SMC Networks 1000BASE-X manual Slower media

USING THE SYSTEM CONFIGURATION PROGRAM

Parameter	Default	Description
(Path) Cost	100/19/4	This parameter is used by the STA algorithm to
		determine the best path between devices. Therefore,
		lower values should be assigned to ports attached to
		faster media, and higher values assigned to ports with
		slower media.
		(Path cost takes precedence over port priority.)
		The default and recommended range is:
		Ethernet: 100 (50~600)
		Fast Ethernet: 19 (10~60)
		Gigabit Ethernet: 4 (3~10)
		The full range is 1 - 65535.
Fast	Enabled	This parameter is used to enable/disabled the Fast
Forwarding		Spanning Tree mode for the selected port. In this
		mode, ports skip the Blocked, Listening and Learning
		states and proceed straight to Forwarding.

Note: Fast Forwarding enables end-node workstations and servers to overcome time-out problems when the Spanning Tree Algorithm is implemented in a network. Therefore, Fast Forwarding should only be enabled for ports connected to an end-node device.

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