Restarting The Protocol - Cisco Nexus 3000 series Configuration Manual

Restarting the Protocol

DETAILED STEPS
Command or Action
Step 1
switch# configure terminal
Step 2
switch(config)# interface type slot/port
Step 3 switch(config-if)# spanning-tree link-type
{auto | point-to-point | shared}
This example shows how to configure the link type as point to point:
switch# configure terminal
switch (config)# interface ethernet 1/4
switch(config-if)# spanning-tree link-type point-to-point
Restarting the Protocol
An MST bridge can detect that a port is at the boundary of a region when it receives a legacy BPDU or an
MST BPDU that is associated with a different region. However, the STP protocol migration cannot determine
whether the legacy switch, which is a switch that runs only IEEE 802.1D, has been removed from the link
unless the legacy switch is the designated switch. Enter this command to restart the protocol negotiation (force
the renegotiation with neighboring switches) on the entire switch or on specified interfaces.
SUMMARY STEPS
1. switch# clear spanning-tree detected-protocol [interface interface [interface-num | port-channel]]
DETAILED STEPS
Command or Action
Step 1 switch# clear spanning-tree detected-protocol [interface interface
[interface-num | port-channel]]
This example shows how to restart MST on the Ethernet interface on slot 2, port 8:
switch# clear spanning-tree detected-protocol interface ethernet 2/8
Cisco Nexus 3000 Series NX-OS Layer 2 Switching Configuration Guide, Release 5.0(3)U1(1)
126
Purpose
Enters configuration mode.
Specifies the interface to configure, and enters interface configuration
mode.
Configures the link type to be either point to point or shared. The system
reads the default value from the switch connection. Half-duplex links
are shared and full-duplex links are point to point. If the link type is
shared, the STP reverts to 802.1D. The default is auto, which sets the
link type based on the duplex setting of the interface.
Purpose
Restarts MST on entire switch or specified
interfaces.
Configuring Multiple Spanning Tree