3com S7906E Guide De Référence

 

1-15 

<Sysname> system-view 

[Sysname] oam errored-frame-seconds threshold 100 

Ethernet port view 

2: System level 

None 

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: 

z 

Ethernet OAM loopback testing is available only after the Ethernet OAM connection is established. 

z 

Ethernet OAM loopback testing can be performed by Ethernet OAM entities operating in the active 

Ethernet OAM mode only. 

z 

Ethernet OAM loopback testing is available only when it is supported on both the local port and the 

peer port. 

z 

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. 

z 

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. 

# 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