Allied Telesis SwitchBlade x3100 Series User Manual

Introduction Introduction
4-23
Software Reference for SwitchBlade x3100 Series Switches (Layer Two Switching)
4.3 Link Aggregation (LAG)
4.3.1 Introduction
The Link Aggregation Group (LAG) feature, defined in 802.3ad, allows multiple physical links to be joined into a
LAG, which creates one virtual link. If one link fails, traffic is distributed to the remaining inservice links. Links
can be added or deleted from the LAG, depending on traffic requirements.
The following figure shows a basic LAG configuration for the SBx3112.
FIGURE 4-1 Upstream Protection Using LAG - SBx3112
The LAG feature works on all the Allied Telesis products, but there are key differences in how they can be
deployed for the SBx3112.
The SBx3112 supports cross-card LAG, across like interfaces (GE or XE), on all line cards. The SB x3112 sup-
ports one hash select algorithm for the entire switch, which can be set using the
set switch hash select
CLI command. Setting the switch hash select affects the behavior of all existing LAGs.
lagid 1 lagid 2
CFC
SBx3112
SBx3100
= Line
Card
= Interface

Allied Telesis SwitchBlade x3100 Series Specifications

General

Brand	Allied Telesis
Model	SwitchBlade x3100 Series
Category	Switch
Language	English