Switch Configuration Guide

Configuring LACP
Matrix Series Usage Considerations
4-96 Matrix NSA Series Configuration Guide
4.5.3 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 (Section 4.5.4.7).
Each Matrix Series module provides virtual link aggregator ports, which are designated in the CLI
as lag.0.1 through lag.0. 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 by
comparing operational keys. Aggregator ports allow only underlying ports with keys matching
theirs to join their LAG.
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 4.5.4.4), or the set port lacp
command (Section 4.5.4.13).
Table 4-8 LACP Terms and Definitions (Continued)
Term Definition