3com 8807 Guia De Referência

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1046
C
HAPTER
 64: P
ORT
 L
OOPBACK
 D
ETECTION
 C
OMMANDS
undo loopback-detection enable vlan { vlanlist | all }
View
System view
Parameter
None
Description
Use the loopback-detection enable vlan command to enable the loopback 
detection function on a VLAN to perform the loopback detection on all ports in 
the VLAN.
Use the undo loopback-detection enable vlan command to disable the 
loopback detection on a VLAN.You can perform such configuration on up to 800 
VLANs.
By default, the loopback detection is not performed on any VLAN.
Example
# Configure the system to perform loopback detection on all ports belonging to 
VLAN 2.
<SW8800> system-view
 
[SW8800] loopback-detection enable vlan 2. 
loopback-detection 
interval-time
Syntax
loopback-detection interval-time time
undo loopback-detection interval-time
View
System view
Parameter
time: Interval at which the external loopback detection is performed on ports, in 
the range of 60 to 7200, in seconds.The default value is 60 seconds.
Description
Use the loopback-detection interval-time command to set the interval at which 
the external loopback detection is performed on ports.
Use the undo loopback-detection interval-time command to restore this 
interval time to the default.
Related command: display loopback-detection.
Example
# Set the interval for the external loopback detection on each port to 120 seconds.
<SW8800> system-view
 
[SW8800] loopback-detection interval-time 120#