D-Link DGS-3700 User Manual download pdf (Page 98)

DGS-3700-12/DGS-3700-12G Series Layer 2 Gigabit Ethernet Switch User Manual

Port Trunking

Understanding Port Trunk Groups

Port trunk groups are used to combine a number of ports together to make a single high-bandwidth data pipeline.

DGS-3700 Series supports up to 6 port trunk groups with 2 to 8 ports in each group. A potential bit rate of 8000 Mbps

can be achieved.

Figure 3 - 23 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.

NOTE: If any ports within the trunk group become disconnected, packets intended for the

disconnected ports will be load shared among the other unlinked ports of the link aggregation

group.

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 6 link aggregation groups, each group consisting of 2 to 8 links (ports). The

aggregated links must be contiguous (they must have sequential port numbers) except the four (optional) Gigabit

ports, which can only belong to a single link aggregation group. All of the ports in the group must be members of the

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D-Link DGS-3700 User Manual Page 98