LevelOne GTL-2691 - Manual (Page 1084)

C HAPTER 37 | Spanning Tree Commands
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spanning-tree
tc-prop-stop
This command stops propagating topology changes on an interface. Use
the no form to restore the default setting.
S YNTAX
[no] spanning-tree tc-prop-stop
D EFAULT S ETTING
Propagation of topology change notification messages are enabled
C OMMAND M ODE
Interface Configuration (Ethernet, Port Channel)
C OMMAND U SAGE
This command may be used to troubleshoot excessive TCN messages
appearing on an interface. The might occur when topology changes are
occurring repeatedly at short intervals. Switches will constantly fast-age
their forwarding tables, and flooding will be nearly constant. Topology
changes should occur rarely in a well-configured network, but cases such
as port flapping would cause repetitive topology changes and flooding.
E XAMPLE
This example stops propagation of TCN messages on port 5.
Console(config)#interface ethernet 1/5
Console(config-if)#spanning-tree tc-prop-stop
Console(config-if)#
spanning-tree
loopback-detection
release
This command manually releases a port placed in discarding state by
loopback-detection.
S YNTAX
spanning-tree loopback-detection release interface
interface
ethernet unit/port
unit - Stack unit. (Range: 1-8)
port - Port number. (Range: 1-26)
port-channel channel-id (Range: 1-32)
C OMMAND M ODE
Privileged Exec
C OMMAND U SAGE
Use this command to release an interface from discarding state if loopback
detection release mode is set to “manual” by the spanning-tree loopback-
detection release-mode command and BPDU loopback occurs.