The Monitor Session [Session Number] Source [Interface] Cisco command

The 'monitor session [session_number] source [interface]' command in Cisco networking allows network administrators to monitor the traffic of a specific session originating from a specified interface.


monitor session [session_number] source [interface] [monitor-options]



To use the 'monitor session [session_number] source [interface]' command, follow these steps:

  1. Enter the 'configure terminal' command to enter configuration mode.
  2. Use the 'monitor session [session_number] source [interface]' command to start monitoring the traffic of the specified session.
  3. (Optional) Use the 'monitor-options' parameters to customize the monitoring process.
  4. Press Enter to save the configuration.


The 'monitor session [session_number] source [interface]' command provides several benefits, including:


The 'monitor session [session_number] source [interface]' command is supported on a wide range of Cisco networking devices, including routers, switches, and firewalls. The exact compatibility of the command will depend on the specific model and software version of the device.

monitor session [session_number] source [interface] Usage Examples


monitor session [session_number] source [interface]


  1. Monitor session 1 source GigabitEthernet0/1: This command monitors session 1 and displays the source interface as GigabitEthernet0/1.

  2. Monitor session 2 source Vlan10: This command monitors session 2 and displays the source interface as VLAN 10.

  3. Monitor session 3 source Loopback0: This command monitors session 3 and displays the source interface as Loopback0.

  4. Monitor session 4 source Tunnel1: This command monitors session 4 and displays the source interface as Tunnel1.

  5. Monitor session 5 source Serial0/0/0: This command monitors session 5 and displays the source interface as Serial0/0/0.