Figure 9. Example Of Dynamic Source Route Recovery, Normal State - Cabletron Systems SmartStack STS16-20R Installation And User Manual

Figure 9. Example of Dynamic Source Route Recovery, Normal State

If one of the switches (Figure 9) or its link to any of the Token-Rings fail, (one of)
the remaining active switch(es) will after a short interval activate its backup path to
take over the traffic of the failed switch (see Figure 10) When the failing switch has
been repaired/replaced, the traffic will automatically revert to it.
Switch Overview
BRF
Bridge No. B1
Backup BRF
Inactive
A
M
BRF
Bridge No. B2
Backup BRF
Inactive
A
M
SmartStack STS16-20D/STS16-20R Token Ring Switches Installation and User Guide
A
T
T
M
A
T
T
M
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