Network Element Management Interface (NEMI)

This chapter describes the NEMI, how to install it, and the software that runs on it. The NEMI is a plug-in module that can be inserted into the primary chassis and extension chassis B of the Cisco Metro 1500 series system. This interface provides status and configuration capabilities of up to two chassis of the system. A NEMI network management system can be connected through an Ethernet connection to a computer or local area network. An EIA/TIA-232 port is available on the front panel of the NEMI. This EIA/TIA-232 port can be used for modem connections and supports PPP.

Figure 2-1 shows the NEMI front panel. Table 2-1 describes the functions of the LEDs shown in Figure 2-1.

Figure 2-1: NEMI Front Panel

LED Functions

Table 2-1 describes the functions of the LEDs shown in Figure 2-1.

Table 2-1: LED Function Descriptions

LED Mode Description

Power

Power on

LED is on while powered up.

Link

Link is established

LED is on while 10BaseT network is established.

Receive

Link is active

LED is blinking while traffic is on the network.

Error

Error

LED is on while any error is occurring.

Err. Int. BUS

Error of internal bus

LED is on while any error of internal bus is occurring.

Err. Ext. BUS

Error of external bus

LED is on while any error of external bus is occurring.

LED	Mode	Description
Power	Power on	LED is on while powered up.
Link	Link is established	LED is on while 10BaseT network is established.
Receive	Link is active	LED is blinking while traffic is on the network.
Error	Error	LED is on while any error is occurring.
Err. Int. BUS	Error of internal bus	LED is on while any error of internal bus is occurring.
Err. Ext. BUS	Error of external bus	LED is on while any error of external bus is occurring.

Installation Procedure

Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment.

To install the NEMI module, follow these steps:

Step 1 Remove both blank filler panels. See Figure 2-2.

Figure 2-2: NEMI Placement in the Primary Chassis and Extension Chassis B

Step 2 Slide the NEMI into the unit until the connectors on the module come into contact with the backplane connectors. A force of up to 1 lb (4.5 newton) is necessary to push the module completely into the chassis. The green power LED comes on when the NEMI is in contact with the backplane.

Caution It is critical to insert the module gently. If you need a force greater than 1 lb (4.5 newton) to push in the NEMI, stop immediately.

Step 3 Secure the NEMI in the housing after achieving full contact. Use four screws on the front panel while holding the module in position.

Step 4 Save the blank filler panels with the packaging material.

The green power LED comes on and the NEMI starts up.

NEMI Software

The NEMI runs Linux 2.0.35. Linux starts automatically when the system is powered up. The system is typically operational about 20 seconds after power up.

Linux needs to be configured for the specific environment. See "System Configuration" for configuration information.

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