Oam Loopback - 3Com S7906E Command Reference Manual

<Sysname> system-view
[Sysname] oam errored-frame-seconds threshold 100

oam loopback

Syntax
oam loopback
undo oam loopback
View
Ethernet port view
Default Level
2: System level
Parameters
None
Description
Use the oam loopback command to enable Ethernet OAM loopback testing on an Ethernet port.
Use the undo loopback command to disable Ethernet OAM loopback testing.
By default, Ethernet OAM loopback testing is disabled.
Note that:
Ethernet OAM loopback testing is available only after the Ethernet OAM connection is established.
Ethernet OAM loopback testing can be performed by Ethernet OAM entities operating in the active
Ethernet OAM mode only.
Ethernet OAM loopback testing is available only when it is supported on both the local port and the
peer port.
Enabling Ethernet OAM loopback testing interrupts data communications. After Ethernet OAM
loopback testing is disabled, all the ports involved will be shut down and then brought 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 is timed out.
Related commands: oam enable, oam mode.
Examples
# Enable Ethernet OAM loopback testing on GigabitEthernet2/0/1.
<Sysname> system-view
[Sysname] interface GigabitEthernet 2/0/1
[Sysname-GigabitEthernet2/0/1] oam mode active
[Sysname-GigabitEthernet2/0/1] oam enable
[Sysname-GigabitEthernet2/0/1] oam loopback
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