Fiber Optic Network Tapping and Monitoring

Using LightSpeed1000™

The LightSpeed1000™ Record Playback module permits

• wirespeed packet capture and transmit over up to 2 unchannelized optical interfaces (up to 1 Gbps) 
• continuous simultaneous capture and playback over multiple ports on multiple devices is possible.
• A detail protocol analysis can be performed on the packets captured using the Protocol Analyzers in LightSpeed1000™

Playback from File Application

The application permits transmission of PoS packets, ATM cells or RAW Data over SONET interface using a file (Hardware Packet Captured File –GL’s file format) and displays the total number of transmitted packet, cells or raw data blocks.

• Transmits packets / cells from the file at user-defined bandwidth
• Packets can be transmitted either continuously, limited by number of packets/cells, or till the end of file (EOF)
• Transmit packets/cells at a user configurable rate
• Transmits on the same port as captured, swaps ports or uses a specified port
• Provides the statistics of the transmitted cells at both line level and payload level
  
  

Record to File Application

Provides continuous or limited capture of HDLC packets, ATM cells or RAW payload data on the SONET interface to file in Sonet Capture Format (SCF).

• The capture can either run continuously or be limited to a specified file size (MB), number of packets, or specified time duration.
• Synchronous Multi-Board option - Allows to capture incoming packets synchronously on multiple boards
• Complex and Flexible Hardware Based Filtering Options  - Sixteen 128 bit independent filters with bit masks, for both ports with AND/OR include/exclude conditions
• Hardware filters can be applied to incoming data on each individual port to allow traffic of interest only. ATM and PoS traffic can be filtered at hardware level to target traffic of interest only. 
• Allows to capture all payload from SONET/SDH transparent of transport level.

Using PacketExpert™

GL’s PacketExpert™-Record Playback module is designed for High-Precision Wirespeed Packet Forwarding and Wirespeed Packet Capture, Filter, Drop (for real-time analysis) & Storage (for offline analysis) over optical or electrical interfaces.

• Simultaneously Capture, Filter, and Record on up to 2 optical ports and 3 electrical ports (up to 1 Gbps) per device
• Continuously Playback packets  using pre-recorded files simultaneously up to 2 optical ports and 3 electrical ports per device
• Onboard 2 GB memory - Record and Playback utilises 1 GB each of the 2 GB on board memory available as a temporary buffer. Utilizing the onboard 2 GB memory and the WireSpeed filter, users can capture useful amounts of data at wire speed (up to 1 Gbps), which can be used for later analysis.

Playback from File Application – High-precision Wirespeed Ethernet Packet Forwarding from a Captured File

This application permits regenerating the traffic from a pre-recorded file i.e. traffic is transmitted at the precise rate at which it was captured. Most important feature of the playback application is that the traffic can be played back exactly the same way as it was captured. During playback, the relative timestamps for each packet transmitted is maintained exactly the way in the source file, maintaining a nanosecond accuracy in the timestamps.

• Supports limited lossless capture and continuous capture modes.
• The transmission can be either continuous or limited to a specified number of packets or be set to play the file till the end-of-file.
• Supports popular capture file formats such as PCAP/NGPCAP (Wireshark® formats), and HDL (.hdl - GL Proprietary and can be used for offline analysis by GL’s PacketScan™)  for playback that gives the user flexibility in recreating live network conditions – traffic captured on a live network (using either PacketScan™ or Wireshark®) can be easily recreated in the lab.

Record to File Application

• Continuous or limited capture of Ethernet packets on up to 2 optical ports and 3 electrical ports (up to 1 Gbps) per device
• The captured packets are transferred to the host via the USB 2.0 interface at run time and stored on the host PC’s hard disk.
• The capture can either run continuously or be limited to a specified file size (MB), number of packets, or specified time duration.

• Wirespeed Packet Filters and Triggers - powerful “Wirespeed filter” allows user to filter out unwanted traffic, and continuously capture the traffic of interest. The limitation being only the hard disk size and the disk write speed.

  • Record Only - Sixteen 40 byte independent filters with bit masks, with AND/OR include/exclude conditions
  • Record and Playback -  Sixteen 16 byte independent filters with bit masks, with AND/OR include/exclude conditions