39-32
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-06
Chapter 39 Configuring Ethernet OAM, CFM, and E-LMI
Ethernet CFM and Ethernet OAM Interaction
Ethernet CFM and Ethernet OAM Interaction
Beginning with Cisco IOS Release 12.2(40)SE, you can also configure the OAM Manager infrastructure
for interaction between CFM and Ethernet OAM. When the Ethernet OAM Protocol is running on an
interface that has CFM MEPs configured, Ethernet OAM informs CFM of the state of the interface.
Interaction is unidirectional from the Ethernet OAM to the CFM Protocol, and the only information
exchanged is the user network interface port status.
The Ethernet OAM Protocol notifies CFM when these conditions occur:
• Error thresholds are crossed at the local interface.
CFM responds to the notification by sending a port status of Local_Excessive_Errors in the Port
StatusType Length Value (TLV).
• Ethernet OAM receives an OAMPDU from the remote side showing that an error threshold is
exceeded on the remote endpoint.
CFM responds to the notification by sending a port status of Remote_Excessive_Errors in the Port
Status TLV.
• The local port is set into loopback mode.
CFM responds by sending a port status of Test in the Port Status TLV.
• The remote port is set into loopback mode.
CFM responds by sending a port status of Test in the Port Status TLV.
This section includes this information:
• Configuring Ethernet OAM Interaction with CFM, page 39-33
• Ethernet OAM and CFM Configuration Example, page 39-34
For more information about CFM and interaction with Ethernet OAM, see the Ethernet Connectivity
Fault Management feature module at this URL:
http://www.cisco.com/en/US/products/ps6922/products_feature_guide09186a008066fcb8.html
show ethernet lmi statistics interface interface-id Displays Ethernet LMI interface statistics sent to the CE from the
status request poll.
show ethernet lmi uni map interface [interface-id]Displays information about the E-LMI UNI VLAN map sent to the CE
from the status request poll.
show ethernet service evc {detail | id evc-id |
interface interface-id}Displays information about the specified Ethernet virtual connection
(EVC) customer-service instance or all configured service instances.
show ethernet service instance {detail | id
efp-identifier interface interface-id | interface
interface-id}
Displays information relevant to the specified Ethernet service
instances (EFPs).
show ethernet service interface [interface-id]
[detail]Displays information about OAM manager interfaces.
Table 39-4 Displaying E-LMI and OAM Manager Information
Command Purpose