Dell N3200-ON EMC Networking N-Series Switches User Guide version 6.6.3 - Page 1082

• Excellent load balancing performance. How Do LAGs Interact with Other Features? From a system perspective, a LAG is treated just as a physical port, with the same configuration parameters for administrative enable/disable, spanning tree port priority, path cost as may be for any other physical port. VLAN When members are added to a LAG, they are removed from all existing VLAN membership. When members are removed from a LAG they are added back to the VLANs that they were previously members of as per the configuration file. Note that a port's VLAN membership can still be configured when it's a member of a LAG. However this configuration is only actually applied when the port leaves the LAG. The LAG interface can be a member of a VLAN complying with IEEE 802.1Q. STP Spanning tree does not maintain state for members of a LAG, but does maintain state for the LAG interface. As far as STP is concerned, members of a LAG do not have individual link state. (Internally, the STP state of the LAG interface is replicated for the member links.) When members are deleted from a LAG they become normal links, and spanning tree maintains their individual link state information. Statistics Statistics are collected for LAGs in the same manner as they are collected for the physical ports, in addition to the statistics collected for individual members as per the 802.3ad MIB statistics. LAG Configuration Guidelines Ports to be aggregated must be configured so that they are compatible with the link aggregation feature and with the partner switch to which they connect. Ports to be added to a LAG must meet the following requirements: • Interface must be a physical Ethernet link. 1082 Link Aggregation