D-Link DGS-3204 - Switch - EN 100VG-AnyLAN, Руководство пользователя

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Gigabit Ethernet Switch User’s Guide
24 Switch Management
there is more than one path, forwarded packets will
loop indefinitely. STA detects any looped path and
selects the path with the lowest path cost as the active
path, while blocking the other path and using it as the
backup path.
♦
Automatic topology re-configuration When the path
for which there is a backup path fails, the backup path
will be automatically activated, and STA
will
automatically re-configure the network topology.
STA Operation Levels
STA operates on two levels: the bridge level and the port
level. On the bridge level, STA calculates the Bridge
Identifier for each Switch, then sets the Root Bridge and
the Designated Bridges. On the port level, STA sets the Root
Port and Designated Ports. Details are as follows:
On the Bridge Level
♦
Root Bridge The switch with the lowest Bridge
Identifier is the Root Bridge. Naturally, you will want
the Root Bridge to be the best switch among the
switches in the loop to ensure the highest network
performance and reliability.
♦
Bridge Identifier This is the combination of the
Bridge Priority (a parameter that you can set) and the
MAC address of the switch. Example: 4 00 80 C8 00 01
00, where 4 is the Bridge Priority. A lower Bridge
Identifier results in a higher priority for the switch,
and thus increases it probably of being selected as the
Root Bridge.