Port Trunking; Understanding Port Trunk Groups - D-Link DAS-3626 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. The
DAS-3626 supports single trunk group for the two Gigabit Ethernet (ports Ports 25 and 26). A potential bit rate of 2000
Mbps can be achieved.
The switch treats both ports in the 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 either port within the trunk group becomes disconnected, packets intended for the
disconnected port are load shared among the other unlinked ports of the link aggregation
group.
Link aggregation is supported for the Gigabit Ethernet ports only. Both 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.
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.
To view this window, click Switch Configuraiton > Port Trunking as shown below:
To create a port trunk with Gigabit Ethernet ports 25 and 26, click to checkmark the boxes 25 and 26, configure the
menu options and click the Apply button.
DAS-3626 VDSL2 Switch User Manual
Figure 35. Port Trunking menu
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