document number pxe200-3.10.10-08 1 packetexpert™ - iplinksim wan link emulator (pxe200)

Document Number PXE200-3.10.10-08

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PacketExpert™ - IPLinkSim

WAN Link Emulator (PXE200)


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IP WAN Link Emulator


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Features• Easy-to-use portable hardware based WAN Link Emulator.

• Configure as a bridge for easy integration with any test configuration.

• Emulates dynamically changing WAN conditions like link outages, variable bandwidths links, route

flapping, satellite rain fade, and wireless interference with high-flexibility.

• Monitor WAN traffic conditions with visual display of the traffic conditions, including throughput

graphs, and link statistics.

• Check the stability or performance of the network with various real world impairments including

Latency, Jitter, Congestion, Packet Loss/Duplication/reordering, Logic error, and FCS error.

• Bandwidth control (10 Kbps up to 1000 Mbps) to emulate various WAN link speeds (Modem, DSL,

T1/E1/T3/E3/OC3/OC12 etc).

• Supports Logic Error and FCS Error insertion within Ethernet packet.

• Introduce bi-directional delay in milliseconds increments.


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Hardware Interfaces

Interfaces2 x 10/100/1000 Base-T Electrical only

2 x 1000 Base-X Optical OR 10/100/1000 Base-T Electrical

Single Mode or Multi Mode Fiber SFP support with LC connector

• Power:– +9 volts, 2.2 Amps

• Protocols:– RFC 2544 compliance

• Bus Interface:– USB 2.0


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Applications Network Validations:

Emulate the links to estimate the bandwidth required for networks

Equipment Testing:

Use IPLinkSim™ to find out if equipments improve the performance

Troubleshooting:

Pinpoint the problems & validate solutions of the network

Application Testing:

Test the working of client/server applications at remote locations

IPLinkSim™


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Applications… Website Performance:

Verify the responsiveness of your website & e-commerce systems.

VoIP:

Verify quality requirements to deploy VoIP in real-world conditions.

Video and IPTV:

Helps to ensure a clear picture.

Product Demonstrations:

Demonstrate on customer sites and trade show avoiding the hassles of actually installing on a production network of installing on a production network and eliminate surprises with a pre-configured test.

IPLinkSim™


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Who uses the IPLinkSim™?

IPLinkSim™ is designed for anyone who needs an accurate, easy-to-use, cost-effective way to simulate WAN IP Link conditions, including:

Corporate IT Managers

Application and equipment developers

Military network developers

Sales and SE professionals

Networking equipment resellers and system integrators

Q/A teams

Test labs


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PacketExpert™ - IPLinkSim


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Features PacketExpert™ - IPLinkSim™

Emulated WAN links (per port pair) PacketExpert™: 1 (bi-directional) per unitHD PacketExpert™: 3, 6 (bi-directional) per unit

Port pairs per unit PacketExpert™: 2HD PacketExpert™: 6, 12

Interface Type 2 x Electrical Interfaces (10 Mbps to 1 Gbps auto-negotiate)2 x SFP (1000Mbps auto-negotiate)

Max. Packet Rate Approx. 1.4 million packets per second in each direction

Bandwidth emulation 10 Kbps up to 1000 Mbps

Latency & Jitter 0 milliseconds to 8 seconds (8000 milliseconds)Constant, uniform, normal distributions

Packet Loss Models Random (% of total packets (0–100%)

Error Rate 10^-1 to 10^-9 (packet error)

FCS Error Rate Error rate 10^-1 to 10^-9

Packet Reordering Probability – 0-100% Delay – 0 milliseconds – 8 seconds

Packet Duplication Duplication range – 0 - 100%

Queue Management N/A (future enhancements)

Background utilization Link Utilization Rate –0 – 100%Burst Size - 0 – 1,000,000 bytes

Jumbo frames Supported (max 2048 bytes only)

Statistics Link and Port Statistics

Throughput graphs 10 seconds to 7 days

Full CLI Supported


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Operation

PacketExpert™ - IPLinkSim™ can be installed between two LAN segments as shown in the diagram.

PacketExpert™ can be configured as a Bridge to forward frames between the connected networks/end points.


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Bypass Emulation

Bridge Mode Configuration

• Emulation Bypass option allows the ARP/Multicast frames to either bypass the emulation (and sent directly to the output port of the link) or to be included as part of the WAN traffic emulated.

ARP/Multicast frames are bypassing emulation


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Link Emulation

• PacketExpert™ IPLinkSim emulates a bi-directional WAN link between the ports 2 and 3. Each direction acts as a separate and independent WAN Link.

• Each link (P2 -> P3) and (P3 -> P2) can be configured independently for all the link emulation characteristics.

IPLinkSim™


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Configuration tabs collapsed

Link Emulation

Configuration tabs expanded


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Bandwidth

Link Emulation

• Emulate various WAN link speeds (Modem, DLS, T1, E1, T3, E3, Oc3/STM1, Oc12/STM4 etc).

• Link rate in units of bps, Kbps, and Mbps.

• Range is from 10 Kbps up to 1000 Mbps


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LatencyLink Emulation

Latency: To simulate propagation delay and jitter due to various links (Satellite, Wireless, Wire etc) and

network elements (Routers, Switches, Firewalls, etc). Delay 0 ms to 8 sec (8000 ms)

Constant: Set a constant delay, in milliseconds.

Uniform: Set a uniform delay within a range of delay values (varies uniformly between the set

minimum and maximum values, in milliseconds).

Normal: Internal algorithm generates normally distributed delays between the minimum and

maximum configured values, in milliseconds.


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Packet Loss

Link Emulation

Packet Loss - are configured to simulate overload network or underperforming network devices.

Packet Loss Rate - Random (% of total packets (0–100%)

For example, if a 1 Mbps link is specified to have a 10% packet loss rate, the maximum

possible average throughput is 900 Kbps.


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Packet Reordering

Link Emulation

Packet Reordering -specifies the probability that each frame is reordered and the amount of time

that reordered frames are delayed from their original position. Emulate packet routing in various

possible paths. This behavior is controlled by two parameters:

Probability - 0 to 100%

Delay – 0 milliseconds to 8 seconds


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Packet Duplication

Link Emulation

• Packet Duplication - specifies the probability that a frame will be duplicated. Emulates

misconfigured routers.

• Packet Duplication - Duplication range – 0 to 100%

• Duplicate frames are then subjected to rate control, delay, loss, and reordering

independently of the original frame.


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Logic Error Insertion

Link Emulation

• Logic Error Insertion - are configured to emulate faulty network devices or interference. This

allows user to introduce errors into the outgoing traffic.

Error Rate - The error rate ranges from 10^-1 to 10^-9

Offset Start – specify the offset bytes from the start of the frame

Offset End - specify the offset bytes from the end of the frame


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FCS Error Insertion

Link Emulation

• FCS Error Insertion - Frame Check Sequence (FCS) is the extra checksum characters added to

a frame for error detection. Normally caused by interference or incompatible device.

FCS Error rate range 10^-1 to 10^-9.


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Background Traffic

Link Emulation

• Background Traffic -Background traffic is specified as a link utilization rate and a burst size.

Emulate competing traffic in the network with traffic under test.

Link Utilization Rate – 0 to 100%;

Burst Size - 0 to 1,000,000 bytes


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Link Statistics

IPLinkSim

• It provides real-time transmission statistics of the traffic over the emulated link (P2-P3)/(P3-P2) for each direction.

• The statistics parameters include Dropped Frames, No. of errored Packets, Dropped Packets, Duplicate Packets, Reordered Packets, and Average Throughput of the link, for varying durations.


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Port Statistics


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Throughput Graph

IPLinkSim

• A real time display of Throughput of the link, plotted as the rate against time, in the form of a line graph. The Graph can be viewed for a single link or both the links together.


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Command Line Interface

• Includes a command line interface (CLI) with a limited feature set.

• Accessed via the CONSOLE interface or through a Telnet connection.

• Provides the following functionalities –

• Configure various link emulation parameters

• Start/Stop emulation task

• Commands to get link and port statistics

IPLinkSim


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Command Line Interface (CLI)

• Supports Console based Command Line Interface (CLI) to access all the functionalities using various commands.

• CLI commands supporting IPLinkSim – WAN IP Link emulation.


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WCS based Client Server

• Utilizes GL’s Windows Client / Server framework

• Client and Server communicate to each other through TCP/IP socket


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Thank YouQuestions / Demo Period

document number pxe200-3.10.10-08 1 packetexpert™ - iplinksim wan link emulator (pxe200)

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