3Com corebuilder 3500 Implementation Manual page 103

Table 11 Bit to Set for Rejecting a Station Connection
This Connection Is
Rejected
(System port - Remote
port)
A-A
A-B
A-S
A-M
B-A
B-B
B-S
B-M
S-A
S-B
S-S
S-M
M-A
M-B
M-S
M-M
If This Bit
Is Set Connection Rules
0 Undesirable peer connection that creates
twisted primary and secondary rings; notify
station management (SMT).
1 Normal trunk ring peer connection.
2 Undesirable peer connection that creates
a wrapped ring; notify SMT.
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.
4 Normal trunk ring peer connection.
5 Undesirable peer connection that creates
twisted primary and secondary rings; notify
SMT.
6 Undesirable peer connection that creates a
wrapped ring; notify SMT.
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.
8 Undesirable peer connection that creates a
wrapped ring; notify SMT.
9 Undesirable peer connection that creates a
wrapped ring; notify SMT.
10 Connection that creates a single ring of two
slave stations.
11 Normal tree connection.
12 Tree connection with possible redundancy.
13 Tree connection with possible redundancy.
14 Normal tree connection.
15 Illegal connection that creates a tree of rings
topology.
FDDI Stations 103