Cisco Nexus 5000 Series Switch CLI Software Configuration Guide, NX-OS 4.0(1a)N1 (OL-16597-01, January 2009)

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Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
OL-16597-01
Chapter 9 Configuring MST
Verifying MST Configurations
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.
To restart the protocol, perform this task:
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
Verifying MST Configurations
To display MST configuration information, perform one of the following tasks:
The following example shows how to display current MST configuration:
switch# show spanning-tree mst configuration
% Switch is not in mst mode
Name [mist-attempt]
Revision 1 Instances configured 2
Instance Vlans mapped
-------- ---------------------------------------------------------------------
0 1-12,14-41,43-4094
1 13,42
-------------------------------------------------------------------------------
Command Purpose
Step 1
switch# clear spanning-tree
detected-protocol [interface interface
[interface-num | port-channel]]
Restarts MST on entire switch or specified interfaces.
Command Purpose
switch# show running-config
spanning-tree [all]
Displays the current spanning tree configuration.
switch# show spanning-tree mst [options]
Displays detailed information for the current MST
configuration.