D-Link DGS-1100-24P Reference Guide - Page 59

D-Link DGS-1100 Series Switch User Manual 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. NOTE: If any ports within the trunk group become disconnected, packets intended for the disconnected port will be load shared among the other linked ports of the link aggregation group. This window is used to view and configure the link aggregation settings. To view the following window, click L2 Features > Link Aggregation, as shown below: Figure 7-256 Link Aggregation window The fields that can be configured for Channel Group Information are described below: Parameter From Port / To Port Group ID Mode Description Select the appropriate port range used for the configuration here. Enter the channel group number here. The system will automatically create the port-channel when a physical port first joins a channel group. An interface can only join one channel-group. Select the mode option here. Options to choose from are On, Active, and Passive. If the mode On is specified, the channel group type is static. If the mode Active or Passive is specified, the channel group type is LACP. A channel group can only consist of either static members or LACP members. Once the type of channel group has been determined, other types of interfaces cannot join the channel group. Active - Active LACP ports are capable of processing and sending LACP control frames. This allows LACP compliant devices to negotiate the aggregated link so the group may be changed dynamically as needs require. In order to utilize the ability to change an aggregated port group, that is, to add or subtract ports from the group, at least one of the participating devices must designate LACP ports as active. Both devices must support LACP. Passive - LACP ports that are designated as passive cannot initially send LACP control frames. In order to allow the linked port group to negotiate adjustments and make changes dynamically, one end of the connection must have "active" LACP ports Click the Add button to add a new entry based on the information entered. Click the Delete Member Port button to remove the specific member port. Click the Delete Channel button to remove the specific entry. Click the Channel Detail button to view more detailed information about the channel. 53