Cisco Catalyst 4500 Series - Dtp-4

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Catalyst 4500 Series Switch Cisco IOS System Message Guide
OL-13091-01
Chapter 2 Messages and Recovery Procedures
DTP Messages
Error Message DTP-4-TMRERR:An internal timer error occurred when trunking on
interface [char]
Explanation
Occasionally a timer used by the trunking protocol expires unexpectedly. This problem
is corrected internally.
Recommended Action This problem has no long-term ramifications. However, if further trunking
problems persist, you should reload the device.
Error Message DTP-4-UNKN_ERR:An unknown operational error occurred
Explanation
The system is unable to negotiate trunks because an internal operation generated an
error that the protocol (DTP, in this case) did not expect to handle.
Recommended Action Reload the device.
DTP-5
Error Message DTP-5-ILGLCFG: Illegal config (on, isl--on,dot1q) on <mod/port>
Explanation The two ports on the link are set to the ON mode, but one is set to 802.1Q encapsulation,
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.
Error Message DTP-5-NONTRUNKPORTON:Port [dec]/[chars] has become non-trunk
Explanation
The interface [dec] / [chars] is nontrunked. [dec] / [chars] is the module
number/interface range.
Recommended Action This is an informational message only. No action is required.
Error Message DTP-5-TRUNKPORTCHG:Port [dec]/[chars] has changed from [chars] trunk
to [chars] trunk
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.
Recommended Action This is an informational message only. No action is required.
Error Message DTP-5-TRUNKPORTON:Port [dec]/[chars] has become trunk
Explanation
Interface [dec] / [chars] is trunked. [dec] / [chars] is the module number/interface range.
Recommended Action This is an informational message only. No action is required.