Is
Rejected...	If This Bit
(Switch port - Remote port)	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)