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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.
LFMruns atthe physical oraggregatedinterfacelevel. Whenconfiguredon anaggregated
interface, LFM is run individually on each member link. LFM is a link-layer protocol and
doesnot need a Layer 3(IPv4 orIPv6) address tooperate. This allows for LFMto function
on circuit cross-connect/transport cross-connect (CCC/TCC) encapsulated interfaces.
Related
Documentation
MX Series Ethernet Services Routers Solutions Page•
• 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 © 2010, Juniper Networks, Inc.