NetStream Flows

NetStream provides packet statistics based on flows and supports statistics about IP packets (including UDP, TCP, and ICMP packets).

• For IPv4 packets, IPv4 NetStream defines a flow based on the:
  • Destination IP address
  • Source IP address
  • Destination port number
  • Source port number
  • Protocol number
  • ToS
  • Inbound or outbound interface
  Packets with the same information for all seven parameters (known as 7–tuple information) are marked as one flow.
• For IPv6 packets, IPv6 NetStream defines a flow based on the:
  • Destination IP address
  • Source IP address
  • Destination port number
  • Source port number
  • Protocol number
  • Traffic class
  • Flow label
  • Inbound or outbound interface
  Packets with the same information for all eight parameters (known as 8–tuple information) are marked as one flow.