Reinitializing The Protocol For Mst - Cisco Nexus 9000 Series Configuration Manual

Configuring MST Using Cisco NX-OS

Reinitializing the Protocol for MST

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 device, which is a device that runs only IEEE 802.1D, has been removed from the link
unless the legacy device is the designated switch. Enter this command to reinitialize the protocol negotiation
(force the renegotiation with neighboring devices) on the entire device or on specified interfaces.
Procedure
Step 1
This example shows how to reinitialize MST on the Ethernet interface on slot 2, port 8:
switch# clear spanning-tree detected-protocol interface ethernet 2/8
Verifying the MST Configuration
To display MST configuration information, perform one of the following tasks:
Command
show running-config spanning-tree [all]
show spanning-tree mst configuration
show spanning-tree mst [detail]
show spanning-tree mst instance-id [detail]
show spanning-tree mst instance-id interface
{ethernet slot/port | port-channel channel-number}
[detail]
show spanning-tree summary
show spanning-tree detail
show spanning-tree {vlan vlan-id | interface
{[ethernet slot/port] | [port-channel
channel-number]}} [detail]
Command or Action
clear spanning-tree detected-protocol [interface
interface [interface-num | port-channel]]
Example:
switch# clear spanning-tree detected-protocol
Cisco Nexus 9000 Series NX-OS Layer 2 Switching Configuration Guide, Release 7.x
Reinitializing the Protocol for MST
Purpose
Reintializes MST on an entire device
or specified interfaces.
Purpose
Displays STP information.
Displays MST information.
Displays information about MST instances.
Displays information about the specified MST
instance.
Displays MST information for the specified interface
and instance.
Displays summary STP information.
Displays detailed STP information.
Displays STP information per VLAN and interface.
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