Madge Networks Token Ring Switch - Manual (Page 44)

44
Smart DeskStream Technical Presentation 44
n Resilient links
Backbone
Source Route Switching
Introducing multiple uplinks - 1
A
X
Ring Number 101
Dual uplinks to the same backbone switch
This is an illegal configuration - two ports on the
same switch cannot connect to the same ring
Note: SRT+ will not overcome this - SRT+
learns configuration from ring poll process,
which DeskStream only performs on each port
Spanning tree will close one of the ports
Duplicate links to the same Ringswitch will usually result in a bridging
error - bridging a ring to itself makes no sense - and spanning tree
will close one of the ports