Cisco Intelligent Gigabit Ethernet Switch Module, Manual

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Chapter 2. Message and Recovery Procedures
17
DTP Messages
This section contains the Dynamic Trunking Protocol (DTP) messages.
DTP-4-MEM_UNAVAIL: Memory was not available to perform the trunk negotiation action.
Explanation This message means that the system is unable to negotiate trunks because of a lack of
memory.
Response Reduce other system activity to ease the memory demands.
DTP-4-TMRERR: An internal timer error occurred when trunking on interface [chars].
Explanation This message means that a timer used by the trunking protocol unexpectedly expired.
[chars] is the trunked interface.
Response This error is internally corrected, and no long-term ramifications exist. However, if more
problems with trunking occur, reload the switch by using the reload privileged EXEC command.
DTP-4-UNKN_ERR: An unknown operational error occurred.
Explanation This message means that the system is unable to negotiate trunks because an internal
operation generated an unexpected error.
Response Reload the switch by using the reload privileged EXEC command.
DTP-5-ILGLCFG: Illegal config (on, isl--on, dot1q) on [chars].
Explanation This message means that one end of the trunk is configured as on , ISL , and the other end
is configured as on , 802.1Q . [chars] is the interface.
Response 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.
DTP-5-NONTRUNKPORTON: Port [chars] has become non-trunk.
Explanation This message means that the interface changed from trunk to access. [chars] is the
interface that changed.
Response This message is provided for information only.
DTP-5-TRUNKPORTCHG: Port [chars] has changed from [chars] trunk to [chars] trunk.
Explanation This message means that the encapsulation type of the trunk has changed. The first [chars]
is the interface, the second [chars] is the original encapsulation type, and the third [chars] is the new
encapsulation type.
Response This message is provided for information only.