Lacp Terminology - Enterasys Matrix 2G4072-52 Configuration Manual

Configuring LACP

LACP Terminology

The operation of LACP involves the following activities:
•
Checking that candidate links can actually be aggregated.
•
Controlling the addition of a link to a LAG, and the creation of the group if necessary.
•
Monitoring the status of aggregated links to ensure that the aggregation is still valid.
•
Removing a link from a LAG if its membership is no longer valid, and removing the group if it
no longer has any member links.
In order to allow LACP to determine whether a set of links connect to the same device, and to
determine whether those links are compatible from the point of view of aggregation, it is necessary
to be able to establish
•
A globally unique identifier for each device that participates in link aggregation.
•
A means of identifying the set of capabilities associated with each port and with each aggregator,
as understood by a given device.
•
A means of identifying a LAG and its associated aggregator.
4.5.2 LACP Terminology
Table 4-8 defines key terminology used in LACP configuration.
Table 4-8 LACP Terms and Definitions
Term
Aggregator
LAG
LACPDU
4-96 Matrix DFE-Platinum and Diamond Series Configuration Guide
Definition
Virtual port that controls link aggregation for underlying physical
ports. Each Matrix Series module provides 48 aggregator ports,
which are designated in the CLI as lag.0.1 through lag.0.48.
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.
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.