D-Link DES-3624 manual Port Trunking, STA parameters Settings Effects Comment Bridge Priority

Stackable NWay Ethernet Switch User’s Guide

Figure 5-2. After Applying the STA Rules

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

Table 5-1. User-selective STA parameters

Port Trunking

Port trunking is used to combine a number of ports together to make a single high-bandwidth data pipeline. The participating parts are called members of a trunk group, with one port designated as the anchor of the group. Since all members of the trunk group must be configured to operate in the same manner, all settings changes made to the anchor port are applied to all members of the trunk group. Thus, when configuring the ports in a trunk group, you only need to configure the anchor port.

The Switch supports 3 trunk groups, which may include from 2 to 8 switch ports each, except for the third trunk group which consists of the 2 ports of the Slot 1, 100BASE-TX or 100BASE-FX front-panel module. The anchor port for the first group is preset as port 5, the anchor port for the second group is port 13 and the anchor port for the third group is the first port (1x) on the 2-port module.

34 Switch Management Concepts