This command displays the settings of one or all ports within the specified multiple spanning tree instance. The parameter mstid indicates a particular MST instance. The parameter {unit/slot/port|all} indicates the desired switch port or all ports. Instead of unit/slot/port, lag lag-intf-num can be used as an alternate way to specify the LAG (Link Aggregation Group) interface. lag lag-intf-num can also be used to specify the LAG interface where lag-intf-num is the LAG port number.
If you specify 0 (defined as the default CIST ID) as the mstid, the status summary displays for one or all ports within the common and internal spanning tree.
| Format | show spanning-tree mst port summary mstid {unit/slot/port |lag lag-intf-num| all} |
| Mode |
|
| MST Instance ID | The MST instance associated with this port. |
| Interface | unit/slot/port |
| STP Mode | Whether spanning tree is enabled or disabled on the port. |
| Type | Currently not used. |
| STP State | The forwarding state of the port in the specified spanning tree instance. |
| Port Role | The role of the specified port within the spanning tree. |
| Desc | Whether the port is in loop inconsistent state or not. This field is blank if the loop guard feature is not available. |
The following example shows CLI display output for the command in slot/port format.
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Download EPUB(Extreme 220) (Routing) #show spanning-tree mst port summary 0 0/1
MST Instance ID................................ CST
STP STP Port
Interface Mode Type State Role Desc
--------- -------- ------- ----------------- ---------- ----------
0/1 Enabled Disabled Disabled
The following example shows CLI display output for the command using a LAG interface number.
(Extreme 220) (Routing) #show spanning-tree mst port summary 0 lag 1
MST Instance ID................................ CST
STP STP Port
Interface Mode Type State Role Desc
--------- -------- ------- ----------------- ---------- ----------
3/1 Enabled Disabled Disabled