Hello protocolfan,

Do you have an STP extensions?

@DELL-Sam L​ Hi Sam,

I don't know enough to understand your question ... how would I determine whether or not I have enabled any STP extensions on this switch?

I am poking through the output of 'show spanning-tree' commands ...

switch# show spanning-tree detail
Spanning tree enabled protocol rapid-pvst with force-version rstp
VLAN 4000
Root Identifier has priority 36768, Address c45a.b178.0085
Root Bridge hello time 2, max age 20, forward delay 15
Bridge Identifier has priority 36768, Address c45a.b178.0085 
Configured hello time 2, max age 20, forward delay 15
We are the root of VLAN 4000
Flush Interval 200 centi-sec, Flush Invocations 0
Flush Indication threshold 5
Current root has priority 36768, Address c45a.b178.0085
Number of topology changes 0
VLAN 4089
Root Identifier has priority 36857, Address c45a.b178.0085
Root Bridge hello time 2, max age 20, forward delay 15
Bridge Identifier has priority 36857, Address c45a.b178.0085 
Configured hello time 2, max age 20, forward delay 15
We are the root of VLAN 4089
Flush Interval 200 centi-sec, Flush Invocations 216
Flush Indication threshold 5
Current root has priority 36857, Address c45a.b178.0085
Number of topology changes 0
switch# 

switch# show spanning-tree interface ethernet 1/1/31:1
switch# 

--sk

Hello protocolfan,

It would be best to open a support case so that we can look into this.

We have done so

--sk