STM-4 - Network Element Software

VCL100 STM-1/4 Network Element Software

The VCL100 STM-1/4 node is managed through the embedded NES (Network Element Software). The main capabilities of NES are listed below: ·

Switchover to redundant processor, power supply, cross-connect and aggregate cards, in the event of any hardware fault.
Auto Recovery after Input Power Failure in a redundant system
Node-wise Operations & Maintenance
User programmable severity levels for Alarms
Node-wise Alarming & Remote Login.
Performance monitoring as per the standard specifications (G.826).
In-service monitoring of E1 tributaries.

User can access and control all of the above-mentioned features using a standard HTTP based web browser by enabling the Web server software module (NES-WEB-HTTP) within the Network Element Software. The Ethernet interface on the MIC (Management Interface Card) is to be used as the physical data connection for this purpose.

NES also allows users to control remote nodes using SDH DCC bytes by enabling the in-band communication module (NES-IBC).

To provide network wide management and control of VCL100 STM-1/4 nodes through industry standard Network Management Systems, users can enable the Simple Network Management Protocol interface software module (NES-SNMP). This module provides open interfaces which can be also be used by Network Management System (NMS) which is described later in this document.

The point-and-click provisioning tool (PNCP) is a set of software modules that enables customers to provision end-end circuits is a network that comprises all family of SDH products. Users can enable this feature using the node-resident software module NES-NODE-PNCP, and the server-resident software module NES-HOST-PNCP.

Network Management System

STM-1/STM-4 provides support for centralized network management through Network Management System (NMS).

Operations Interfaces

10/100 Mbps half-duplex LAN interface for NMS data connection to VCL100 STM-1/4 node (RJ45 connector)
RS232C Craft interface for local Command Line Interface data connection
2 wire analog telephone interface for Engineering Order Wire (E1 or E2 bytes access) with omnibus calling
In-band control channel supported for remote management (F2 & F3 bytes used from POH)

Upgrades

VCL100 STM-1/4 supports hitless upgrade from STM-1 to STM-4 by replacing the redundant STM-1 aggregate by STM-4 aggregate