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VoIP, Wireless TDM Supplier GL Intros ML-PPP Tool

TMCnews Featured Article


April 08, 2009

VoIP, Wireless TDM Supplier GL Intros ML-PPP Tool

By Jai C.S., TMCnet Contributor


GL Communications Inc., a supplier of test, monitoring, and analysis equipment for TDM, Wireless, IP and VoIP networks, reportedly has launched its so-called “ML-PPP & PPP Emulation & Analysis” software, a tool that emulates and analyzes Point-to-Point and Multi-Link Point-to-Point protocols.

 
“MLPPP bundles multiple link-layer channels into a single network-layer channel. Data sent through this channel is distributed among all the links. GL’s flexible and versatile MC-MLPPP Emulator is both GUI and script based. The software is capable of generating and receiving MC-MLPPP and PPP traffic (with or without impairments),” said Karthik Ramalingam, a senior manager at GL.
 
Ramalingam mentioned that the Multi-Class Extension to Multi-Link PPP allows a sender to fragment the packets of various priorities into multiple classes of fragments, and allows high-priority packets to be sent between fragments of lower priorities.
 
Company officials also said that the traffic source can be a sequence number, HDL file (containing packets/frames), flat binary file, user-defined frames (ASCII HEX file) or Ethernet data.
 
According to Ramalingam, MC-MLPPP emulator can now be configured as a router or as a Bridge to establish connections and route traffic between LANs. The software runs on GL’s T1 E1 Analyzer platforms which are available as HD PCI cards as well as portable USB based units.
 
Established in 1986, GL Communications’ (News - Alert) test platforms is claimed to provide visualization, capture, storage, and convenient features like portability, “remotability” and scripting. The company’s TDM Analysis and Emulation line of products includes T1, E1, T3, E3, OC-3, STM-1, analog four-wire, and analog two-wire interface cards, external portable pods, and complete system solutions.
 
The products can perform voiceband traffic analysis and emulation across all traffic types (voice, digits, tones, fax, modem), all protocols (ISDN, SS7, GR-303, Frame Relay, HDLC, V5.X, ATM, GSM, GPRS, etc.), and with capacities up to thousands of channels.
 
The MC-MLPPP using Client-Server GL’s MC-MLPPP Emulator allows traffic generation and verification over PPP links using industry standard Client-Server technology, which may be accessed through a GUI for manual testing or through command line scripts for automation.
 
Also, the Emulator is said to respond to all ARP requests whose IP addresses present in routing table The emulator reportedly allows mapping of user defined class of service into MLPPP class/PPP Link based on length, source IP address, destination IP address and Type Of Service of the received IP packets, set in priority dialog table.
 
When configured to act as bridge between two networks, the Emulator sees that all ARP and traffic (checked against the priority table) received from the network is encapsulated as BPDU (Bridging Protocol Data Unit) and streamed over T1 E1 links. The Emulator on another network removes BPDU header, either converts to Ethernet traffic or adds Ethernet header and streams to the destination.
 

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Jai C.S. is a contributing editor for TMCnet. To read more of Jai's articles, please visit his columnist page.

Edited by Michael Dinan







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