Dell N3200-ON Networking N-Series Switches CLI Reference Guide version 6.8.0 - Page 699

unable to buffer the requisite number of frames will show excessive frame discard. Configuring copper and fiber ports together in an aggregation group is not recommended. If a dynamic LAG member sees an LACPDU that contains information different from the currently configured default partner values, that particular member drops out of the LAG. This configured member does not aggregate with the LAG until all the other active members see the new information. When each of the other active members sees the new information, they continue to drop out of the LAG. When all the members have dropped out of the LAG, they form an aggregate with the new information. Static LAGS A static LAG is fundamentally no different from a dynamically configured LAG. All the requirements for the member ports hold true (member ports must have same duplex settings, same speed, and so on). The only difference is this LAG has an additional parameter static which makes this LAG not require a partner system running Link Aggregation Control Protocol (LACP) to be able to aggregate it's member ports. Care must be taken while enabling this type of configuration. If the Partner System is not 802.3AD compliant or the Link Aggregation Control protocol is not enabled, there may be network instability. Network instability occurs when one side assumes that the members in an aggregation are one single link, while the other side is oblivious to this aggregation and continues to treat the 'members' as individual links. A static LAG does not transmit or process received LACPDUs, that is, the member ports do not transmit LACPDUs and all the LACPDUs it receives are dropped. A dropped counter is maintained to count the number of such PDUs. Configured members are added to the LAG (active participation) immediately if the LAG is configured to be static. There is no wait time before we add the port to the LAG. A LAG can be either static or dynamic, but not both. It cannot have some member ports participate in the protocol while other member ports do not participate. Additionally, it is not possible to change a LAG from static to dynamic via the CLI. You must remove the member ports from the static LAG and then add them to the dynamic LAG. Layer 2 Switching Commands 699