Gigabit Ethernet 4-Port Adapter Installation and Support Guide

Introduction to the Gigabit Ethernet 4-Port ServerNet

Adapter (G4SA)

Gigabit Ethernet 4-Port ServerNet Adapter Installation and Support Guide—528166-006

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Maintenance Entity (ME) Interface

The Maintenance Entity (ME) interface contains the circuitry required to meet the

maintenance system requirements of an active-logic adapter, which includes:

•

Access to the maintenance-system features of the adapter, which allow you to:

Power the adapter on or off

Identify the type, configuration, and revision of the adapter

•

A serial EEPROM (SEEROM) that provides:

Hardware identification (part number and revision)

Manufacturing tracking (serial) number

Hardware error data

Power Interface

The G4SA receives power through a shielded, high-density, metric connector module.

The connector module provides attachments to the two ServerNet fabrics.

Relationship to the SLSA Subsystem

G4SAs are configured and managed through the Subsystem Control Facility (SCF)

interface to the ServerNet LAN Systems Access (SLSA) subsystem. The SLSA

subsystem is preinstalled and preconfigured and is started during the system-load

sequence.

During the system-load sequence, the persistence manager ($ZPM) starts the primary

and backup LAN Manager (LANMAN) processes ($ZZLAN) in processors 0 and 1. The

LANMAN process then starts the LAN Monitor (LANMON) processes in each

processor of the system and attempts to assign the SAC on a G4SA to a LANMON

process. Each LANMON process then initializes the SAC, physical interface (PIF), and

the logical interface (LIF) associated with the PIF. The LANMON process reports any

state transitions to other LANMON processes.

Refer to the LAN Configuration and Management Manual for information about the

SLSA subsystem.

Note. SCF commands issued to the LANMONs or the LANMAN will not be accepted while

processes are starting or if the backup LANMAN is taking over from the primary LANMAN. The

SLSA subsystem will return the following error message: SLSA process is busy....