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CLI – This example shows the STA attributes for port 5.
Console#show spanning-tree ethernet 1/5
Eth
1/ 5 information
--------------------------------------------------------------
Admin Status:
Role:
State:
Admin Path Cost:
Oper Path Cost:
Priority:
Designated Cost:
Designated Port:
Designated Root:
Designated Bridge:
Fast Forwarding:
Forward Transitions:
Admin Edge Port:
Oper Edge Port:
Admin Link Type:
Oper Link Type:
Spanning Tree Status:
Console#
Configuring Interface Settings for STA
You can configure RSTP and MSTP attributes for specific interfaces, including port
priority, path cost, link type, and edge port. You may use a different priority or path
cost for ports of the same media type to indicate the preferred path, link type to
indicate a point-to-point connection or shared-media connection, and edge port to
indicate if the attached device can support fast forwarding. (References to "ports" in
this section means "interfaces," which includes both ports and trunks.)
Command Attributes
The following attributes are read-only and cannot be changed:
• STA State – Displays current state of this port within the Spanning Tree.
(See Displaying Interface Settings for STA on page 3-158 for additional
information.)
- Discarding - Port receives STA configuration messages, but does not forward
packets.
- Learning - Port has transmitted configuration messages for an interval set by
the Forward Delay parameter without receiving contradictory information. Port
address table is cleared, and the port begins learning addresses.
- Forwarding - Port forwards packets, and continues learning addresses.
• Trunk – Indicates if a port is a member of a trunk. (STA Port Configuration only)
Spanning Tree Algorithm Configuration
Enabled
Root
Forwarding
100000
100000
128
0
128.13
32768.00177CF8D8C6
32768.00177CF8D8C6
Disabled
1
Disabled
Disabled
Auto
Point-to-point
Enabled
3
4-223
3-161
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