Madge Networks Token Ring Switch - Manual (Page 45)

45
Smart DeskStream Technical Presentation 45
n Load sharing connectivity
Backbone
Source Route Switching
Introducing multiple uplinks - 2
B
A
Dual uplinks to different backbone switches
Both uplinks will be active, allowing load sharing
of source route traffic
AREs and specifically routed frames will pass
through
(Transparent traffic will still be blocked on one
port)
Ring Number 101
A
Active
Active
Dual connection to two Ringswitches, each with its own bridge
number, and both ports having the same ring number assigned, is a
valid and normal resilient operation.
On a Source Routed network one of the Ringswitch ports will be
designated, the other standby. Standby ports will not pass Spanning
Tree Explorer frames (sometimes called Single Route Explorers), but
will pass All Routes Explorers and Specifically Routed frames.
In a Transparently bridged network one port will be forwarding, the
other blocking. Blocking ports allow no frames to pass.