D-Link DWS-4026 Product Manual - Page 120

D-Link Unified Access System Software User Manual 12/10/09 CONFIGURING SFLOW sFlow® is the standard for monitoring high-speed switched and routed networks. sFlow technology is built into network equipment and gives complete visibility into network activity, enabling effective management and control of network resources. The sFlow monitoring system consists of an sFlow Agent (embedded in a switch or router or in a standalone probe) and a central sFlow Collector. The sFlow Agent uses sampling technology to capture traffic statistics from the device it is monitoring. sFlow datagrams are used to immediately forward the sampled traffic statistics to an sFlow Collector for analysis. The sFlow Agent uses two forms of sampling: statistical packet-based sampling of switched or routed Packet Flows, and time-based sampling of counters. SFLOW AGENT SUMMARY Packet Flow Sampling and Counter Sampling are performed by sFlow Instances associated with individual Data Sources within the sFlow Agent. Packet Flow Sampling and Counter Sampling are designed as part of an integrated system. Both types of samples are combined in sFlow datagrams. Packet Flow Sampling will cause a steady, but random, stream of sFlow datagrams to be sent to the sFlow Collector. Counter samples may be taken opportunistically in order to fill these datagrams. In order to perform Packet Flow Sampling, an sFlow Sampler Instance is configured with a Sampling Rate. The Packet Flow sampling process results in the generation of Packet Flow Records. In order to perform Counter Sampling, the sFlow Poller Instance is configured with a Polling Interval, The Counter Sampling process results in the generation of Counter Records. The sFlow Agent collects Counter Records and Packet Flow Records and sends them in the form of sFlow datagrams to sFlow Collectors. To access the sFlow Agent Summary page, click LAN > Monitoring > sFlow > Agent Summary in the navigation tree. Figure 60: sFlow Agent Summary Table 50: sFlow Agent Summary Field Description Version Uniquely identifies the version and implementation of this MIB. The version string must have the following structure: MIB Version;Organization;Software Revision where: • MIB Version: '1.3', the version of this MIB. • Organization: D-Link Corporation • Revision: 1.0 Agent Address The IP address associated with this agent. Page 120 Configuring sFlow Document 34CSFP6XXUWS-SWUM100-D7