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Cisco Catalyst Switch Module 3110 and 3012 for IBM BladeCenter System Message Guide
OL-12191-01
Chapter 2 Message and Recovery Procedures
DTP Messages
Error Message
DTP-4-TMRERR: An internal timer error occurred when trunking on
interface [chars].
Explanation
A timer used by the trunking protocol unexpectedly expired. [chars] is the trunked
interface.
Recommended Action
This problem is corrected internally and has no long-term ramifications.
However, if more problems with trunking occur, reload the switch by using the
reload
privileged
EXEC command.
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
unexpected error.
Recommended Action
Reload the switch by using the
reload
privileged EXEC command.
Error Message
DTP-5-DOMAINMISMATCH: Unable to perform trunk negotiation on port
[chars] because of VTP domain mismatch.
Explanation
The two ports in the trunk negotiation belong to different VTP domains. Trunking can
be configured only when the ports belong to the same VTP domain. [chars] is the port number.
Recommended Action
Ensure that the ports in the trunk negotiation belong to the same VTP domain.
Error Message
DTP-5-ILGLCFG: Illegal config (on, isl--on,dot1q) on [chars].
Explanation
One end of the trunk link is configured as
on
with ISL encapsulation and the other end
is configured as
on
with IEEE 802.1Q encapsulation. [chars] is the interface.
Recommended Action
This configuration is illegal and will not establish a trunk between two
switches. You must change the encapsulation type so that both ends of the trunk match.
Error Message
DTP-5-NONTRUNKPORTON: Port [chars] has become non-trunk.
Explanation
The interface changed from a trunk port to an access port. [chars] is the interface that
changed.
Recommended Action
This message is provided for information only.
Error Message
DTP-5-TRUNKPORTCHG: Port [chars] has changed from [chars] trunk to
[chars] trunk.
Explanation
The encapsulation type of the trunk port has changed. The first [chars] is the interface,
the second is the original encapsulation type, and the third [chars] is the new encapsulation type.
Recommended Action
This message is provided for information only.