Chapter 1 Product Overview
System Modules
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Cisco Metro 1500 Series Hardware Installation Guide
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The TDM4E channel modules are double width. A maximum of four modules
can be placed in one chassis.
Network Element Management Interface
The NEMI is a two-slot plug-in module that can be configured by software to be
either a NEMI-master or a NEMI-slave. The NEMI resides in the following
chassis: in the primary chassis (Figures 2-3 and 2-4), chassis B (Figure 2-6),
chassis D, and chassis F. This interface provides status and configuration
capabilities.
A management computer can be connected directly to the NEMI when using a
serial LapLink cable or a crossover Ethernet cable. Ethernet networks with more
than two computers require an Ethernet hub. The NEMI functions under version
2.0.35 of the Linux operating system.The NEMI module provides the following:
• Connection to the network using standard Internet protocols
• Remote management and configuration of all interconnected chassis
• SNMP monitoring and trap generation
Systems with 24 to 32 channels require the installation of a second NEMI module
in extension chassis B. When the two NEMI modules are interconnected using an
inter-NEMI network connection (INNC), one NEMI module is configured as the
NEMI-master, while the second is configured as the NEMI-slave.
Note The NEMI-master and the NEMI-slave are physically identical
modules and differ only in software configuration.
