Huawei Quidway S6700 series - 4.6 Associating EFM OAM with an Interface

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Run the display efm session command on the device with a passive interface on the link. If the

EFM OAM protocol on the passive interface is in the Loopback (be controlled) state, which

indicates that the passive interface responds to remote loopback, it indicates that the

configuration is successful.

<SwitchB> display efm session interface xgigabitethernet 0/0/1

Interface EFM State Loopback Timeout

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XGigabitEthernet0/0/1 Loopback(be controlled) --

Run the display efm session command on either of the devices on the link. If the EFM OAM

protocol on the interface is in the Detect or Discovery state, the configuration is successful.

<SwitchA> display efm session interface xgigabitethernet 0/0/1

Interface EFM State Loopback Timeout

----------------------------------------------------------------------

XGigabitEthernet0/0/1 detect --

4.6 Associating EFM OAM with an Interface

After EFM OAM is associated with an interface, services may be greatly affected. For example,

all the Layer 2 and Layer 3 services may be blocked.

4.6.1 Establishing the Configuration Task

Before configuring the association between EFM OAM and an interface, familiarize yourself

with the applicable environment, complete the pre-configuration tasks, and obtain the required

data. This can help you complete the configuration task quickly and accurately.

Applicable Environment

As shown in Figure 4-3, EFM OAM is enabled on Switch A and Switch B. EFM OAM is

associated with XGE 0/0/1 on Switch A. When the EFM OAM module on Switch A detects a

connectivity fault between Switch A and Switch B, no other packets except EFM protocol

packets can be forwarded on the interface XGE 0/0/1 and Layer 2 and Layer 3 services are

blocked. Therefore, the association of EFM OAM and the current interface may greatly affect

services. When the current interface detects the link fault recovery through EFM OAM, all

packets can be forwarded on the interface and Layer 2 and Layer 3 services are unblocked.

Figure 4-3 Diagram of associating EFM OAM with an interface

EFM OAM

Interface associated with EFM

OAM

XGE0/0/1

SwitchA

SwitchB

Pre-configuration Tasks

Before associating EFM OAM with an interface, complete the following tasks:

Quidway S6700 Series Ethernet Switches

Configuration Guide - Reliability 4 Ethernet OAM Configuration-EFM

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

165

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