Network Emulation Specifications

The following impairments and constraints can be configured in the flow of an Advanced Test.

WAN Specifications

Latency
Fixed Latency 0-8,000 ms (Granularity = 1 ms)
Uniform Distributed Latency (minimum/maximum): 0-8,000 ms (Granularity = 1 ms)
Latency change limit 0-4,000 ms (Granularity = 1 ms)
Normal Distributed Latency:
Average 0-8,000 ms (Granularity = 1 ms)
Standard Deviation 0-8,000 ms (Granularity = 1 ms)
Linear Latency (minimum/maximum): 0-8,000 ms (Granularity = 1 ms)
Cycle Duration 1-65,535 sec
Packet Loss
Periodic Loss - Lose every nth packet n=2-65,535
Random Loss 0-10% (Granularity = 0.01%)
Burst Loss:
Probability 0.01-90% (Granularity = 0.01%)
Burst Size 1-65,534 packets
Gilbert-Elliot Loss Two State Loss Model:
Loss Probability 0.0-100% (Granularity = 0.01%)
Transition to Other State 0.0-99.99% (Granularity = 0.01%)
Packet Effects
Out Of Order:
Probability 1-50%
Offset 1-64 packets
Packet Duplication:
Probability 1-99%
Number of duplicates 1-20 packets
Fragmentation:
Probability 1-99%
MTU 64-1,460 bytes
DF Policy
  • Ignore DF and fragment packet.
  • Discard packet and generate ICMP message.
  • Discard packet and do not send a message.
Link Faults
Bit Error:
Frequency 1/102 – 1/1012 bits
Number of Toggled Bits 1-500 bits
Disconnection:
Average Frequency 3-300 sec
Disconnection Time 10-30,000 ms
Congestion:
Frequency 1-300 sec
Time span 10-65,535 ms
Event Properties:
Fixed Latency 0-8000 ms
Packet Loss Probability 0%-90% (Granularity = 0.01%)

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Gateway Specifications

Bandwidth Settings  
Symmetric Bandwidth 1-10 GB
Asymmetric Bandwidth:
Uplink/Downlink 1-10 GB
Packet Overhead Length 0-1000 bytes
Queue Limitations
Queue Size 2-65,535 KB
Drop Mode: Drop Tail or RED
RED Queue (Minimum/Maximum Threshold) 2-65,535 KB
Fill Mode (Queue Size Policy) Byte Mode or Packet Mode
Packet Overhead
  • Ethernet (Add 18 bytes to each packet)
  • PPP (Add 9 bytes to each packet)
Traffic Type Support IPv4

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