What is "spanning-tree optimize bpdu transmission". I have this in a bunch of my switches and haven't found a good reference for it. TIA.
The cool feature is that it optimizes bpdu transmission as the name states. However, when enabled it causes high CPU utilization since it runs in software, not hardware.
Cisco decided to disable this feature and hide it from the config. I guess some releases did not hide the command hence a bug was entered against it.
Check Bug CSCee70806 at
"no spanning-tree optimize bpdu transmission" cannot be removed from the "show running" output.
No workaround available
Fixed-in Version: 12.2(25)SE