Cabletron Systems SmartSwitch Router Reference Manual page 183

-STP-E-PORTNO port no '<port_number>' is invalid
Explanation:
This message appears when the port number is invalid.
Recommended Action:
The port number is currently unavailable on the system.
-STP-E-STRTTIMER error starting '<stp>' timer - error=<error_code>
Explanation:
This message appears when the STP timer could not be started.
Recommended Action:
The STP timer was not created and therefore could not be started.
-STP-E-TIMER error creating '<stp>' timer - error=<error_code>
Explanation:
This message appears when an STP timer could not be created.
Recommended Action:
The error could be due to lack of resources (-32) or an invalid parameter was passed to
the timer creation routine (-13).
-STP-E-XMTQFULL unable to send frame xmit queue full
Explanation:
This message appears when the STP BPDUs could not be sent.
Recommended Action:
This could be because transmit queue is full or there is indication that the STP frame
is to be dropped.
SSR-8 Error Reference Manual
Chapter 28: STP Error Messages
28 - 3