108
5-4-5. Trunking The Link Aggregation Control Protocol (LACP) provides a standardized
means for exchanging information between Partner Systems on a link to
allow their Link Aggregation Control instances. To reach agreement on the
identity of the Link Aggregation Group to which the link belongs, move the link
to that Link Aggregation Group, and enable its transmission and reception
functions in an orderly manner. Link aggregation allows grouping of up to
eight consecutive ports into a single dedicated connection. This feature can
expand bandwidth to a device on the network. LACP operation requires
full-duplex mode. For more detailed information refer to IEEE 802.3ad.
If there are two trunk groups A and B, and B group is enabled LACP, then it
will act as a redundant link (Backup group for Trunk group A). If trunk group A
fails, Group B will be its backup.