Lacp Terminology; Matrix Series Usage Considerations; Lacp Terms And Definitions - Enterasys Matrix DFE-Gold Series Configuration Manual

Configuring LACP
• 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.

LACP Terminology

Table 4‐8 defines key terminology used in LACP configuration.
Table 4-8 LACP Terms and Definitions
Term
Aggregator
LAG
LACPDU
Actor and Partner
Admin Key
System Priority

Matrix Series Usage Considerations

In normal usage (and typical implementations) there is no need to modify any of the default
LACP parameters on the Matrix Series device. The default values will result in the maximum
number of aggregations possible. If the switch is placed in a configuration with its peers not
running the protocol, no dynamic link aggregations will be formed and the switch will function
normally (that is, will block redundant paths). For information about building static aggregations,
refer to set lacp static ("set lacp static" on page 4‐62).
Each Matrix Series module provides 4 virtual link aggregator ports, which are designated in the
CLI as lag.0.1 through lag.0.4. 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. LACP determines which underlying physical ports are capable of aggregating
4-56 Port Configuration
Definition
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.
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.
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.
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.
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
or the set port lacp command
("set lacp asyspri" on page 4-60),
("set port lacp" on page 4-66).
clear port mirroring