Mirroring a port for traffic capture

Mirroring a port for traffic capture

In order to analyse the traffic coming from and going to a specific device, you might have to mirror the port it is plugged into.

To do so, connect to the switches CLI using Putty or any SSH client software.
Enter username and password ( default :  username=admin , no password )

then :
  1. # configure terminal
  2. (config)# monitor source interface GigabitEthernet 1/<source port number> both
  3. (config)# monitor destination interface GigabitEthernet 1/<destination port number>

Once you are done with monitoring, to deactivate the port mirroring :

  1. (config)# no monitor destination
  2. (config)# no monitor source interface GigabitEthernet 1/<source port number>
  3. (config)# exit

You can reboot the switch to discard the mirroring configuration as well.

    • Related Articles

    • LumiNode LED indicators

      There are various LEDs on the LumiNode. Here is a list of the LEDs, the possible colours, and the meaning of each colour: DMX Port Status Meaning DMX Input Green Blinking: Active input DMX only (output mode) Cyan Blinking: DMX activity DMX + RDM ...
    • GigaCore RJ45 serial Connection on the console port

      RJ45 serial pinout: Pin 4,5: GND Pin 3: RX (Data going to the GigaCore) Pin 6: TX (Data out of the GigaCore) Signal levels are RS232! Serial connection settings: Speed: 115200 Data bits: 8 Stop bits: 1 Parity: None Flow Control: None
    • GigaCore as AVB Grandmaster

      Change priorities with CLI. *************************************************************************************** The use of the CLI is, as always, at your own risk. Access the CLI with an SSH client like Putty or Moba Xterm Default Login : admin ...
    • GigaCore switches Fiber Optic cabling

      This document will describe how to connect all your network devices via fiber optic and what to look out for on hardware level. SFP Technical Info In order to connect all the fiber links in the correct order we need to know which side of the SFP ...
    • HTTP Commands for EthDMX

      Recall a profile : Change the parts in red to match your situation : http://<IP_ADDRESS_OF_THE_NODE>/cgi-bin/toolbox_profile.cgi?profile=<PROFILE_NUMBER>&recall_profile_nonet=No+network+settings This will not recall the network settings. ...