Specifications

Overview: Link Aggregation Control Protocol (LACP)
LACP Terminology
3-94 Matrix DFE-Gold Series Configuration Guide
3.5.2 LACP Terminology
Table 3-8 defines key terminology used in LACP configuration.
Table 3-8 LACP Terms and Definitions
Term Definition
Aggregator Virtual port that controls link aggregation for underlying physical
ports. Each Matrix Series module provides aggregator ports, which
are designated in the CLI as lag.0.1 through lag.0.4.
LAG Link Aggregation Group. Once underlying physical ports (i.e.;
fe.x.x, or ge.x.x) are associated with an aggregator port, the resulting
aggregation will be represented as one LAG with a lag.x.x port
designation.
LACPDU Link Aggregation Control Protocol Data Unit. The protocol
exchanges aggregation state/mode information by way of a port’s
actor and partner operational states. LACPDUs sent by the first party
(the actor) convey to the second party (the actor’s protocol partner)
what the actor knows, both about its own state and that of its partner.
Actor and Partner An actor is the local device sending LACPDUs. Its protocol partner
is the device on the other end of the link aggregation. Each maintains
current status of the other via LACPDUs containing information
about their ports’ LACP status and operational state.
Admin Key Value assigned to aggregator ports and physical ports that are
candidates for joining a LAG. The LACP implementation on Matrix
Series devices will use this value to form an oper key and will
determine which underlying physical ports are capable of
aggregating by comparing oper keys. Aggregator ports allow only
underlying ports with oper keys matching theirs to join their LAG.
System Priority Value used to build a LAG ID, which determines aggregation
precedence. If there are two partner devices competing for the same
aggregator, LACP compares the LAG IDs for each grouping of ports.
The LAG with the lower LAG ID is given precedence and will be
allowed to use the aggregator.
NOTE: Only one LACP system priority can be set on a
Matrix Series device, using either the set lacp asyspri
command (Section 3.5.4.4), or the set port lacp
command (Section 3.5.4.13).