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24-port NWay Ethernet Switch User’s Guide
20 Switch Management Concepts
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, with one port designated as the master 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 master
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 master port.
The DES-3225G 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 master port for the first
group is preset as port 7, the master port for the second group is port 15 and the master port for the third group is the first
port (1x) on the 2-port module.