D-Link DGS-3208TG User Guide - Page 30

Port Trunking, Table 5-1., User-selective STA parameters, Port trunking example

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Gigabit Ethernet Switch User's Guide 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 Root Bridge Never set greater than 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 change in state Max. Age ≤ 2 x (Forward Delay - 1) Max. Age ≥ 2 x (Hello Time + 1) Port-level STA parameters Enable/Disable Enable/ Disable Enable or disable this LAN segment Disable a port for 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. The Switch supports up to four trunk groups, the first three which may include from two to four switch ports each. The fourth trunk group is two ports. Figure 5-3. Port trunking example 18

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Gigabit Ethernet Switch User’s Guide
18
STA parameters
Settings
Effects
Comment
Bridge Priority
lower the #,
higher the
priority
Increases chance of
becoming the Root
Bridge
Avoid, if the switch is
used in workgroup level
of a large network
Hello Time
1 - 10 sec.
No effect, if not
Root Bridge
Never set greater than
Max. Age Time
Max. Age Time
6 - 40 sec.
Compete for Root
Bridge, if
BPDU is
not
received
Avoid low number for
unnecessary reset of
Root Bridge
Forward Delay
4 - 30 sec.
High # delays the
change in state
Max. Age
≤
2
x
(Forward Delay - 1)
Max. Age
≥
2 x
(Hello
Time + 1)
Port-level STA parameters
Enable/Disable
Enable/
Disable
Enable or disable
this LAN segment
Disable a port for
security or problem
isolation
Port Priority
lower the #,
higher the
priority
Increases chance of
become Root Port
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.
The Switch supports up to four trunk groups, the first three which may include from two to four switch ports
each. The fourth trunk group is two ports.
Figure 5-3.
Port trunking example