Dell PowerConnect 6248 User's Guide - Page 330

Configuring Traffic Mirroring Traffic mirroring allows the user to configure the switch to send copies of packets on a port that is being mirrored to the mirroring port. The mirroring can be port-based or flow-based. Use the Traffic Mirroring menu page to define port mirroring sessions and configure flow-based mirroring. To display this page, click Switching →Traffic Mirroring in the tree view. The Traffic Mirroring menu page contains links to the following features: • Port Mirroring • Flow Based Mirroring Port Mirroring Port mirroring selects the network traffic for analysis by a network analyzer. This is done for specific ports of the switch. As such, many switch ports are configured as source ports and one switch port is configured as a destination port. You have the ability to configure how traffic is mirrored on a source port. Packets that are received on the source port, that are transmitted on a port, or are both received and transmitted, can be mirrored to the destination port. The packet that is copied to the destination port is in the same format as the original packet on the wire. This means that if the mirror is copying a received packet, the copied packet is VLAN tagged or untagged as it was received on the source port. If the mirror is copying a transmitted packet, the copied packet is VLAN tagged or untagged as it is being transmitted on the source port. To display the Port Mirroring page, click Switching →Traffic Mirroring →Port Mirroring in the tree view. Figure 7-29. Port Mirroring 330 Configuring Switching Information