SmartBridges sB3412 manual STP Settings Configuration

i n t e l l i g e n t w i r e l e s s p l a t f o r m

2.7.5. STP Settings Configuration

STP is disabled by default. The table below lists the default STP settings when the STP is enabled.

	Table 2-3 Default STP Values
Setting	Default Value	Range	Purpose
Bridge priority	32768	0-65535	A parameter used to identify the
			root bridge in a spanning tree
			(instance of STP). The bridge
			with the lowest value has the
			highest priority and is the root.
Bridge max age	20	6-40	The interval a bridge will wait for
			a hello packet from the root
			bridge before initiating a topology
			change.
Bridge hello time	2	1-10	The interval of time between
			each configuration BPDU sent by
			the root bridge.
Bridge forward delay	15	4-30	The period of time a bridge will
			wait (the listen and learn period)
			before beginning to forward data
			packets.
Ethernet port (ETH A)	100	0-65535	The cost of using the port to
path cost			reach the root bridge. When
			selecting among multiple links to
			the root bridge, STP chooses the
			link with the lowest path cost and
			blocks the other paths. Each port
			type has its own default STP path
			cost.
Ethernet port (ETH A)	128	0-255	The preference that STP gives to
priority			this port relative to the other ports
			for forwarding traffic out of the
			spanning tree.
			A higher numerical value means
			a lower priority; thus, the highest
			priority is 8.
Ethernet port (ETH B)	100	0-65535	The cost of using the port to
path cost			reach the root bridge. When
			selecting among multiple links to
			the root bridge, STP chooses the
			link with the lowest path cost and
			blocks the other paths. Each port
			type has its own default STP path
			cost.

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