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Pports That are Disabled, or Ports that Received A BPDU Before Forming a LAG are shown in the output of "show spantree stats active"

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TitlePports That are Disabled, or Ports that Received A BPDU Before Forming a LAG are shown in the output of "show spantree stats active"
Symptoms
A disabled port is shown in the output of "show spantree stats active"
The command shows active spanning tree ports but some may not be currently active and not processing bpdus

 
AG_DSC1(su)->show spantree stats port lag.0.4

Spanning tree status - enabled
Spanning tree instance - 0
Designated Root MacAddr - 00-01-f4-5b-66-43
Designated Root Priority - 4096
Designated Root Cost - 15000
Designated Root Port - lag.0.6 --------- OK
Root Max Age - 20 sec
Root Hello Time - 2 sec
Root Forward Delay - 15 sec
Bridge ID MAC Address - 00-01-f4-5b-66-8f
Bridge ID Priority - 8192
Bridge Max Age - 20 sec
Bridge Hello Time - 2 sec
Bridge Forward Delay - 15 sec
Topology Change Count - 17
Time Since Top Change - 12 days 05:01:26
Max Hops - 20

SID Port State Role Cost Priority
--- ---------- ---------------- ----------- -------- --------
0 lag.0.4 Blocking Disabled 2000000 128

 
Environment
N-Series
S-Series
K-Series
Securestack 

 
Cause
Functioning as designed 
Resolution
This is expected behavour.
The command shows any port that has sent a bpdu since the switch booted, regardless of whether it is actually spanningtree active at this time or not
Note that the Role=Disabled in the output of the command. This tells you that it does not have a link at this time.
Additional notes
Ports that receive a BPDU before forming a LAG will display the physical port and the LAG port simultaneously. Results may vary among ports depending on whether a BPDU was received before the LAG formed.  For instance, if one port in a   LAG is disconnected and connected after the  LAG is formed that port will not display in the output but any port  connected which received a BPDU will display.

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