How to configure Port Mirroring on Reyee NBS series Switch?

Overview

The switched port analyzer (SPAN) function is a function that copies packets of a specified port to another port that is connected to a network monitoring device, After port mirroring is set, the packets on the source port will be copied and forwarded to the destination port, and a packet analyzer is usually connected to the destination port to analyze the packet status of the source port, so as to monitor all incoming and outgoing packets on source ports.

As shown, by configuring port mirroring on Device A, the device copies the packets on Port 1 to Port 10. Although the network analysis device connected to Port 10 is not directly connected to Port 1, it can receive packets through Port 1. Therefore, the aim of monitoring the data flow transmitted by Port 1 is realized.

Topology

The SPAN function not only realizes the data traffic analysis of suspicious network nodes or device ports, but also does not affect the data forwarding of the monitored device. It is mainly used in network monitoring and troubleshooting scenarios.

Procedure

Choose Local Device > Ports > Port Mirroring.

Click Edit, select the source port, destination port, monitor direction, and whether to receive packets from non-source ports, and click OK. A maximum of four SPAN entries can be configured.

To delete the port mirroring configuration, click Delete in the corresponding Action column.

Caution

You can select multiple source traffic monitoringports but only one destination port. Moreover, the source traffic monitoringports cannot contain the destination port.

An aggregate port cannot be used as the destinationport.

A maximum of four SPAN entries can be configured.SPAN cannot be configured for ports that have been used for SPAN.

Description of Port Mirroring Parameters

Parameter	Description	Default Value
Src Port	A source port is also called a monitored port.  Data flows on the source port are monitored for network analysis or  troubleshooting.   Support selecting multiple source ports and  mirroring multiple ports to one destination port	N/A
Dest Port	The destination port is also called the  monitoring port, that is, the port connected to the monitoring device, and  forwards the received packets from the source port to the monitoring device.	N/A
Monitor Direction	The type of packets (data flow direction) to be  monitored by a source port.   l  Both:  All packets passing through the port, including incoming and outgoing packets   l   Incoming: All packets received by a source port are copied to the  destination port   l   Outgoing: All packets transmitted by a source port are copied to the  destination port	Both
Receive Pkt from Non-Src Ports	It is applied to the destination port and  indicates whether a destination port forwards other packets while monitoring  packets.   l  Enabled:  While monitoring the packets of the source port, the packets of other  non-source ports are normally forwarded   l   Disabled: Only monitor source port packets	Enable