D-Link DES-6300, User Manual, Page: 36 / 298

Modular L3 Ethernet Switch User’s Guide
27
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, 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 up to 16 trunk groups. Each module on the switch supports up to two trunk
groups except gigabit modules, which support a single trunk group. The Switch treats all ports in
a trunk group as a single port. As such, trunk ports will not be blocked by Spanning Tree.
Data transmitted to a specific host (destination address) will always be transmitted over the same
port in a trunk group. This allows packets in a data stream to arrive in the same order they were
sent. A trunk connection can be made with any other switch that maintains host-to-host data
streams over a single trunk port. Switches that use a load-balancing scheme that sends the
packets of a host-to-host data stream over multiple trunk ports cannot have a trunk connection
with the Switch.
VLAN Structure
VLANs can be defined based on port and IP or IPX protocols and subnets, or various protocols
such as DECnet, NetBios, and AppleTalk. The device can simultaneously support several
VLANs for each protocol.