D-Link DES-5016 manual Root Bridge, Root Port, User Selective STA Parameters

Fast Ethernet Switching System User’s Guide

The switch with the lowest Bridge Identifier is the Root Bridge. It is best to make the Root Bridge the best switch on the network to ensure the best network performance and reliability.

Root Bridge

Specifies the MAC address of the Root Bridge. The DES-5016 may or may not be the root bridge. The DES-5016 is the default root bridge.

Root Port

Specifies the preferred path to the Root Bridge. Only one path per bridge can exist. The default setting is none.

Table 8: User Selective STA Parameters

STA parameters	Settings	Effects	Comment
Enable/Disable	Enable/	Participate in or	Enable in a
	Disable	remove from	SNMP network.
		STA
Bridge Priority	Lower the	Increases	Avoid, if the
	#, higher	chance of	switch is used in
	the	becoming the	workgroup level of
	priority	Root Bridge	a large network
Hello Time	1 – 10	No effect, if not	Never set greater
	seconds	Root Bridge	than Max Age
			Time
Max Age Time	6 – 40	Compete for	Avoid low number
	seconds	Root Bridge, if	for unnecessary
		BPDU is not	reset of Root
		received	Bridge
Forward Delay	4 – 30	High # delays	Max Age < 2 x
	seconds	the change in	(Forward Delay -
		state	1)
			Max Age > 2 x
			Hello Time + 1)
Port Level STA parameters
Enable/ Disable	Enable/	Enable or	Disable a port for
	disable	disable LAN	security or
		segment	problem isolation
Port Priority	Lower the	Increases
	#, higher	chance of
	the	becoming the
	priority	Root Port

Managing the DES-5016 63