When one end of an EtherChannel has more members than the other, the unmatched ports enter the standalone state. In a topology that is not protected from Layer 2 loops by the spanning tree protocol (STP), a port in the standalone state can cause significant network errors. For LACP EtherChannels with Release 12.2(33)SXI3 and later releases, you can enter the
In quite a large scale, we have discussed how an improper configuration of EtherChannels leads to switching loops. Note that it is not important if the EtherChannel operates as an access or a trunk port.