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| Sun Ethernet Fabric Operating System ### STP Administration Guide

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#### Spanning Tree Timers Overview

You can specify these spanning tree timers for a given interface:

- `forward-time` controls how fast a port changes its spanning tree state from blocking state to forwarding state. The range is 4-30 seconds. The default value is 15 seconds.

- `hello-time` determines how often the switch broadcasts its hello message to other switches when it is the root of the spanning tree.

- `Max-age` is the maximum time allowed for the STP information learned from the network on any port to be retained before it is discarded.

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