D-Link DES-6300 User Manual page 112

Modular L3 Ethernet Switch User's Guide
Figure 6- 77. Spanning Tree Parameters window Bridge Setup Parameter tab
The Bridge Setup Parameter tab displays the following fields:
♦ Bridge Priority – Indicates the bridge's priority within the Spanning Tree. The bridge with the
lowest value has the highest priority, and is the root.
♦ Bridge Max Age (Seconds) – Indicates the amount of time a bridge waits before implementing
a topological change. The possible values are 6-40 seconds. The default is 20 seconds. This
parameter is configured on all the bridges participating in the STP but only the one belonging to
the elected Root Bridge is used. It is strongly recommended to use:
♦ Bridge Hello Time (Seconds) – Indicates the amount of time a root bridge waits between
configuration messages. The possible values are 1-10 seconds. The default is 2 seconds.
Lengthening the Bridge Hello Time lowers the overhead time of the Spanning Tree Protocol (STP).
♦ Bridge Forward Delay (Seconds) – Indicates the amount of time a bridge remains in a
listening and learning state before forwarding packets. The possible values are 4-30 seconds.
Bridge Forward Delay is also used when a topology change is detected. Bridge Forward Delay
ensures that Bridges use a consistent value for the Forward Delay Timer when changing the
State of a Port to the forwarding state. The default is 15 seconds.
Spanning Tree Extended Port Table
The Spanning Tree Extended Port Table displays various types of damp and BPDU information.
To display the Spanning Tree Extended Port Table:
♦ Select Bridge > Spanning Tree > Spanning Tree Extended Port Table. The Spanning Tree
Extended Port Table opens:
Max age ≥ Hello time x 2 + 1.0s.
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