Example: Configuring and Monitoring Port Mirroring (S-, K-Series)

This section describes how to use Extreme Networks NetSight Console from a Network Management Station (NMS) to display RMON statistics for monitoring port mirroring.

Log onto NetSight Console.

On the console main screen, expand My Network in the file directory tree, right-click All Devices, and select Add Device.
The Add Device screen displays.
Model the S- K- or 7100-Series device by entering its IP address in the field provided. Click OK.
On the console main screen, expand All Devices in the file directory tree to show the IP address(es) of the device(s) you just modeled.
Right-click on the IP address of the S- K- or 7100-Series device and select Device Manager.
The device manager screen displays for the S-Series device.
Right click on port 1 (ge.1.1) and select RMON Ethernet Statistics.
Repeat step 9 for port 5 (ge.1.5).
RMON Ethernet statistics charts will display for ports 1 and 5.
Note that the section of the two charts that shows the frame count by frame size lists no larger size frames (512-1518 bytes). In the next step, you will create large frames.
Open the Command Prompt window and set up a continuous ping to the device, as shown below. Use -l 1400 to set the size of the ping frame to 1400 bytes and -t to set a continuous ping.
Refer back to the RMON Ethernet Statistics windows opened in Steps 9 and 10. You should see the number of 1024 - 1518 frames incrementing on Port 1 because the NMS is connected on this port. You should also see that these larger size frames are not incrementing on Port 5.
From the terminal session with the device, create a port mirroring instance with port 1 (ge.1.1) as the source and port 5 (ge.1.5) as the destination port.
System(su)->set port mirroring create ge.1.1 ge.1.5 both
Verify the mirroring configuration.
System(su)->show port mirroring

Port Mirroring

==============

Source Port = ge.1.1

Target Port = ge.1.5

Frames Mirrored = Rx and Tx
```
   Port Mirroring Admin status = enabled
   Port Mirroring Oper status = enabled
```
Refer again to the RMON Ethernet Statistics windows and notice that both port 1 and port 5 are now incrementing the larger size frames. If you connected a network analyzer to port 5, you would see these frames being received and transmitted on port 1.

Published May 2016prev | next

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