Chapter 31: Loopback Detection Commands
– 1002 –
S
YNTAX
[no] loopback-detection
D
EFAULT
S
ETTING
Disabled
C
OMMAND
M
ODE
Global Configuration
Interface Configuration (Ethernet, Port Channel)
C
OMMAND
U
SAGE
Loopback detection must be enabled globally for the switch by this
command and enabled for a specific interface for this function to take
effect.
E
XAMPLE
This example enables general loopback detection on the switch, disables
loopback detection provided for the spanning tree protocol on port 1, and
then enables general loopback detection for that port.
Console(config)#loopback-detection
Console(config)#interface ethernet 1/1
Console(config-if)#no spanning-tree loopback-detection
Console(config-if)#loopback-detection
Console(config)#
loopback-detection
action
This command specifies the protective action the switch takes when a
loopback condition is detected. Use the no form to restore the default
setting. Use the
no
form to restore the default setting.
S
YNTAX
loopback-detection action
{
block
|
none
|
shutdown
}
no loopback-detection action
block
- When a loopback is detected on a port which a member of a
specific VLAN, packets belonging to that VLAN are dropped at the
offending port.
none
- No action is taken.
shutdown
- Shuts down the interface.
D
EFAULT
S
ETTING
Shut down
C
OMMAND
M
ODE
Global Configuration
Summary of Contents for SSE-G2252
Page 42: ...44 General IP Routing on page 627...
Page 603: ...Chapter 16 IP Configuration Setting the Switch s IP Address IP Version 6 609...
Page 883: ...Chapter 24 General Security Measures Port based Traffic Segmentation 894...
Page 989: ...Chapter 30 Congestion Control Commands Automatic Traffic Control Commands 1000 Console...
Page 1007: ...Chapter 33 Address Table Commands 1019...
Page 1137: ...Chapter 38 Quality of Service Commands 1150...
