HP Cisco MDS 9120 Cisco MDS 9000 Family Fabric Manager Configuration Guide - R - Page 1250

Configuring SPAN Chapter 60 Monitoring Network Traffic Using SPAN Send documentation comments to [email protected] • The SD port does not have a port VSAN. • SD ports cannot be configured using Storage Services Modules (SSMs). • The port mode cannot be changed if it is being used for a SPAN session. Note If you need to change an SD port mode to another port mode, first remove the SD port from all sessions and then change the port mode. Guidelines to Configure SPAN The following guidelines apply for SPAN configurations: • You can configure up to 16 SPAN sessions with multiple ingress (Rx) sources. • You can configure a maximum of three SPAN sessions with one egress (Tx) port. • In a 32-port switching module, you must configure the same session in all four ports in one port group (unit). If you wish, you can also configure only two or three ports in this unit (see the "Generation 1 Interfaces Configuration Guidelines" section on page 20-2). • SPAN frames are dropped if the sum of the bandwidth of the sources exceeds the speed of the destination port. • Frames dropped by a source port are not spanned. Configuring SPAN To monitor network traffic using SD ports, follow these steps: Step 1 Step 2 Step 3 Configure the SD port. Attach the SD port to a specific SPAN session. Monitor network traffic by adding source interfaces to the session. Configuring SPAN To configure an SD port for SPAN monitoring using Device Manager, follow these steps: Step 1 Step 2 Step 3 Step 4 Right-click the port you want to configure and select Configure. You see the general port configuration dialog. Under Mode, choose SD. Click Apply to accept the change. Close the dialog box. 60-6 Cisco MDS 9000 Family Fabric Manager Configuration Guide OL-17256-03, Cisco MDS NX-OS Release 4.x