Transcript PacketCheck

PacketExpert™ - IPLinkSim
WAN Link Emulator (PXE200)
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Document Number PXE200-3.10.10-08
IP WAN Link Emulator
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Features
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Easy-to-use portable hardware based WAN Link Emulator.
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Configure as a bridge for easy integration with any test configuration.
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Emulates dynamically changing WAN conditions like link outages, variable bandwidths links, route
flapping, satellite rain fade, and wireless interference with high-flexibility.
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Monitor WAN traffic conditions with visual display of the traffic conditions, including throughput graphs,
and link statistics.
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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.
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Bandwidth control (10 Kbps up to 1000 Mbps) to emulate various WAN link speeds (Modem, DSL,
T1/E1/T3/E3/OC3/OC12 etc).
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Supports Logic Error and FCS Error insertion within Ethernet packet.
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Introduce bi-directional delay in milliseconds increments.
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Hardware Interfaces
Interfaces
2 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
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Protocols:
– RFC 2544 compliance
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Bus Interface:
– USB 2.0
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Power:
– +9 volts, 2.2 Amps
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IPLinkSim™
Applications
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Network Validations:
Emulate the links to estimate the bandwidth required for networks
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Equipment Testing:
Use IPLinkSim™ to find out if equipments improve the performance
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Troubleshooting:
Pinpoint the problems & validate solutions of the network
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Application Testing:
Test the working of client/server applications at remote locations
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IPLinkSim™
Applications…
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Website Performance:
Verify the responsiveness of your website & e-commerce systems.
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VoIP:
Verify quality requirements to deploy VoIP in real-world conditions.
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Video and IPTV:
Helps to ensure a clear picture.
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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.
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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:
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Corporate IT Managers
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Application and equipment developers
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Military network developers
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Sales and SE professionals
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Networking equipment resellers and system integrators
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Q/A teams
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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 unit
HD PacketExpert™: 3, 6 (bi-directional) per unit
Port pairs per unit
PacketExpert™: 2
HD 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
Bandwidth emulation
Approx. 1.4 million packets per second in each direction
10 Kbps up to 1000 Mbps
Latency & Jitter
0 milliseconds to 8 seconds (8000 milliseconds)
Constant, uniform, normal distributions
Packet Loss Models
Error Rate
FCS Error Rate
Random (% of total packets (0–100%)
10^-1 to 10^-9 (packet error)
Error rate 10^-1 to 10^-9
Packet Reordering
Probability – 0-100%
Delay – 0 milliseconds – 8 seconds
Packet Duplication
Queue Management
Duplication range – 0 - 100%
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
Full CLI
10 seconds to 7 days
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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Bridge Mode Configuration
Bypass Emulation
ARP/Multicast frames are bypassing emulation
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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.
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IPLinkSim™
Link Emulation
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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.
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Link Emulation
Configuration tabs collapsed
Configuration tabs expanded
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Link Emulation
Bandwidth
• 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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Link Emulation
Latency
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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Link Emulation
Packet Loss
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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Link Emulation
Packet Reordering
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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Link Emulation
Packet Duplication
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Packet Duplication - specifies the probability that a frame will be duplicated. Emulates
misconfigured routers.
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Packet Duplication - Duplication range – 0 to 100%
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Duplicate frames are then subjected to rate control, delay, loss, and reordering
independently of the original frame.
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Link Emulation
Logic Error Insertion
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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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Link Emulation
FCS Error Insertion
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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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Link Emulation
Background Traffic
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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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IPLinkSim
Link Statistics
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It provides real-time transmission statistics of the traffic over the emulated link (P2-P3)/(P3-P2)
for each direction.
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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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IPLinkSim
Throughput Graph
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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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IPLinkSim
Command Line Interface
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Includes a command line interface (CLI) with a limited feature set.
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Accessed via the CONSOLE interface or through a Telnet connection.
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Provides the following functionalities –
• Configure various link emulation parameters
• Start/Stop emulation task
• Commands to get link and port statistics
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Command Line Interface (CLI)
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Supports Console based Command Line Interface (CLI) to access all the functionalities using various
commands.
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CLI commands supporting IPLinkSim – WAN IP Link emulation.
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WCS based Client Server
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Utilizes GL’s Windows Client / Server
framework
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Client and Server communicate to each
other through TCP/IP socket
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Thank You
Questions / Demo Period
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