D-Link DES-1228 User Manual download pdf (Page 51)

After Enabling STP, setting the STP Global Setting includes the

following options:

Bridge Priority: This value between 0 and 65535 specifies the

priority for forwarding packets: the lower the value, the higher the

priority. The default is 32768.

Bridge Max Age: This value may be set to ensure that old

information does not endlessly circulate through redundant paths in

the network, preventing the effective propagation of the new

information. Set by the Root Bridge, this value will aid in determining

that the Switch has spanning tree configuration values consistent with

other devices on the bridged LAN. If the value ages out and a BPDU

has still not been received from the Root Bridge, the Switch will start

sending its own BPDU to all other switches for permission to become

the Root Bridge. If it turns out that the Switch has the lowest Bridge

Identifier, it will become the Root Bridge. A time interval may be

chosen between 6 and 40 seconds. The default value is 20.

Bridge Hello Time: The user may set the time interval between

transmissions of configuration messages by the root device, thus

stating that the Switch is still functioning. The default is 2 seconds.

(Max Age has to have a value bigger than Hello Time)

Bridge Forward Delay: This sets the maximum amount of time that

the root device will wait before changing states. The default is 15

seconds.

Root Bridge: Displays the MAC address of the Root Bridge.

Root port: Displays the root port.

Root Path Cost: Shows the root path cost.

Path Cost: This defines a metric that indicates the relative cost of

forwarding packets to specified port list. The lower the number, the

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D-Link DES-1228 User Manual Page 51