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ATM Protocol Analyzer for OC-3 / STM-1
and OC-12 / STM-4



ATM in a OC-3 / STM-1 OC-12 / STM-4 Network

  Download ATM Protocol Analyzer for OC-3 / STM-1 and OC-12 / STM-4 Product Brochure


Overview

Asynchronous Transfer Mode (ATM) is a flexible network, which carries voice, video, and data in the same way, i.e. fixed length cells. It has generated a number of revenue opportunities because of its different classes of service support for multimedia traffic, efficient bandwidth management for burst traffic, support for LAN/WAN architecture and high performance via hardware switching.

 
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ATM network basically has two kinds of interfaces i.e. UNI (Interface between ATM User and Public ATM switch) and NNI (Interface between two Public ATM switches). Similar to the OSI Protocol model, ATM protocol architecture has an ATM Layer as Layer 2, ATM Adaptation Layer (AAL) as Layer 3, and other higher layers depending on C-Plane, U-Plane or Layer Management Plane. User information is transferred across U-Plane and Signaling messages are transferred across C-Plane. ATM-UNI signaling is used to create and release SVCs along with a particular QoS attached to it depending bandwidth on demand.

GL's OC-3 / STM-1 OC-12 / STM-4 ATM Analyzer is used to analyze and decode different ATM protocols like ATM, AAL2 Protocols (CPS-SDU, SSSAR-SDU, and SSCS), AAL5 (CPCS), UNI and others across U plane and C plane of UNI and NNI interface. The analyzer can also decode ATM frames constituting Classical IP over ATM, or CIP based networks, and traditional SS7 Stack (ISUP, SCCP, MAP, CAMEL(CAP) etc) over ATM.

The ATM Analyzer can capture, decode, filter, and reassemble AAL-2 and AAL-5 frames in real-time, from within the ATM cells according to user defined VPI/VCI.  The real-time ATM Analyzer requires GL's LightSpeed1000™ internal PCIe cards or USB external units, along with licenses and Windows® XP (or higher) OS


ATM Analyzer Main Features

Display Features
  • Displays Summary, Detail, Hex-dump, and Statistics Views
  • Detail View
    • Displays decodes of a user-selected frame from the summary view
    • Provides options to display or hide the required protocol layers
    • Contents of this view can also be copied to clipboard
  • Summary view displays Dev #, Frame #, VPI/VCI, PT (Payload Type), HEC, OSF, AAL Type, Frame Type, CID, LI, CPI, UUI, SSSAR CID, SSCS message type and more in a tabular format
  • Any protocol field can be added to the summary view, filtering, and search features providing users more flexibility to monitor required protocol fields.
Supported Protocols UNI signaling protocols i.e. UNI 4.0, UNI 3.1 and UNI Q-293.
Filtering and Search Advanced filtering and search based on any user selected protocol fields
Capturing Streams and Decoding Frames
  • Streams may be captured on the selected ports
  • Multiple streams of ATM traffic on various ports can be simultaneously decoded with different GUI instances
  • Captures, decodes, filters, and reassembles AAL-2 and AAL-5 frames in real-time, from within the ATM cells according to user defined VPI/VCI.
  • Supports decoding of Classical IP over ATM, Multi-Protocol Over ATM, and SS7 signaling over ATM
Export Options
  • Exports Summary View information to a comma delimited file for subsequent import into a database or spreadsheet.
  • Capability to export detailed decode information to an ASCII file
Additional Features of ATM
  • Ability to configure .ini file for PVC carrying UNI signaling messages to get the proper decoding options.
Remote Monitoring Remote monitoring capability using GL's Network Surveillance System

Protocols Supported

For the list of supported protocols that are supported by GL's OC-3 / STM-1 OC-12 / STM-4 ATM analyzer visit ATM Supported Protocols web page..


Summary, Detail, and Hexdump Views

The ATM Protocol Analyzer application is invoked from the main menu of GL's OC-3 / STM-1 OC-12 / STM-4 ATM Analyzer for real-time analysis. The analyzer displays Summary, Detail, Hex Dump, Statistics, and Call Detail Views in different panes. The Summary pane displays Dev#, Frame#, Time, Length, Error, VPI/VCI, PT and so on. User can select a frame in Summary View to analyze and decode each frame in the Detail View. The Hex Dump View displays the frame information in HEX and ASCII format.



Protocol Summary, Detail, and Hex Dump Views in ATM Protocol Analysis

Real-time and Offline Analysis

Users can capture and analyze UNI or NNI interfaces in real-time and record all or filtered traffic into a trace file. The recorded trace file can then be analyzed offline and exported to ASCII file, and printed. User can capture raw ATM data and transmit using “Rx Packets to File” application.



Port Selection for Real-time Capture

Filtering and Search

Users can record all or filtered traffic into a trace file. Filter and search capabilities adds a powerful dimension to the ATM Analyzer. These features isolate required frames from all the captured frames in real-time, as well as offline. Users can specify VPI, VCI, and PT type values to filter frames during real-time capture. The frames can also be filtered after completion of capture according to Dev#, Frame #, Time, Length, Error, VPI/VCI, PT (Payload Type), HEC, OSF, AAL Type, Frame Type, CID, LI, CPI, UUI, and more. Similarly, search capability helps user to search for a particular frame based on specific search criteria.



Offline Filtering and Search Criteria for ATM Protocol Analysis




Real-time/Pre-Capture Filtering Criteria for ATM Protocol Analysis

Reassembly

Using reassembly option user can specify VPI /VCI values to reassemble as per the Segmentation and Reassembly rules defined by the specified AAL type. It multiplexes ATM cells as per the user specified VPI/VCI/AAL type into CPS or SAR frames. ATM cells not satisfying the user specification will be reassembled as per the default specification.



Reassembly Options for ATM Protocol Analysis

Call Detail Record and Statistics View

Call trace defining important call specific parameters like Call ID, Call disposition, Call duration, VPI/VCI, Call type (point-to-point/point-to-multipoint etc) calculated based on UNI signaling messages are displayed in Call Detail view.

Statistics is an important feature available in ATM analyzer and can be obtained for all frames both in real-time as well as offline mode. Various statistics can be obtained in Statistics View to study the performance and trend in the ATM network based on protocol fields and parameters.



Statistics Options for ATM Protocol Analysis

Enhanced Trace Saving Options

Users can control the captured trace files by saving the trace using different conventions such as trace files with user-defined prefixes, trace file with date-time prefixes, and slider control to indicate the total number of files, file size, frame count, or time limit. This feature also allows the captured frames to be saved into a trace file based on the filtering criteria set using display filter feature.



Protocol Trace Saving Options for ATM Protocol Analysis

Buyer's Guide

Item No Item Description
LTS204 OC-3 / STM-1 ATM Protocol Analysis
LTS304 OC-12 / STM-4 ATM Protocol Analysis
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