Dell PowerConnect 6248 User's Guide - Page 271

• Trap Log Capacity - The maximum number of traps stored in the log. If the number of traps exceeds the capacity, the entries will overwrite the oldest entries. • Number of Traps Since Log Last Viewed - The number of traps that have occurred since the traps were last displayed. Displaying the traps by any method (terminal interface display, Web display etc.) will cause this counter to be cleared to 0. • Log - The sequence number of this trap. • System Up Time - The time at which this trap occurred, expressed in days, hours, minutes and seconds since the last reboot of the switch. • Trap - Information associated with the trap. View the Trap Log Using CLI Commands For information about the CLI commands that perform this function, see the Syslog Commands chapter in the CLI Reference Guide. The following table shows the equivalent CLI command you use to show trap logs. Table 6-62. Trap Log Commands CLI Command show logging Description Displays the state of logging and the syslog messages stored in the internal buffer. 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. Advantages of using sFlow include the following: • It is possible to monitor all ports of the switch continuously with no impact on the distributed switching performance. • Very little memory/CPU is required. Samples are not aggregated into a flow-table on the switch; they are forwarded immediately over the network to the sFlow collector. • The system is tolerant to packet loss in the network (statistical model means loss is equivalent to slight change in sampling rate). Configuring System Information 271