LAN-module indicators and input/output connectors

The LAN module is a hot-swap module that is installed on the rear of the BladeCenter T unit and is held in place by captive thumbscrews. The LAN module provides the electrical and mechanical interface to the BladeCenter T unit for the two local area network (Ethernet) connections, as driven from each management module, and the telco external alarms. This module contains two RJ-45 connectors with LEDs and one DSUB 15P telco alarm connector.

Thumbscrews

Remote management and console (Ethernet)

2 1

Alarms

Ethernet link LED

Ethernet activity LED

Alarms connector

LAN-module LEDs: These LEDs provide status information about the LAN connection:

vEthernet link: When this green LED is lit, there is an active connection through the port to the network.

vEthernet activity: When this green LED is flashing, it indicates that there is activity through the port over the network link.

LAN-module connectors:

vRemote management and console (Ethernet) connectors: The LAN module provides two Ethernet RJ-45 connectors.

The BladeCenter T LAN module contains two 10/100 Mb Ethernet connectors that provide the remote connections, driven from each management module, to the network management station on the network.

Use these ports for remote management and remote console.

The network management station, through these connectors, can access control functions running in the management module, the service processor on each blade server, or within each switch module. However, it cannot use these ports to communicate with application programs running in the blade servers. The network management station must direct those communications through a network connected to the external ports in the I/O modules in the BladeCenter T unit.

vAlarms connector: The LAN module provides one telco DB15 alarms connector (male) for critical, major, and minor telco alarms. Each of the alarms has a relay that enables multiple system alarm indicators to be daisy-chained together.

Table 4 on page 19 shows the pinouts for the telco alarms connector.

Alarms

18

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18BladeCenter T Type 8720 and 8730: Hardware Maintenance Manual and Troubleshooting Guide

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IBM Type 8730, Type 8720 manual Alarms, LAN-module indicators and input/output connectors

Type 8730, Type 8720 specifications

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