Edge-Core ECS4110-28T Management Manual page 1108

| Spanning Tree Commands
C 35
HAPTER
spanning-tree
loopback-detection
action
C U
OMMAND SAGE
◆ If Port Loopback Detection is not enabled and a port receives it's own
BPDU, then the port will drop the loopback BPDU according to IEEE
Standard 802.1W-2001 9.3.4 (Note 1).
Port Loopback Detection will not be active if Spanning Tree is disabled
◆
on the switch.
E
XAMPLE
Console(config)#interface ethernet 1/5
Console(config-if)#spanning-tree loopback-detection
This command configures the response for loopback detection to block user
traffic or shut down the interface. Use the no form to restore the default.
S
YNTAX
spanning-tree loopback-detection action
{block | shutdown duration}
no spanning-tree loopback-detection action
block - Blocks user traffic.
shutdown - Shuts down the interface.
duration - The duration to shut down the interface.
(Range: 60-86400 seconds)
D S
EFAULT ETTING
block
C M
OMMAND ODE
Interface Configuration (Ethernet, Port Channel)
C U
OMMAND SAGE
◆ If an interface is shut down by this command, and the release mode is
set to "auto" with the
command, the selected interface will be automatically enabled when
the shutdown interval has expired.
If an interface is shut down by this command, and the release mode is
◆
set to "manual," the interface can be re-enabled using the
tree loopback-detection release
E
XAMPLE
Console(config)#interface ethernet 1/5
Console(config-if)#spanning-tree loopback-detection action shutdown 600
Console(config-if)#
– 1108 –
spanning-tree loopback-detection release-mode
command.
spanning-