Dell PowerConnect 7048P User Manual - Page 395

• Specify the network management system IP address or permit management access from all IP addresses. For more information about configuring SNMP, see "Configuring SNMP" on page 313. The RMON agent in the switch supports the following groups: • Group 1-Statistics. Contains cumulative traffic and error statistics. • Group 2-History. Generates reports from periodic traffic sampling that are useful for analyzing trends. • Group 3 -Alarm. Enables the definition and setting of thresholds for various counters. Thresholds can be passed in either a rising or falling direction on existing MIB objects, primarily those in the Statistics group. An alarm is triggered when a threshold is crossed and the alarm is passed to the Event group. The Alarm requires the Event Group. • Group 9 -Event. Controls the actions that are taken when an event occurs. RMON events occur when: - A threshold (alarm) is exceeded - There is a match on certain filters. NOTE: The switch supports RMON1. What is Port Mirroring? Port mirroring is used to monitor the network traffic that a port sends and receives. The Port Mirroring feature creates a copy of the traffic that the source port handles and sends it to a destination port. The source port is the port that is being monitored. The destination port is monitoring the source port. The destination port is where you would connect a network protocol analyzer to learn more about the traffic that is handled by the source port. A port monitoring session includes one or more source ports that mirror traffic to a single destination port. The PowerConnect 7000 Series switches support a single port monitoring session. LAGs (port channels) cannot be used as the source or destination ports. For each source port, you can specify whether to mirror ingress traffic (traffic the port receives, or rx), egress traffic (traffic the port sends, or tx), or both ingress and egress traffic. Monitoring Switch Traffic 395