RUGGEDCOM ROX II
CLI User Guide
Chapter 16
Traffic Control and Classification
Flow Records
719
5
4
1
6
2
3
Figure 41: NetFlow
1.
NetFlow Exporter (RUGGEDCOM ROX II)
2.
WAN
3.
LAN
4.
NetFlow Collector
5.
Flow Storage
6.
Analysis Console
NOTE
RUGGEDCOM ROX II supports NetFlow version 5.
CONTENTS
•
Section 16.4.1.1, “Flow Records”
Section 16.4.1.1
Flow Records
A flow record, as defined by the Cisco standard, is a unidirectional sequence of packets that share the same:
• Ingress interface
• Source and destination IP address
• IP protocol
• Source and destination port for TCP and UDP
• Type of Service (ToS)
Each flow record is exported using the User Datagram Protocol (UDP), which requires each packet to include the IP
address of the target NetFlow collector and its designated UDP port.
A flow record is considered ready to export when either of the following conditions are met:
• The flow has been inactive (e.g. no new packets) for a specific period of time
• The flow has been active for longer than allowed by the configuration
• A TCP flag indicates the flow has been terminated
RUGGEDCOM ROX II includes user-configurable timers for inactive and active flows.
NOTE
RUGGEDCOM ROX II does not retain a record of flows sent. Therefore, any NetFlow packets dropped
due to congestion or packet corruption will be lost permanently.
Содержание RUGGEDCOM ROX II
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Страница 4: ...RUGGEDCOM ROX II CLI User Guide iv ...
Страница 39: ...RUGGEDCOM ROX II CLI User Guide Table of Contents xxxix 19 5 VLANs 752 ...
Страница 40: ...Table of Contents RUGGEDCOM ROX II CLI User Guide xl ...
Страница 46: ...Preface RUGGEDCOM ROX II CLI User Guide xlvi Customer Support ...
Страница 96: ...Chapter 2 Using RUGGEDCOM ROX II RUGGEDCOM ROX II CLI User Guide 50 Accessing Maintenance Mode ...
Страница 170: ...Chapter 5 System Administration RUGGEDCOM ROX II CLI User Guide 124 Deleting a Scheduled Job ...
Страница 256: ...Chapter 6 Security RUGGEDCOM ROX II CLI User Guide 210 Enabling Disabling a Firewall ...
Страница 402: ...Chapter 11 Wireless RUGGEDCOM ROX II CLI User Guide 356 Managing Cellular Modem Profiles ...
Страница 646: ...Chapter 13 Unicast and Multicast Routing RUGGEDCOM ROX II CLI User Guide 600 Deleting a Multicast Group Prefix ...
Страница 732: ...Chapter 15 Network Discovery and Management RUGGEDCOM ROX II CLI User Guide 686 Viewing NETCONF Statistics ...
Страница 790: ...Chapter 17 Time Services RUGGEDCOM ROX II CLI User Guide 744 Deleting a Broadcast Multicast Address ...