Huawei NetEngine80E Configuration Manual - Reliability page 402

HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
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Issue 02 (2011-09-10)
When a MEP detects a connectivity fault between the MEP and a specified RMEP within
the same MA, the OAM management module performs the restart function, that is, shuts
down the interface on which the MEP resides for seven seconds and then starts it.
Association between EFM OAM and the PBB-TE service instance (SI)
When the EFM OAM module detects a connectivity fault, the OAM management module
sends fault messages to the device at the other end through the PBB-TE tunnel to which
the SI that EFM OAM associates with is bound.
Association between Ethernet CFM and the PBB-TE SI
When the Ethernet CFM module detects a connectivity fault, the OAM management
module sends fault messages to the device at the other end through the PBB-TE tunnel to
which the SI that Ethernet CFM associates with is bound.
Association between Ethernet CFM and EFM OAM
When the Ethernet CFM module detects a fault in an MA, the OAM management module
sends fault messages to the peer device enabled with EFM OAM through the interface.
When the EFM OAM module detects a fault, the OAM management module sends fault
messages to the MA through the interface.
– Ethernet CFM sends fault messages to EFM OAM.
– EFM OAM sends fault messages to Ethernet CFM.
– Ethernet CFM and EFM OAM perform bidirectional transmission of fault messages.
Association between Ethernet CFM and Ethernet CFM
When the Ethernet CFM module detects a fault in an MA, the OAM management module
sends fault messages to the MA at the other side through the binding relationship.
– Ethernet CFM at one side sends fault messages to Ethernet CFM at the other side.
– Ethernet CFMs at both sides perform bidirectional transmission of fault messages.
Association between Ethernet CFM and Bidirectional Forwarding Detection (BFD)
When the Ethernet CFM module detects a fault in an MA, the OAM management module
sends fault messages to BFD at the other side through the binding relationship. When BFD
detects a fault, BFD sends fault messages to the MA through the binding relationship.
– Ethernet CFM sends fault messages to BFD.
– BFD sends fault messages to Ethernet CFM.
– Ethernet CFM and BFD perform bidirectional transmission of fault messages.
Association between Ethernet CFM and Multiprotocol Label Switching (MPLS) OAM
When the Ethernet CFM module detects a fault in an MA, the OAM management module
sends fault messages to MPLS OAM through the binding relationship. When MPLS OAM
detects a fault, the OAM management module sends fault messages to the MA through the
binding relationship.
– Ethernet CFM sends fault messages to MPLS OAM.
– MPLS OAM sends fault messages to Ethernet CFM.
Association between EFM OAM and BFD
When the EFM OAM module detects a fault, the OAM management module sends fault
messages to BFD at the other side through the interface. When BFD detects a fault, BFD
sends fault messages to EFM OAM through the interface.
– EFM OAM sends fault messages to BFD.
– BFD sends fault messages to EFM OAM.
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8 Ethernet OAM Configuration
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