User manual

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36
Trunking
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 six port trunk groups with 2 to 8 ports in each group. A potential bit rate of 800 Mbps can
be achieved.
Figure 7- 7. 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
uplinked 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 six link aggregation groups, each group consisting of 2 to 8 links (ports). 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 mirroring and
802.1X must not be enabled on the trunk group. Further, the aggregated links must all be of the same speed and
should be configured as full-duplex.
The Master Port of the group is to be configured by the user, and all configuration options, including the VLAN
configuration that can be applied to the Master Port, are applied to the entire link aggregation group.