The Inverse Multiplexing over ATM (IMA) Emulator application can simulate the inverse multiplexing of an ATM cell stream over multiple physical links and retrieve the original stream at the far-end from these physical links. The multiplexing of the ATM cell stream is performed on a cell by cell basis across the multiple physical links. Traffic source can be sequence number, HDL files (containing packets/frames), flat binary file, user-defined frames (ASCII HEX file), and Ethernet data.
The ATM Inverse Multiplexing technique involves inverse multiplexing and de-multiplexing of ATM cells in a cyclical fashion among links grouped to form a higher bandwidth logical link whose rate is approximately the sum of the link rates. This technique provides an effective method of combining the transport bandwidths of multiple links (e.g., DS1/E1 links) grouped to collectively provide higher intermediate rates. This is referred to as an IMA grouping.
Along with AAL0 and AAL5 IMA supports AAL2 which provides bandwidth-efficient transmission of low-rate, short and variable length packets in delay sensitive applications. AAL2 also provides for variable payload within cells and across cells by using segmentation and reassembly technique. AAL type 2 is subdivided into the Common Part Sublayer (CPS) and the Service Specific Convergence Sublayer (SSCS).
GL’s IMA Emulator is available as optional client-server based application with GL’s T1/E1 Analysis hardware. GL also offers ATM analysis application for real-time capture and analysis of ATM IMA cells over T1 E1 lines. Please visit ATM Protocol Analyzer page for more details.
Main Features:
Performs IMA simulation on up to 16 T1/E1 ports
ATM links can be created on full or fractional timeslots
Supports hyper channels with discontinuous (sparse) timeslots
IMA Frame Length can be set equal to 32, 64, 128, or 256
Dynamically add/remove (Open/Close) of ATM links without loss in data
Multiple IMA groups can be created with each group configured with multiple virtual channels for traffic tx/rx.
Generate and verify end to end traffic on each Virtual Channel
User configurable ATM (AAL 5, AAL 2) Packet size.
Payload traffic generation and verification using Sequence number, HDL file (containing packets/frames), Flat Binary file, and User defined frame (ASCII HEX file) for each Virtual Channel independently
Transmit and receive Ethernet traffic over T1E1 links by operating in bridge mode
Provides detailed statistics for all IMA groups and each Virtual Channel associated with a group
Provides end to end traffic verification statistics
Ideal solution for automated testing using command line scripts
The Inverse Multiplexing over ATM (IMA) Emulator application can simulate the inverse multiplexing of an ATM cell stream over multiple physical links and retrieve the original stream at the far-end from these physical links. The multiplexing of the ATM cell stream is performed on a cell by cell basis across the multiple physical links. Traffic source can be sequence number, HDL files (containing packets/frames), flat binary file, user-defined frames (ASCII HEX file), and Ethernet data.
The ATM Inverse Multiplexing technique involves inverse multiplexing and de-multiplexing of ATM cells in a cyclical fashion among links grouped to form a higher bandwidth logical link whose rate is approximately the sum of the link rates. This technique provides an effective method of combining the transport bandwidths of multiple links (e.g., DS1/E1 links) grouped to collectively provide higher intermediate rates. This is referred to as an IMA grouping.
Along with AAL0 and AAL5 IMA supports AAL2 which provides bandwidth-efficient transmission of low-rate, short and variable length packets in delay sensitive applications. AAL2 also provides for variable payload within cells and across cells by using segmentation and reassembly technique. AAL type 2 is subdivided into the Common Part Sublayer (CPS) and the Service Specific Convergence Sublayer (SSCS).
GL’s IMA Emulator is available as optional client-server based application with GL’s T1/E1 Analysis hardware. GL also offers ATM analysis application for real-time capture and analysis of ATM IMA cells over T1 E1 lines. Please visit ATM Protocol Analyzer page for more details.
Main Features:
- Performs IMA simulation on up to 16 T1/E1 ports
- ATM links can be created on full or fractional timeslots
- Supports hyper channels with discontinuous (sparse) timeslots
- IMA Frame Length can be set equal to 32, 64, 128, or 256
- Dynamically add/remove (Open/Close) of ATM links without loss in data
- Multiple IMA groups can be created with each group configured with multiple virtual channels for traffic tx/rx.
- Generate and verify end to end traffic on each Virtual Channel
- User configurable ATM (AAL 5, AAL 2) Packet size.
- Payload traffic generation and verification using Sequence number, HDL file (containing packets/frames), Flat Binary file, and User defined frame (ASCII HEX file) for each Virtual Channel independently
- Transmit and receive Ethernet traffic over T1E1 links by operating in bridge mode
- Provides detailed statistics for all IMA groups and each Virtual Channel associated with a group
- Provides end to end traffic verification statistics
- Ideal solution for automated testing using command line scripts
