Brocade Communications Systems Brocate Ethernet Access Switch 6910 - Manual (Page 573)

Brocade 6910 Ethernet Access Switch Configuration Guide 523
53-1002581-01
Chapter
25
CFM Commands
Connectivity Fault Management (CFM) is an OAM protocol that includes proactive connectivity
monitoring using continuity check messages, fault verification through loop back messages, and
fault isolation by examining end-to-end connections between Provider Edge devices or between
Customer Edge devices.
CFM is implemented as a service level protocol based on service instances which encompass only
that portion of the metropolitan area network supporting a specific customer. CFM can also provide
controlled management access to a hierarchy of maintenance domains (such as the customer,
service provider, and equipment operator).
The following list of commands support functions for defining the CFM structure, including
domains, maintenance associations, and maintenance access points. It also provides commands
for fault detection through continuity check messages for all known maintenance points, and
cross-check messages for statically configured maintenance points located on other devices. Fault
verification is supported through loop back messages, and fault isolation through link trace
messages. Fault notification is also provided by SNMP alarms which are automatically generated
by maintenance points when connectivity faults or configuration errors are detected in the local
maintenance domain.
TABLE 124 CFM Commands
Command Function Mode
Defining CFM Structures
ethernet cfm ais level Configures the maintenance level at which Alarm Indication Signal
information will be sent GC
ethernet cfm ais ma Enables the MEPs within the specified MA to send frames with AIS
information GC
ethernet cfm ais period Configures the interval at which AIS information is sent GC
ethernet cfm ais suppress
alarm Suppresses AIS messages following the detection of
defect conditions GC
ethernet cfm domain Defines a CFM maintenance domain, sets the authorized maintenance
level, and enters CFM configuration mode; also specifies the MIP
creation method for MAs within this domain GC
ethernet cfm enable Enables CFM processing globally on the switch GC
ma index name Creates a maintenance association within the current maintenance
domain, maps it to a customer service instance, and sets the manner
in which MIPs are created for this service instance CFM
ma index name-format Specifies the name format for the maintenance association as IEEE
802.1ag character based, or ITU-T SG13/SG15 Y.1731 defined
ICC-based format CFM
ethernet cfm mep Sets an interface as a domain boundary, defines it as a maintenance
end point (MEP), and sets direction of the MEP in regard to sending
and receiving CFM messages IC
ethernet cfm port-enable Enables CFM processing on an interface IC