3Com 3500 - Manual (Page 226)

226 C HAPTER 8: F IBER D ISTRIBUTED D ATA I NTERFACE (FDDI)
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.
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 Connection that allows one system port to be
connected to another system port.
This
Connection
Is Rejected
If This Bit Is Set Connection Rules