Traffic Shaping and Policing

Traffic Shaping

• Bandwidth can be preserved by limiting application throughput
• Many applications will consume all network resources
• Identify mission-critical traffic
  • Expedite
• Identify wasteful applications
  • Throttle
  • Drop

Random Early Discard / Random Early Detect

• TCP is aggressive during transfer operations
• Link Saturation can be simulated pre-emptively
  • Global TCP synchronization
  • Avoid by dropping specific patterns pre-emptively
• A packet of a flow is dropped
• TCP session management slows the rate of transfer
• Packets from various lows are dropped to maintain an efficient level of utilization

Weighted RED (WRE)

• Traffic classes can be used as a qualification
• In times of congestion, lower quality content is dropped first
• Tiered levels can be implemented for maximum customization

Traffic Policing

• Limiting traffic to a specific rate
• Highly customizable, per user, per application
• Policies can vary based on day of week
• Bursting may be permissible