3com S7906E 설치 설명서

 

1-9 

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 or service loopback group member ports. In addition, you cannot assign 

ports where Ethernet OAM remote loopback 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.  

 

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