Cabletron Systems SmartSTACK STS16-20RM Installation And User Manual page 112

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Bridge Maximum Message Age (in Seconds)
Enter the maximum message age advertised when this BRF is root. The minimum
value may not be less than the higher of 6 or (2 x (Switch Hello Time + 1)). The
maximum may not be more than the lower of 40 or (2 x (Switch Forward Delay –
1)). The range limits that appear reflect the values currently selected for Switch
Hello Time and Switch Forward Delay.
Default: 20
Bridge Forward Delay (in Seconds)
Enter the time the BRF spanning tree entity waits between transitions from
listening to learning, and from learning to forwarding. The minimum may not be
less than the larger of 4 or ((Switch Maximum Message Age / 2) +1). The
maximum may not be higher than 30. The lower range limit that appears reflects
the value currently selected for Switch Maximum Age.
Default: 15
CRF & Port Spanning Tree Parameters...
If you select the CRF & Port Spanning Tree Parameters item, you will be
presented with a screen listing the CRFs that have the current BRF as parent. From
this screen, you can select a CRF and modify the CRF and/or port parameters as
desired.
SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Switch Configuration