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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-06
Chapter 39 Configuring Ethernet OAM, CFM, and E-LMI
Displaying Ethernet OAM Protocol Information
The switch does not support monitoring egress frames with CRC errors. The ethernet oam link-monitor
transmit-crc {threshold {high {high-frames | none} | low {low-frames}} | window milliseconds}
command is visible on the switch and you can enter it, but it is not supported. Use the no form of each
command to remove the option from the template. Use the no source-template template-name to remove
the source template association.
Displaying Ethernet OAM Protocol Information
You can use the privileged EXEC commands in Table 39-3 to display Ethernet OAM protocol
information.
Understanding E-LMI
Ethernet Local Management Interface (E-LMI) is a protocol between the customer-edge (CE) device and
the provider-edge (PE) device. It runs only on the PE-to-CE UNI link and notifies the CE device of
connectivity status and configuration parameters of Ethernet services available on the CE port. E-LMI
interoperates with an OAM protocol, such as CFM, that runs within the provider network to collect OAM
status. CFM runs at the provider maintenance level (UPE to UPE with inward-facing MEPs at the UNI).
E-LMI relies on the OAM Ethernet Infrastructure to interwork with CFM for end-to-end status of
Ethernet virtual connections (EVCs) across CFM domains.
Step 8
ethernet oam link-monitor high threshold action
error-disable-interface
(Optional) Configure the switch to put an interface in an
error disabled state when a high threshold for an error is
exceeded.
Step 9
exit Return to global configuration mode.
Step 10
interface interface-id Define an Ethernet OAM interface, and enter interface
configuration mode.
Step 11
source-template template-name Associate the template to apply the configured options to
the interface.
Step 12
end Return to privileged EXEC mode.
Step 13
show ethernet oam status [interface interface-id] Verify the configuration.
Step 14
copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose
Ta ble 39-3 Displaying Ethernet OAM Protocol Information
Command Purpose
show ethernet oam discovery [interface interface-id] Displays discovery information for all Ethernet OAM interfaces or
the specified interface.
show ethernet oam statistics [interface interface-id] Displays detailed information about Ethernet OAM packets.
show ethernet oam status [interface interface-id] Displays Ethernet OAM configuration for all interfaces or the
specified interface.
show ethernet oam summary Displays active Ethernet OAM sessions on the switch.