Port Trunking - D-Link DES-6300 User Manual

Modular L3 Ethernet Switch User's Guide
Figure 5- 2. After Applying the STA Rules
STA parameters Settings
Bridge Priority lower the #,
higher the
priority
Hello Time 1 - 10 sec.
Max. Age Time 6 - 40 sec.
Forward Delay 4 - 30 sec.
Port Level STA parameters
Enable/Disable Enable/
Disable
lower the #,
Port Priority
higher the
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 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
Effects Comment
Increases chance of Avoid, if the switch is
becoming the Root used in workgroup level
Bridge of a large network
No effect, if not Never set greater than
Root Bridge Max. Age Time
Compete for Root Avoid low number for
Bridge, if BPDU is unnecessary reset of
not received Root Bridge
Max. Age ≤ 2 x
High # delays the
change in state
(Forward Delay - 1)
Max. Age ≥ 2 x (Hello
Time + 1)
Enable or disable Disable a port for
this LAN segment security or problem
isolation
Increases chance of
become Root Port
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