Example: Configuring Ethernet OAM

On the network shown in Figure 1, perform the following operations:

• Enable Ethernet OAM on Device A and Device B to auto-detect link errors between the two devices

• Determine the performance of the link between Device A and Device B by collecting statistics about the error frames received by Device A

	IMPORTANT: By default, interfaces on the device are disabled (in ADM or Administratively Down state). To have an interface operate, you must use the undo shutdown command to enable that interface.

1. Configure Device A:

   # Configure FortyGigE 1/0/1 to operate in active Ethernet OAM mode, and enable Ethernet OAM for it.

   <DeviceA> system-view
   [DeviceA] interface fortygige 1/0/1
   [DeviceA-FortyGigE1/0/1] oam mode active
   [DeviceA-FortyGigE1/0/1] oam enable
   

   # Set the errored frame event detection window to 20000 milliseconds, and set the errored frame event triggering threshold to 10.

   [DeviceA-FortyGigE1/0/1] oam errored-frame window 200
   [DeviceA-FortyGigE1/0/1] oam errored-frame threshold 10
   [DeviceA-FortyGigE1/0/1] quit
   

2. Configure Device B:

   # Configure FortyGigE 1/0/1 to operate in passive Ethernet OAM mode (the default), and enable Ethernet OAM for it.

   <DeviceB> system-view
   [DeviceB] interface 
   [DeviceB-FortyGigE1/0/1] oam mode passive
   [DeviceB-FortyGigE1/0/1] oam enable
   [DeviceB-] quit
   

Use the display oam critical-event command to display the statistics of Ethernet OAM critical link events. For example:

# Display the statistics of Ethernet OAM critical link events on all the ports of Device A.

[DeviceA] display oam critical-event
-----------[FortyGigE1/0/1] -----------
 Local link status   : UP
 Event statistics
   Link fault        : Not occurred
   Dying gasp        : Not occurred
   Critical event    : Not occurred

The output shows that no critical link event occurred on the link between Device A and Device B.

Use the display oam link-event command to display the statistics of Ethernet OAM link events. For example:

# Display Ethernet OAM link event statistics of the local end of Device A.

[DeviceA] display oam link-event local
------------ [FortyGigE1/0/1] -----------
 Link status: UP
 OAM local errored frame event
   Event time stamp        : 5789 x 100 milliseconds
   Errored frame window    : 200 x 100 milliseconds
   Errored frame threshold : 10 error frames
   Errored frame           : 13 error frames
   Error running total     : 350 error frames
   Event running total     : 17 events

The output shows the following:

• 350 errors occurred after Ethernet OAM is enabled on Device A.

• 17 errors were caused by error frames.

• The link is unstable.