Using Multicast Ethernet Loopback - Cisco Catalyst 4500 Series Configuration Manual

Chapter 63 Configuring Ethernet OAM and CFM
Command
Step 17
ethernet cfm ais link-status level level-id
Step 18
end
Step 19
show ethernet cfm smep
Step 20
show ethernet cfm error
Step 21
copy running-config startup-config
Use the no form of the commands to return to the default configuration or to remove a configuration. To
disable the generation of ETH-AIS frames, enter the disable config-ais-link-cfm mode command.
This is an example of the output from the show ethernet cfm smep command when Ethernet AIS has
been enabled:
Switch# show ethernet cfm smep
SMEP Settings:
--------------
Interface: GigabitEthernet1/0/3
LCK-Status: Enabled
LCK Period: 60000 (ms)
Level to transmit LCK: Default
AIS-Status: Enabled
AIS Period: 60000 (ms)
Level to transmit AIS: Default
Defect Condition: AIS

Using Multicast Ethernet Loopback

You can use the ping privileged EXEC command to verify bidirectional connectivity of a MEP, as in this
example:
Switch# ping ethernet multicast domain CD vlan 10
Type escape sequence to abort.
Sending 5 Ethernet CFM loopback messages to 0180.c200.0037, timeout is 5 seconds:
Reply to Multicast request via interface FastEthernet1/0/3, from 001a.a17e.f880, 8 ms
Total Loopback Responses received: 1
Managing and Displaying Ethernet CFM Information
You can use the privileged EXEC commands in these tables to clear Ethernet CFM information.
Table 63-1 Clearing CFM Information
Command
clear ethernet cfm ais domain domain-name
mpid id {vlan vlan-id | port}
clear ethernet cfm ais link-status
interface interface-id
clear ethernet cfm error
OL-25340-01
[
interface interface-id
Purpose
Clears MEPs with matching domain and VLAN ID out of AIS defect
condition.
Clears a SMEP out of AIS defect condition.
Clears all CFM error conditions, including AIS.
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
Managing and Displaying Ethernet CFM Information
Purpose
Configures the maintenance level for sending AIS frames
transmitted by the SMEP on the interface. The range is 0 to
7.
Returns to privileged EXEC mode.
]
Verifies the configuration.
Displays received ETH-AIS frames and other errors.
(Optional) Saves your entries in the configuration file.
63-31