Dtp-5 - Cisco Catalyst 4500 Series Message Manual

Chapter 2 Messages and Recovery Procedures
Error Message DTP-4-TMRERR:An internal timer error occurred when trunking on
interface [char]
Error Message DTP-4-UNKN_ERR:An unknown operational error occurred

DTP-5

Error Message DTP-5-ILGLCFG: Illegal config(on,isl--on,dot1q) on <mod/port>
Error Message DTP-5-NONTRUNKPORTON:Port [dec]/[chars] has become non-trunk
Error Message DTP-5-TRUNKPORTCHG:Port [dec]/[chars] has changed from [chars] trunk
to [chars] trunk
Error Message DTP-5-TRUNKPORTON:Port [dec]/[chars] has become trunk
OL-11541-01
Occasionally a timer used by the trunking protocol expires unexpectedly. This problem
Explanation
is corrected internally.
This problem has no long-term ramifications. However, if further trunking
Recommended Action
problems persist, you should reload the device.
The system is unable to negotiate trunks because an internal operation generated an
Explanation
error that the protocol (DTP, in this case) did not expect to handle.
Recommended Action Reload the device.
The two ports on the link are set to the ON mode, but one is set to 802.1Q encapsulation,
Explanation
while the other is set to ISL encapsulation. When both ports on a link are set to the ON mode, their
encapsulation types must match.
Recommended Action Configure both ports on the link to have the same encapsulation type.
The interface [dec] / [chars] is nontrunked. [dec] / [chars] is the module
Explanation
number/interface range.
Recommended Action This is an informational message only. No action is required.
Explanation The encapsulation type of the trunk changed. [dec] is the module number, the first
[chars] is the interface number, the second [chars] is the original encapsulation type, and the third
[chars] is the new encapsulation type.
This is an informational message only. No action is required.
Recommended Action
Interface [dec] / [chars] is trunked. [dec] / [chars] is the module number/interface range.
Explanation
This is an informational message only. No action is required.
Recommended Action
Catalyst 4500 Series Switch Cisco IOS System Message Guide Release 12.2(31)SGA
DTP Messages
2-27