Scientific Atlanta Rosa User Manual

Network Management

ROSA™ EM - Element Management System

Description

The ROSA™ Element Manager (EM) is specifically designed to cost effectively monitor and control the transmission network of headends, hub sites and HFC outside plants, and transmitter sites. This unit manages the equipment that is colocated on the site where the ROSA EM resides, whether this equipment has an SNMP, serial (RS-232/422/485) or contact closure interface.

The main functions of the ROSA EM are to:

•Monitor the health of the transmission network

•Act as an SNMP proxy

•Send alarm notifications when a problem occurs

•Automatically backup failed devices

•Perform local automation tasks

The ROSA EM supports several hundred Scientific-Atlanta and third-party devices. Support for new devices is continuously being added to the ROSA EM, which can be exported to existing installations with a simple software upgrade.

The ROSA EM actively polls all of the devices that it manages looking for problems and in the event a problem is detected, ROSA EM will send alarm notifications to the appropriate personnel via SNMP trap, Email, Pager or SMS. ROSA EM communicates with the managed devices via their proprietary protocols or contact closures then translates this information to SNMP, which can be passed to a higher level network management system. When ROSA EM is configured to perform backup protection it will automatically initiate pre-defined backup schemes that reroutes signals, activates and configures standby devices all within seconds of a device failure.

The ROSA EM is a 2 RU high, 19-inch rack-mount embedded platform that operates without a monitor or keyboard. The operator interfaces with the ROSA EM via a simple easy-to-use and understand Web browser client. Communication to the ROSA EM can be established over any LAN/WAN network that supports Ethernet. In addition, dial-in and dial-out (e.g., ISDN) is supported for cases where only a switched connection is available.

Features

•Cost-effective solution for management of devices in all locations (large headend to small hubs/OTN)

•Manages Scientific-Atlanta and third-party equipment via proprietary protocol, SNMP, or contact closures

•Translates proprietary protocols to SNMP and passes configuration/alarm information to network managers

•Highly reliable (no fans, no hard drive) hardware and software solution

•Alarm notification with Email, Pager or SMS

•Easy to use, intuitive Web browser interface

•Provides easy integration with multiple client options – Web browser, TNCS, ROSA NMS, 3rd Party NMS

•Open standards based interfaces (SNMP, HTTP, FTP, HMS, DateTime, etc.)

•Delivered with software already installed

•Software can be upgraded remotely over LAN/WAN

•Automatic remote backup and restore to save the entire configuration of the ROSA EM

•Seamless integration into currently installed TNCS and ROSA systems

•Dual temperature probes available as option

•2 RU, 19-inch rack-mount chassis

ROSA EM - Element Management System

Operation

ROSA EM supports open standards interfaces, which enable cost-effective integration of equipment into the ROSA EM, as well as cost-effective integration of the ROSA EM into upper-level network managers.

	HTTP Web interface
FTP SW upgrade
and backup/restore	SNMP Network Managers

LAN/WAN

		ROSA EM
	•Alarm collection (polling)		•Timed Events & automation
	•Alarm notification		•Auto time synchronization
	•SNMP proxy agent		•Auto dial-up with SNMP trap
	•Redundancy backup		buffering
	I/O contact closures				°C		°F
	Serial Interfaces
(RS232/RS485/RS422)			SNMP Enabled Devices

The northbound management interfaces are composed of:

•Web browser client interface on the ROSA EM that allows management of network devices as well as viewing real-time status and alarms.

•The SNMP agent in ROSA EM provides a northbound SNMP interface to higher level Network Management Systems (supports TRAPS, GETS and SETS).

•Utilizes FTP to remotely upgrade ROSA EM software as well as the backup and restoration of ROSA EM configuration data.

The southbound management interfaces are designed to communicate with the managed devices and consist of:

•Multiple serial ports (RS-232, RS-485, RS-422)

•Digital and analog I/O contact closures interface

•SNMP Manager

•Temperature probes

•Network interface card

Flexible Client Options

There are four fundamental client options available for the ROSA EM; a simple Web browser, TNCS client, ROSA NMS client and third party Network Management Systems each designed to meet specific needs of the user. ROSA EM can be configured to do as much or as little as required to meet the needs of the technicians and engineers charged with managing the broadband network.

•Simple Web Browser – The user will open a Web browser window for each ROSA EM site. This is an ideal application for small systems that have only one or two sites with ROSA EM installed.

•TNCS Client – The TNCS client will aggregate all of the ROSA EM sites to produce a single network view that is easy to understand. In addition, TNCS will aggregate the alarms, perform multi-site backup schemes and retain historical logs for alarms, system executables, and software status for all of the ROSA EM sites.

ROSA

TNCS Client

Client

Web

Browser

3rd Party

Client

LAN / WAN

ROSA EM

ROSA EM

ROSA EM

Network Elements

Network Elements

Network Elements

•ROSA NMS Client – A ROSA client

provides all of the TNCS functionality as well as a relational database that enables the operator to produce performance and trending reports on the network, the managed devices, and overall system performance. ROSA also has several modular advanced tasks that provide significant added value to system operators, engineers and managers.

•Third-Party Client – ROSA EM is ideally suited to integrate into an overall 3rd party NMS via SNMP. The northbound SNMP interface in ROSA EM supports Traps, Gets and Sets allowing the overall NMS to have control of the managed devices. Launching the Web browser in ROSA EM allows the NMS operator to easily view the details of any managed device from the operations center.

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ROSA EM - Element Management System

Specifications

Remote Control and Configuration Ports (*)

Ethernet management port
Number of ports	2
Connector type	RJ-45
Physical layer	10/100Base-T
LED indication	LINE and ACT
Dielectric isolation	1.5 kV AC
Note: In case a client (simple Web browser, TNCS client,
ROSA NMS client or third party NMS) is used in combination
with ROSA EM, it must be possible to perform a successful
ping command between ROSA EM and the client in both
directions.
RS-232 Serial Ports
Number of ports	4
Connector type	Male, 9 pin Sub-D
Pin layout	Standard DTE
Physical layer	RS-232
Baud rate	Up to 38.4 kbaud
Protocol	RCDS, SMC or other
ESD	Max. 15 kV Performance Criterion B
RS-232 - RS-485 - RS-422 Serial Ports (configurable)
Number of ports	4
Connector type	Male, 9 pin Sub-D
Pin layout	Configurable (for RCDS or SMC pin layout refer to user’s
Physical layer	guide)
	RS-232, RS-422 or RS-485
Baud rate	Up to 38.4 kbaud
Protocol	RCDS, SMC or other
ESD	Max. 15 kV Performance Criterion B
Digital Input Ports
Number of ports	108
Connector type	Female, 25 pin Sub-D
Contacts per port	2
Decision threshold	TTL / CMOS
Input voltage range	Max. ± 15 V
ESD	Max. 15 kV Performance Criterion B
Galvanic Isolated Digital Input Ports
Number of ports	12
Connector type	Female, 25 pin Sub-D
Contacts per port	2
Decision threshold	Low: < 0.8 V, High: > 2 V
Differential over voltage protection	Max. ± 15 V
Common mode input voltage	Max. 60 V DC or 42 V AC
ESD	Max. 15 kV Performance Criterion B
Dielectric isolation	500 V port to port
Relay Outputs
Number of ports	24
Connector type	Female, 25 pin Sub-D
Contacts per port	3 (common, normal open, normal closed)
Maximum voltage	42 V AC / 60 V DC
Maximum load current	1 A @ 30 V DC
Dielectric isolation	500 V
Load	Resistive load
External Temperature Sensor
Number of ports	2
Note: Temperature sensors available as an option.

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