Configuration Notes and Constraints

When configuring EFM OAM, pay attention to the following notes:

• An EFM connection cannot be established between two EFM OAM entities that are both in passive mode.

• Only the active mode end can run commands ethernet-oam remote-loopback start interface <interface-name> or ethernet-oam remote-loopback stop interface <interface-name> to start | stop EFM OAM remote loopback tests.

• Before starting the EFM OAM remote loopback tests, make sure:

  • The EFM OAM connection has been established successfully.

  • Users have to configure command set protocols ethernet-oam interface <interface-name> remote-loopback supported on the responding end to enable reactions to loopback control OAMPDUs from peers.

• Remote loopback cannot be configured on the same port as the loopback of the physical port.

Configuring EFM OAM

Step 1      Enable EFM OAM function on both end of the link.

         set protocols ethernet-oam interface <interface-name> enable <true | false>

Step 2      Configure the EFM mode for this Ethernet port. By default, the EFM OAM interface works in active mode.

         set protocols ethernet-oam interface <interface-name> mode <active | passive>

Step 3      Enable reactions to loopback control OAMPDUs from peers.

         set protocols ethernet-oam interface <interface-name> remote-loopback supported

Step 4      (Optional) Configure EFM OAM timeout values.

         set protocols ethernet-oam interface <interface-name> remote-loopback timeout <loopback-timeout>

         set protocols ethernet-oam interface <interface-name> timeout <oam-timeout>

Step 5      Enable EFM OAM remote loopback tests on the specified port.

         ethernet-oam remote-loopback start interface <interface-name>

Step 6      Stop EFM OAM remote loopback tests on the specified port.

         ethernet-oam remote-loopback stop interface <interface-name>

Step 7      Commit the configuration.

         commit

Step 8      View EFM OAM configuration information, session status and interface statistics.

         run show ethernet-oam [interface <interface-name>]

         run show ethernet-oam statistics [interface <interface-name>]

Example for Configuring EFM OAM

Networking Requirements

Figure 1.     EFM OAM Configuration Example

Open

As shown in Figure 1, the link between Switch C to Switch A is a newly deployed network. The administrator hopes to achieve the following network management:

• Test network connectivity and quality before enabling the new network.

• Dynamically monitor the link quality after the link is properly enabled.

Follow the configuration roadmap below to configure EFM function:

1. Configure EFM basic functions on Switch A and Switch C devices to achieve automatic detection of link connectivity.

2. Configure EFM remote loopback on Switch A and Switch C to conduct link connectivity and performance testing.

Procedure

Step 1      Configure EFM basic function.

         c) Enable EFM OAM function on interface ge-1/1/1 on Switch C.

         e) Verify the Configuration.

If the EFM configurations of Switch A and Switch C are correct, a connection will be established between them after successful negotiation in the Discovery phase. Run the command run show ethernet-oam on Switch A or Switch C, you can see that the EFM OAM protocol status of interface ge-1/1/1 is SEND_ANY.

Step 2      Enable remote loopback.

• After successfully configuring EFM remote loopback, run the command run show ethernet-oam, and you can see that the loopback status is local loopback on Switch C and remote loopback on Switch A.

• View the statistics information of EFM OAMPDU packets, we can see the number of received Loopback Control OAMPDU packet is 1 on Switch C.

Step 3        Stop EFM remote loopback.

Step 4        Verify the Configuration.

• Run the command run show ethernet-oam, and you can see that the loopback status is no loopback on Switch C and Switch A.

• View the statistics information of EFM OAMPDU packets, we can see the number of received Loopback Control OAMPDU packet is 2 on Switch C.