Fabric Manager Users Guide, Version 6.1, Revision A - QLogic

1 Overview of the QLogic
Fabric Manager Suite
Component Overview
Subnet Manager
The QLogic Fabric Manager (FM) suite is a set of components that perform
various functions for the management of the fabric. These components consist of:
• Subnet Manager (SM)
• Subnet Administration (SA)
• Performance Manager (PM)
• Baseboard Manager (BM)
• Fabric Executive (FE)
The Subnet Manager component performs all of the necessary subnet
management functions as specified by the InfiniBand Architecture Specification
Release 1.2.1, volume 1, chapter 14. Primarily, the SM is responsible for
initializing the fabric and managing its topology. Some of its tasks include:
• Link and port initialization
• Route and path assignments
• Local Identifier (LID) assignments
• Switch forwarding table programming
• Programming InfiniBand vFabrics TM
• Sweeping the fabric to discover topology changes, managing those changes
when nodes are added and/or deleted
The SM communicates with the Subnet Management Agent (SMA) on each node
of the fabric, using the SM packets. Refer to Figure 1-1.
IB0054608-01 B 1-1