Administrator Guide

Layer 2 Switching Commands 748
clear spanning-tree detected-protocols
Use the clear spanning-tree detected-protocols command in Privileged Exec
mode to restart the protocol migration process (force the renegotiation with
neighboring switches) on all interfaces or on the specified interface.
Syntax
clear spanning-tree detected-protocols [ interface-id ]
• interface-id —An Ethernet or port channel interface identifier
Default Configuration
This command has no default setting.
Command Mode
Privileged Exec mode
User Guidelines
This feature is used only when working in RSTP or MSTP mode.
Example
The following example restarts the protocol migration process (forces the
renegotiation with neighboring switches) on Gi1/0/1.
console#clear spanning-tree detected-protocols gigabitethernet 1/0/1
show spanning-tree
summary
spanning-tree guard spanning-tree
portfast bpdufilter
default
spanning-tree vlan
hello-time
show spanning-tree
vlan
spanning-tree
loopguard
spanning-tree
portfast default
spanning-tree vlan
max-age
spanning-tree spanning-tree max-
age
spanning-tree port-
priority (Interface
Configuration)
spanning-tree vlan root
spanning-tree auto-
portfast
spanning-tree max-
hops
– spanning-tree vlan
priority
2CSNXXX_SWUM204.book Page 748 Monday, January 25, 2016 1:25 PM