Port Mirroring

Port mirroring, which is also known as port monitoring, selects network traffic that you can analyze with a network analyzer, such as a SwitchProbe device or other Remote Monitoring (RMON) probe.

monitor session

This command configures a probe port and a monitored port for monitor session (port monitoring) ratio of atleast 1:5. Use the source interface <unit/slot/port> parameter to specify the interface to monitor. Use rx to monitor only ingress packets, or use tx to monitor only egress packets. If you do not specify an {rx | tx} option, the destination port monitors both ingress and egress packets. Use the destination interface <unit/slot/port> to specify the interface to receive the monitored traffic. Use the mode parameter to enabled the administrative mode of the session. If enabled, the probe port monitors all the traffic received and transmitted on the physical monitored port.

• Format: monitor session <session-id> {source interface <unit/slot/port> [{rx | tx}] | destination interface <unit/slot/port> | mode}
• Mode: Global Config

no monitor session

Use this command without optional parameters to remove the monitor session (port monitoring) designation from the source probe port, the destination monitored port and all VLANs. Once the port is removed from the VLAN, you must manually add the port to any desired VLANs. Use the source interface <unit/slot/port> parameter or destination interface <unit/slot/port> to remove the specified interface from the port monitoring session. Use the mode parameter to disable the administrative mode of the session.

NOTE: Since the current version of VME64x Switching Card software only supports one session, if you do not supply optional parameters, the behavior of this command is similar to the behavior of the no monitor command.

• Format: no monitor session <session-id> [{source interface <unit/slot/port> | destination interface <unit/slot/port> | mode}]
• Mode: Global Config

no monitor

This command removes all the source ports and a destination port for the and restores the default value for mirroring session mode for all the configured sessions.

NOTE: This is a stand-alone "no" command. This command does not have a "normal" form.

• Default: enabled
• Format: no monitor
• Mode: Global Config

show monitor session

This command displays the Port monitoring information for a particular mirroring session.

NOTE: The <session-id> parameter is an integer value used to identify the session. In the current version of the software, the <session-id> parameter is always one (1).

• Format: show monitor session <session-id>
• Mode: Privileged EXEC

The display parameters for above command are:

• Session ID: An integer value used to identify the session. Its value can be anything between 1 and the maximum number of mirroring sessions allowed on the platform.
• Monitor Session Mode: Indicates whether the Port Mirroring feature is enabled or disabled for the session identified with <session-id>. The possible values are Enabled and Disabled.
• Probe Port: Probe port (destination port) for the session identified with <session-id>. If probe port is not set then this field is blank.
• Source Port: The port, which is configured as mirrored port (source port) for the session identified with <session-id>. If no source port is configured for the session then this field is blank.
• Type: Direction in which source port configured for port mirroring.Types are tx for transmitted packets and rx for receiving packets.