HP 6125XLG R2306-HP 6125XLG Blade Switch Network Management and Monitoring Con - Page 102

Configuring sFlow, Protocols and standards, sFlow configuration task list

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Configuring sFlow Sampled Flow (sFlow) is a traffic monitoring technology. As shown in Figure 31, the sFlow system involves an sFlow agent embedded in a device and a remote sFlow collector. The sFlow agent collects interface counter information and packet information and encapsulates the sampled information in sFlow packets. When the sFlow packet buffer is full, or the aging timer (fixed to 1 second) of sFlow packets expires, the sFlow agent sends the sFlow packets in UDP datagrams to the specified sFlow collector. The sFlow collector analyzes the information and displays the results. sFlow provides the following sampling mechanisms: • Flow sampling-Obtains packet information. • Counter sampling-Obtains interface counter information. Figure 31 sFlow system As a traffic monitoring technology, sFlow has the following advantages: • Supports traffic monitoring on Gigabit and higher-speed networks. • Provides good scalability to allow one sFlow collector to monitor multiple sFlow agents. • Saves money by embedding the sFlow agent in a device, instead of using a dedicated sFlow agent device. Protocols and standards • RFC 3176, InMon Corporation's sFlow: A Method for Monitoring Traffic in Switched and Routed Networks • sFlow.org, sFlow Version 5 sFlow configuration task list Tasks at a glance (Required.) Configuring the sFlow agent and sFlow collector information 96

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96
Configuring sFlow
Sampled Flow (sFlow) is a traffic monitoring technology.
As shown in
Figure 31
, the sFlow system involves an sFlow agent embedded in a device and a remote
sFlow collector. The sFlow agent collects interface counter information and packet information and
encapsulates the sampled information in sFlow packets. When the sFlow packet buffer is full, or the
aging timer (fixed to 1 second) of sFlow packets expires, the sFlow agent sends the sFlow packets in UDP
datagrams to the specified sFlow collector. The sFlow collector analyzes the information and displays the
results.
sFlow provides the following sampling mechanisms:
•
Flow sampling
—Obtains packet information.
•
Counter sampling
—Obtains interface counter information.
Figure 31
sFlow system
As a traffic monitoring technology, sFlow has the following advantages:
•
Supports traffic monitoring on Gigabit and higher-speed networks.
•
Provides good scalability to allow one sFlow collector to monitor multiple sFlow agents.
•
Saves money by embedding the sFlow agent in a device, instead of using a dedicated sFlow agent
device.
Protocols and standards
•
RFC 3176,
InMon Corporation's sFlow: A Method for Monitoring Traffic in Switched and Routed
Networks
•
sFlow.org,
sFlow Version 5
sFlow configuration task list
Tasks at a glance
(Required.)
Configuring the sFlow agent and sFlow collector information