3Com 3500 manual

758CHAPTER 24: ROVING ANALYSIS

	analyzer add Defines a bridge port to serve as a dedicated analyzer port.
✓ 3500	Valid Minimum Abbreviation
✓ 9000	an a
✓ 9400	Important Considerations

✓3900

✓9300

■On CoreBuilder® 3500 and CoreBuilder 9000 systems, you can connect as many as 16 network analyzers to a system. On other platforms, you can connect one network analyzer. For more accurate analysis, attach the analyzer to a dedicated port instead of through a repeater.

■After a port is selected to serve as an analyzer port, it cannot receive or transmit any other data. Instead, it receives only the data from the ports to be monitored. If you have enabled the Spanning Tree Protocol (STP) on the port, STP is automatically disabled.

■If the physical port configuration changes in the system (that is, if you remove or rearrange modules), the MAC address of the analyzer port remains fixed. If you replace the module with the analyzer port with a module of a different media type, the roving analysis port (RAP) configuration for that port is cleared.

■When you configure a port that is part of a virtual LAN (VLAN) as an analyzer port, a warning is displayed because adding the port removes the port from all VLANs. When the port is restored (when you remove the analyzer port), it becomes a member of the default VLAN.

■If the probe is attached to a 10 Mbps Ethernet analyzer port and the roving analysis port (RAP) is monitoring a 100 Mbps Ethernet port with a sustained traffic rate greater than 10 Mbps, the analyzer may not see all of the frames.

■After you enter a bridge port number, the system displays the MAC address of the analyzer port. Record this information for setting up the port that you want to monitor.

■On the CoreBuilder 9000, the port to which the analyzer is attached and the port you wish to monitor must be on the same blade.

■Trunked ports and resilient link ports can not be configured as analyzer ports.