DGS-1510 Series Gigabit Ethernet SmartPro Switch Web UI Reference Guide
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Link Aggregation
Understanding Port Trunk Groups
Port trunk groups are used to combine a number of ports together to make a single high-bandwidth data
pipeline. The Switch supports up to 32 port trunk groups with 1 to 8 ports in each group.
Figure 5-34 Example of Port Trunk Group
The Switch treats all ports in a trunk group as a single port. 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.
Link aggregation allows several ports to be grouped together and to act as a single link. This gives a
bandwidth that is a multiple of a single link's bandwidth.
Link aggregation is most commonly used to link a bandwidth intensive network device or devices, such as
a server, to the backbone of a network.
The Switch allows the creation of up to 32 link aggregation groups, each group consisting of 1 to 8 links
(ports). Each port can only belong to a single link aggregation group.
All of the ports in the group must be members of the same VLAN, and their STP status, static multicast,
traffic control; traffic segmentation and 802.1p default priority configurations must be identical. Port
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