2-10
z
Ethernet OAM remote loopback 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
Remote loopback is available only on full-duplex links that support remote loopback at both ends.
z
Ethernet OAM Remote loopback needs the support of the peer hardware.
z
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 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
remote loopback, or when the Ethernet OAM connection times out.
z
Ethernet OAM remote loopback is only applicable to individual links. It is not applicable to link
aggregation member ports. In addition, you cannot assign ports where Ethernet OAM remote
loopback is being performed to link aggregation groups. For more information about link
aggregation groups, refer to
Ethernet Link Aggregation Configuration
in the
Layer 2 - LAN
Switching Configuration Guide
.
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
Layer 2 - LAN Switching Configuration Guide
.
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
Clear statistics on Ethernet OAM packets and
Ethernet OAM link error events
reset oam
[
interface interface-type
interface-number
]
Available
in user
view only
