xStack® DES-3528/DES-3552 Series Layer 2 Managed Stackable Fast Ethernet Switch Web UI Reference Guide
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Load balancing is automatically applied to the ports in the aggregated group, and a link failure within the group
causes the network traffic to be directed to the remaining links in the group.
The Spanning Tree Protocol will treat a link aggregation group as a single link, on the switch level. On the port level,
the STP will use the port parameters of the Master Port in the calculation of port cost and in determining the state
of the link aggregation group. If two redundant link aggregation groups are configured on the Switch, STP will block
one entire group; in the same way STP will block a single port that has a redundant link.
NOTE: If any ports within the trunk group become disconnected, packets intended for the
disconnected port will be load shared among the other linked ports of the link aggregation
Port Trunking Settings
On this page the user can configure the port trunk settings for the Switch.
To view the following window, click L2 Features > Link Aggregation > Port Trunking Settings, as shown below:
Figure 4-34 Port Trunking Settings window
The fields that can be configured are described below:
Parameter Description
Algorithm
This is the traffic hash algorithm among the ports of the link aggregation group. Options to
choose from are MAC Source, MAC Destination, MAC Source Destination, IP Source, IP
Destination and IP Source Destination.
Unit
Select the unit to configure.
Group ID (1-8) Select an ID number for the group, between 1 and 8.
Type This pull-down menu allows users to select between Static and LACP (Link Aggregation
Control Protocol). LACP allows for the automatic detection of links in a Port Trunking Group.
Master Port
Choose the Master Port for the trunk group using the drop-down menu.
State Use the drop-down menu to toggle between Enabled and Disabled. This is used to turn a port
trunking group on or off. This is useful for diagnostics, to quickly isolate a bandwidth intensive
network device or to have an absolute backup aggregation group that is not under automatic
control.
Click the Apply button to accept the changes made.
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