H3C Technologies H3C SR8800 - Manual (Page 24)

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NOTE:
•
Ethernet OAM remote loopback is available only after the Ethernet OAM connection is established and
can be performed only by Ethernet OAM entities operating in active Ethernet OAM mode.
• Remote loopback is available only on full-duplex links that support remote loopback at both ends.
• Ethernet OAM remote loopback must be supported by both the remote port and the sending port.
• Enabling Ethernet OAM remote loopback interrupts data communications. After Ethernet OAM remote
loopback is disabled, all the ports involved will shut down and then come up. Ethernet OAM remote
loopback can be disabled by any of the following events: executing the undo oam enable command to
disable Ethernet OAM, executing the undo oam loopback command to disable Ethernet OAM remote
loopback, and Ethernet OAM connection timing out.
• Ethernet OAM remote loopback is only applicable to individual links. It is not applicable to link
aggregation member ports. In addition, do not assign ports where Ethernet OAM remote loopback is
being performed to link aggregation groups. For more information about link aggregation groups, see
Layer 2—LAN Switching Configuration Guide.
• Enabling internal loopback test on a port in remote loopback test can terminate the remote loopback
test. For more information about loopback test, see
Interface Configuration Guide.
Rejecting the Ethernet OAM remote loopback request from a
remote port
The Ethernet OAM remote loopback function impacts other services. To solve this problem, you can
disable a port from being controlled by the Loopback Control OAMPDUs sent by a remote port. The local
port then rejects the Ethernet OAM remote loopback request from the remote port.
To reject the Ethernet OAM remote loopback request from a remote port:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter Ethernet port view.
interface interface-type
interface-number
N/A
3. Reject the Ethernet OAM
remote loopback request from
a remote port.
oam loopback reject-request
By default, a port does not reject
the Ethernet OAM remote
loopback request from a remote
port.
Displaying and maintaining Ethernet OAM
configuration
Task Command Remarks
Display global Ethernet OAM
configuration. display oam configuration [ | { begin | exclude
| include } regular-expression ]
Available in any view
Display the statistics on critical
events after an Ethernet OAM
connection is established. display oam critical-event [ interface
interface-type interface-number ] [ | { begin |
exclude | include } regular-expression ]
Available in any view