Enterasys SecureStack C2 Configuration Manual page 277

Syntax
show spantree nonforwardingreason port-string [sid sid]
Parameters
port‐string
sid sid
Defaults
If no port‐string is specified, non‐forwarding reason is displayed for all ports.
If no SID is specified, SID 0 is assumed.
Mode
Switch command, read‐only.
Usage
Exceptional conditions causing a port to be placed in listening or blocking state include a Loop
Protect event, receipt of disputed BPDUs, and loopback detection.
Example
This example shows how to display the non‐forwarding reason on
C2(rw)->show spantree nonforwardingreason port ge.1.1
The non-forwarding reason for port ge.1.1
Specifies port(s) for which to display the non‐forwarding reason.
(Optional) Specifies the specific Spanning Tree(s) for which to display
the non‐forwarding reason. Valid values are 0 ‐ 4094. If not specified,
SID 0 is assumed.
show spantree nonforwardingreason
.1.1:
ge
on SID 0 is None
SecureStack C2 Configuration Guide 7-51