Digital Networks North America DNswitch 800 instruction

Using a Port Mirror for Analysis

You can mirror traffic from any source port to a target port for real-time analysis. You can then attach a logic analyzer or RMON probe to the target port and study the traffic crossing the source port in a completely unobtrusive manner. When mirroring port traffic, note that the target port must be configured in the same VLAN and be operating at the same duplex mode as the source port (see VLAN Static List on page 33).

You can use the port mirror configuration screen to designate a single port pair for mirroring as shown below:

	Figure 3-39. Mirror Port Configuration

Parameter	Description
Status	Enables/disables port mirroring.
Mirror Source Port	The port whose traffic will be monitored.
Mirror Target Port	The port that will duplicate or “mirror” all the traffic happening on
	the monitored port.

46 Configuring and Monitoring the Switch

DNswitch 800

Image 56

Digital Networks North America DNswitch 800 manual Using a Port Mirror for Analysis, Mirror Port Configuration

Contents

Digital Networks Page DNswitch Web Management Guide Revision/Update InformationPage FCC Class B Certification USA Safety Compliance Underwriters Laboratories Compliance Statement Page Table of Contents Index System Requirements FeaturesDigital Networks WebView Description Conventions This guide uses the following user input conventions Setting Up Web Management Setting an IP Address Setting Trap Destinations Setting a Default GatewaySetting the Administrator Password Starting and Stopping Digital Networks WebView Enabling Web Management Digital Networks WebView User Interface Areas of the User Interface Areas of the User Interface Using Help Configuration Options Configuring and Monitoring the Switch Screen Hierarchy System Information Parameter Description Switch Information Main Board IP Configuration Parameter Default Description Snmp Configuration Snmp Community Trap Managers Trap Managers Security Configuration Change Password Firmware Upgrade Options Web Upload Management Tftp Download Management Tftp Download Management Configuration Download Management Configuration Save and RestoreConfiguration Upload Management Address Table Configuration 12. Address Table STA Spanning Tree Algorithm Spanning Tree Information Spanning Tree 14. STA Information Ports Spanning Tree Configuration Switch 16. STA Configuration When the Switch Becomes Root STA Port Configuration Enabled Configuring Bridge MIB Extensions Bridge Capability Bridge Settings Gmrp Port Priority Configuration Priority Port Traffic Class Information 21. Port Traffic Class Information Vlan Management Vlan ID Configuring Virtual LANs Vlan Basic Information Vlan Current Table 24. Vlan Current Table Vlan Static List Vlan Static Table 27. Vlan Static Table Port Assignment Vlan Static Membership by Port 28. Vlan Static Membership by Port Vlan Port Configuration Pvid Configuring Igmp Igmp Multicast Filtering Multicast Router Port Information 31. Multicast Router Port Information Static Multicast Router Port Configuration 32. Static Multicast Router Port Configuration Igmp Member Port Table 33. Igmp Member Port Table IP Multicast Registration Table 34. IP Multicast Registration Table Port Menus Port Information Port Configuration Directly to the switch when its buffers fill. Back Port Broadcast Storm Protect Configuration 37. Port Broadcast Storm Protect Configuration Port Security Configuration 38. Port Security Configuration Using a Port Mirror for Analysis 39. Mirror Port Configuration Port Trunk Configuration 40. Port Trunk Configuration Port Statistics Etherlike Statistics Rmon Statistics 42. Rmon Statistics Bits but including FCS octets Configuring and Monitoring the Switch DNswitch System is Disconnected from the Switch TroubleshootingCannot Connect to the Switch How Do I Confirm a Successful Software Download? Frequently Asked QuestionsCan I Open More Than One Window for Same Switch? Index Vlan Page WM-DSA8G-00