Associating Efm Oam With An Interface; Checking The Configuration - Huawei NetEngine80E Configuration Manual - Reliability

HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability

8.5.2 Associating EFM OAM with an Interface

By associating EFM OAM with a physical interface, you can use the OAM management module
to notify the bound interface management module of fault information after EFM OAM detects
a fault.
Context
After EFM OAM is enabled on an interface, the status of this interface changes when the interface
receives an OAM PDU control request packet with the Link Fault Status flag.
Do as follows on the devices at one end or both ends of the link:
Procedure
l
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8.5.3 Checking the Configuration

By viewing the TriggerIfDown field, you can check whether the configurations are successful.
Issue 02 (2011-09-10)
Associate an error event with an interface and set the interface to the blocking state when
the error event occurs.
Setting the interface to the blocking state is applicable to a scenario where traffic can be
switched back automatically after the faulty link recovers. After the associated interface is
blocked, all traffic is interrupted except EFM protocol packets.
1. Run:
system-view
The system view is displayed.
2. Run:
interface interface-type interface-number
The view of an interface at one end of the link is displayed.
3. Run:
efm trigger if-down
EFM OAM is associated with the interface.
By default, EFM OAM is not associated with an interface.
The efm trigger if-down
is enabled on the interface with the
When EFM OAM is associated with the current interface and detects a link fault on
the current interface, no other packets except EFM protocol packets can be forwarded
on the interface and Layer 2 and Layer 3 services are blocked. Therefore, the
association between EFM OAM and an interface may greatly affect services. When
EFM OAM on an interface detects link fault recovery, all packets can be forwarded
on the interface and Layer 2 and Layer 3 services are unblocked.
Before configuring the association between EFM OAM and an interface, ensure that
the EFM OAM protocol on both ends of the link is in the detect state.
If Layer 2 and Layer 3 services are blocked due to a misoperation, you can run the
undo efm trigger if-down
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command is valid in the interface view only after EFM OAM
efm enable command.
command in the interface view to restore services.
8 Ethernet OAM Configuration
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