CHAPTER 12
IEEE 802.3ah OAM Link-Fault
Management
•
Ethernet OAM Link Fault Management on page 137
•
Example: Configuring Ethernet LFM Between PE and CE on page 138
•
Example: Configuring Ethernet LFM for CCC on page 139
•
Example: Configuring Ethernet LFM for Aggregated Ethernet on page 140
•
Example: Configuring Ethernet LFM with Loopback Support on page 142
Ethernet OAM Link Fault Management
Link Fault Management (LFM) can be used for physical link-level fault detection and
management. The IEEE 802.3ah LFM works across a point-to-point Ethernet link either
directly connected or through repeaters.
LFM provides the following functions:
•
Failure detection on physical links in both directions, as well as unidirectional failures.
•
Ability to put a port in link-loopback mode remotely for diagnostics.
•
Report and receive link error events such as framing or symbol errors.
LFM runs at the physical or aggregated interface level. When configured on an aggregated
interface, LFM is run individually on each member link. LFM is a link-layer protocol and
does not need a Layer 3 (IPv4 or IPv6) address to operate. This allows for LFM to function
on circuit cross-connect/transport cross-connect (CCC/TCC) encapsulated interfaces.
Related
Documentation
Ethernet OAM•
• Example: Configuring Ethernet LFM Between PE and CE on page 138
• Example: Configuring Ethernet LFM for CCC on page 139
• Example: Configuring Ethernet LFM for Aggregated Ethernet on page 140
• Example: Configuring Ethernet LFM with Loopback Support on page 142
137Copyright © 2012, Juniper Networks, Inc.
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