1152700• Issue 1 • February 2001 • Section 1 Introduction
A.Real-time Alarm and Trap Screens
The Cellworx NMIC provides real time alarm monitoring capabilities to an External Management System (EMS) via SNMP traps through an Ethernet port on the NMIC EIM. This scheme supports remote retrieval of NMIC collected data for user manipulation and report creation via ftp using four simple file types. These files are comma, space, or tab delimited and cover the following categories of collected data: Alarm history, Accounting, PM data, and Network Data Collection.
The NMIC serves as an ATM domain operations interface provided on a Cellworx STN shelf configured as a Gateway Network Element (GNE), generally located in the CO or manned site. The NMIC can process 1.6K TFTP (Trivial FTP)/FTP packets as well as 0.8Mbytes of data per second, serving as an FTP server for each of the NE Shelf Controllers (SCs). The alarm history from each of the NE SC traps is stored up to 24 hours for future queries. The NMIC sends an SNMP request to the destined NE based on legitimate SNMP requests received from the EMS, and discards all IP packets that are different from its IP address.
The SNMP MIB for ring management is ATM Forum network view M4 based. The NE processes up to ten SNMP traps per second also.
Page
© 2000, ADC Telecommunications, Inc.
