Configuring Spanning Tree Bridge Parameters
This example shows how to display port‐specific Spanning Tree information for port ge.1.1.
Table
6‐2 describes the port‐specific information displayed.
Matrix(rw)->show spantree stats port ge.1.1
Spanning tree status
Spanning tree instance
Designated Root MacAddr
Designated Root Priority
Designated Root Cost
Designated Root Port
Root Max Age
Root Hello Time
Root Forward Delay
Bridge ID MAC Address
Bridge ID Priority
Bridge Max Age
Bridge Hello Time
Bridge Forward Delay
Topology Change Count
Time Since Top Change
Max Hops
SID
---
0
Table 6-2 Port-Specific show spantree stats Output Details
Output...
SID
Port
State
Role
Cost
Priority
6-8 Spanning Tree Configuration
Port
State
----------
----------------
ge.1.1
Blocking
What it displays...
The Spanning Tree instance.
The port name.
The Spanning Tree forwarding state of the port. This value can be Blocking,
Forwarding, Listening, or Learning. If the port/SID has been placed in a non-
forwarding state for a reason other than normal Spanning Tree protocol
operation, an asterisk will be displayed next to the state. You can use the
spantree nonforwardingreason
nonforwardingreason" on page 6-77) to display the specific reason.
The Spanning Tree role of the port. The port role is assigned by the Spanning
Tree protocol and determines the behavior of the port — either sending or
receiving BPDUs, and forwarding or blocking data traffic.
The port cost.
The priority of the link in a Spanning Tree bridge. This value can be set with the
set spantree portpri
- enabled
- 0
- 00-e0-63-93-79-0f
- 0
- 0
- 0
- 20 sec
- 2
sec
- 15 sec
- 00-e0-63-93-79-0f
- 0
- 20 sec
- 2
sec
- 15 sec
- 5
- 00 days 03:16:54
- 20
Role
-----------
Disabled
command
command
("set spantree
show spantree stats
Cost
Priority
--------
--------
20000
128
("show spantree
portpri" on page 6-55).
show
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