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This chapter provides an overview of the Cisco Metro 1500 series metropolitan area network (MAN) dense wavelength division multiplexing (DWDM) system. The Cisco Metro 1500 series system is a high-performance, wavelength division multiplexer for bidirectional point-to-point data communication. It is designed for communication over optical links in which different devices or applications are communicating over multiple fibers. Using wavelength conversion, several devices can communicate while being connected over one duplex fiber or two single fibers.
The network element management interface (NEMI) is a plug-in module that is inserted into the Cisco Metro 1500 series primary chassis and extension chassis B. This interface uses Internet protocols to provide the management 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 panel of a NEMI, which can be used for serial-based setup and can be configured to deliver serial- or modem-based Internet protocol connectivity and management with Point-to-Point Protocol (PPP) support.
The device element management interface (DEMI) is a plug-in module that can be inserted in extension chassis A and C of the Cisco Metro 1500 series. This interface provides status and configuration capabilities of the chassis. Both the DEMI and its NEMI are connected with a bus cable. This configuration unites management and control of both chassis into a single unit.
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Note EIA/TIA-232 and EIA/TIA-449 were formerly known as recommended standards RS-232 and RS-449 before their acceptance by the Electronic Industries Alliance (EIA) and Telecommunications Industry Association (TIA). |
The NEMI runs Linux 2.0.35. Linux starts automatically when the system is powered up. The system is typically ready for operation about 20 seconds after power up.
Posted: Tue Jun 6 18:29:31 PDT 2000
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