Associating Ethernet Cfm With An Interface; Establishing The Configuration Task - Huawei Quidway S3700 Series Configuration Manual

Quidway S3700 Series Ethernet Switches
Configuration Guide - Reliability
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4.12 Associating Ethernet CFM with an Interface

The association between Ethernet CFM and an interface is used to detect faults of an active link
in the LACP static link aggregation group or in the manually-configured 1:1 active/standby link
aggregation group and then trigger the protection switchover.

4.12.1 Establishing the Configuration Task

Applicable Environment
After association between an Ethernet CFM module and an interface is configured, if a MEP
detects a connectivity fault between the MEP and a specified RMEP in the same MA, the OAM
management module blocks and then unblocks the interface where the MEP is located so that
other modules can detect the fault.
Figure 4-5 Application scenario of association between an Ethernet CFM module and an
interface (1)
SwitchA
Figure 4-6 Application scenario of association between an Ethernet CFM module and an
interface (2)
SwitchA
Issue 01 (2011-10-26)
A MEP is not required to initiate Gmac trace. The destination node does not need to be a
MEP or a MIP. Gmac trace can be implemented without configuring the MD, MA, or MEP
on the source device, the intermediate device, and the destination device.
The two devices must be enabled with 802.1ag of the same version. If the local device is
enabled with IEEE 802.1ag Draft 7 and the peer device is enabled with IEEE Standard
802.1ag-2007, the faulty node cannot be located when the trace mac command is run to
detect connectivity of the link between the local and peer devices.
Ethernet CFM
Ethernet0/0/1
Ethernet0/0/1
The interface associated with Ethernet CFM
Ethernet0/0/1
Ethernet0/0/2
Ethernet0/0/3
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Ethernet0/0/1
Ethernet0/0/2
SwitchC
Ethernet CFM
Link1
Ethernet0/0/2
Link2
Link3
Active link
Inactive link
Aggregation group in
static LACP mode
4 Ethernet OAM Configuration
SwitchB
Ethernet0/0/1
SwitchB
Ethernet0/0/3
MEPs in MA1
MEPs in MA2
MEPs in MA3
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