Specifications
B.7 FDDI Connection Rules
FDDI Overview B–15
B.7.6 Summary of FDDI Connection Rules
Table B–1 summarizes the FDDI connection rules.
Table B–1 FDDI Connection Rules and Station States
1
Indicates dual ring connection.
2
Tree topology always takes precedence over ring topology when simultaneous or conflicting connections
are made.
Port A Port B Topology Station State
M — Tree c_wrap_A
— M Tree c_wrap_B
M M Tree c_wrap_B (Dual Homed)
B—
Peer
1
c_wrap_A
—A
Peer
1
c_wrap_B
BA
Peer
1
Through
A
Peer
1
c_wrap_A
—B
Peer
1
c_wrap_B
S
Peer
1
c_wrap_A
—S
Peer
1
c_wrap_B
SS
Peer
1
Through
SMTree
c_wrap_B (Tree Preference)
2
MS Tree
c_wrap_A (Tree Preference)
2
SA
Peer
1
Through
BS
Peer
1
Through
BMTree
c_wrap_B (Tree Preference)
2
MA Tree
c_wrap_A (Tree Preference)
2