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Port Mirroring is a method used to monitor network traffic. With Port Mirroring, copies of incoming and outgoing packets at certain ports (Source Interface) of a network device are forwarded to another port (Target Port) where the packets are studied. This is used as a diagnostic tool by the network administrator.
This article explains how to mirror ports and VLAN on the ESW2-350G Switches.
Step 1. Log in to the web configuration utility and choose Administration > Diagnostic > Port and VLAN Mirroring. The Port and VLAN Mirroring page opens:
Step 2. Check the Destination Port check box to enable the filter. This option allows you to filter the Port and VLAN Mirroring Table based on the destination port manually.
Step 3. Choose the destination port from the Destination Port drop-down list to use to filter the table.
Step 4. Click Go.
Step 5. Click Add to add a new port or VLAN mirror. The Add Port and VLAN Mirroring page opens:
Step 6. Choose the destination port from the Destination Port drop-down list. This is the port to which packet copies are sent. If a port is identified as an analyzer destination port, it remains the analyzer destination port until all entries are removed.
Step 7. Click the radio button for the desired source interface type and choose an interface from the drop-down list. The available options are:
• Port — Choose the desired source port from the Port drop-down list.
• VLAN — Choose the desired VLAN to monitor from the VLAN drop-down list. A VLAN helps a group of hosts to communicate as if they are on the physical network, regardless of their location.
Note: The Source Interface port cannot be the same as the Destination Port.
Step 8. If Port is clicked in Step 3, click the desired Type radio button for the type of traffic to monitor. The available options are:
• Tx — This option allows port mirroring on outgoing packets.
• Rx — This option allows port mirroring on incoming packets.
• Tx and Rx — This option allows port mirroring on incoming and outgoing packets.
Step 9. Click Apply.
Step 10. (Optional) To delete an entry, check the appropriate check box of the entry and click Delete.
Step 11. (Optional) To edit an entry, check the appropriate check box of the entry and click Edit. Repeat Steps 6 to 9.