D-Link DXS-1100-10TS User Manual - Page 72

Load balancing is automatically applied to the ports in the aggregated group

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4 Configuration D-Link 10 Gigabit Ethernet Switch User Manual Figure 4.91 - 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 DXS-1100-10TS allows the creation of up to 5 link aggregation groups, each group consisting of 1 to 4 links (ports); and the DXS-1100-16TC allows the creation of up to 8 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 locking must not be enabled on the trunk group. Further, the LACP aggregated links must all be of the same speed and should be configured as full duplex. 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. 65

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4 Configuration
D-Link 10 Gigabit Ethernet Switch User Manual
65
Figure 4.91 – 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 DXS-1100-10TS allows the creation of up to 5 link aggregation groups, each group consisting of 1 to 4
links (ports); and the DXS-1100-16TC allows the creation of up to 8 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 locking
must not be enabled on the trunk group. Further, the LACP aggregated links must all be of the same speed
and should be configured as full duplex.
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.