H3C LS-3100-52P-OVS-H3 Operation Manual - page 217
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Enabling OAM Loopback Testing
Follow these steps to enable Ethernet OAM loopback testing:
To do…
Use the command…
Remarks
Enter system view
System-view
—
Enter Ethernet port view
interface interface-type
interface-number
—
Enable Ethernet OAM loopback
testing
oam loopback
Required
Disabled by default.
z
Ethernet OAM loopback testing is available only after the Ethernet OAM connection is established
and can be performed only by the Ethernet OAM entities operating in active Ethernet OAM mode.
z
Loopback testing is available only on full-duplex links that support remote loopback at both ends.
z
Ethernet OAM loopback testing needs the support of the peer hardware.
z
Enabling Ethernet OAM loopback testing interrupts data communications. After Ethernet OAM
loopback testing is disabled, all the ports involved will shut down and then come up. Ethernet OAM
loopback testing is disabled when you execute the undo oam enable command to disable
Ethernet OAM, when you execute the undo oam loopback command to disable Ethernet OAM
loopback testing, or when the Ethernet OAM connection times out.
z
Ethernet OAM loopback testing is only applicable to individual links. It is not applicable to link
aggregation member ports or service loopback group member ports. In addition, you cannot assign
ports where Ethernet OAM loopback testing is being performed to link aggregation groups or
service loopback groups. For more information about link aggregation groups and service loopback
groups, refer to Link Aggregation Configuration and Service Loopback Group Configuration in the
Access Volume.
z
Enabling internal loopback test on a port in remote loopback test can terminate the remote
loopback test. For more information about loopback test, refer to Ethernet Interface Configuration
in the Access Volume.
Displaying and Maintaining Ethernet OAM Configuration
To do…
Use the command…
Remarks
Display global Ethernet OAM configuration
display oam configuration
Display the statistics on critical events after
an Ethernet OAM connection is
established
display oam critical-event [ interface
interface-type interface-number]
Display the statistics on Ethernet OAM link
error events after an Ethernet OAM
connection is established or after you clear
the statistics
display oam link-event { local | remote }
[ interface interface-type
interface-number]
Display the information about an Ethernet
OAM connection
display oam { local | remote }[ interface
interface-type interface-number]
Available
in any
view