Dell PowerConnect M6220, Руководство по настройке пользователя

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Monitoring Switch Traffic
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Monitoring Switch Traffic
This chapter describes sFlow features, Remote Monitoring (RMON), and
Port Mirroring features.
The topics covered in this chapter include:
• Traffic Monitoring Overview
• Default Traffic Monitoring Values
• Monitoring Switch Traffic (Web)
• Monitoring Switch Traffic (CLI)
• Traffic Monitoring Configuration Examples
Traffic Monitoring Overview
The switch maintains statistics about network traffic that it handles. It also
has embedded technology that collects and sends information about traffic to
other devices. PowerConnect M6220, M6348, M8024, and M8024-k switches
include support for flow-based monitoring through sFlow and Remote
Network Monitoring (RMON) agents.
What is sFlow Technology?
sFlow is an industry standard technology for monitoring high-speed switched
and routed networks. PowerConnect M6220/M6348/M8024/M8024-k switch
software has a built-in sFlow agent that can monitor network traffic on each
port and generate sFlow data to an sFlow receiver (also known as a collector).
sFlow helps to provide visibility into network activity, which enables effective
management and control of network resources. sFlow is an alternative to the
NetFlow network protocol, which was developed by Cisco Systems. The
switch supports sFlow version 5.
As illustrated in Figure 15-1, the sFlow monitoring system consists of sFlow
Agents (such as PowerConnect M6220, M6348, M8024, and M8024-k
switches) and a central sFlow receiver. sFlow Agents use sampling technology
to capture traffic statistics from monitored devices. sFlow datagrams forward