Allied-telesis AT-S25 Manuel d'utilisateur télécharger pdf (Page 47)

AT-S25 Version 1.4 User’s Guide

The Spanning Tree Parameters window in Figure 13 is displayed.

Figure 13 Spanning Tree Parameters Window

4. Adjust the settings as desired.

The parameters are discussed below.

Bridge Priority

Bridges use this number to determine the root bridge for a loop-

free implementation. If bridges happen to have equal priority

values, the bridge with the numerically lowest MAC address

becomes the root bridge. When the root bridge malfunctions, the

bridge with the next priority number (or the next lowest MAC

address) automatically takes over as root bridge. This parameter

can be from 0 (zero) to 65,535, with 0 being the highest priority.

Max Age Time

All bridges in a bridged LAN use this aging time to test the age of

stored configuration messages called bridge protocol data units

(BPDUs). This parameter can be from 6 to 40 seconds. The default

is 20 seconds. For example, if you use the default 20, all bridges

delete current configuration messages after 20 seconds.

Note

The aging time for BPDUs is different from the aging time used by

the MAC address table.

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Allied-telesis AT-S25 Manuel d'utilisateur Page 47