D-Link xStack DES-3800 Series, Руководство пользователя

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xStack DES-3800 Series Layer 3 Stackable Fast Ethernet Managed Switch
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. DES-3800 Series
supports up to 32 port trunk groups with 2 to 8 ports in each group. A potential bit rate of 8000 Mbps can be achieved.
Figure 7- 10. 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 port 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 32 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 same VLAN, and their STP status, static
multicast, traffic control; traffic segmentation and 802.1p default priority configurations must be identical. Port locking, port
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