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Catalyst 3750-X, 3750-E, 3560-X, and 3560-E Switch System Message Guide
OL-9772-05
Chapter 2 Message and Recovery Procedures
SPANTREE Messages
Error Message
SPAN-3-UNKN_ERR_PORT: An internal error occurred when configuring SPAN
on port [chars].
Explanation
SPAN detected an error in its internal operation. [chars] is the interface.
Recommended Action
The error might be transient. Try the SPAN operation again. If the second
attempt also fails, reload the switch by using the
reload
privileged EXEC command to complete the
operation.
SPANTREE Messages
Error Message
SPANTREE-2-BLOCK_BPDUGUARD: Received BPDU on port [chars] with BPDU
Guard enabled. Disabling port.
Explanation
A BPDU was received on an interface that has the spanning tree BPDU guard feature
enabled. As a result, the interface was administratively shut down. [chars] is the interface name.
Recommended Action
Either remove the device sending BPDUs, or disable the BPDU guard feature.
The BPDU guard feature can be locally configured on the interface or globally configured on all
ports that have PortFast enabled. To disable BPDU guard on an interface, use the
no spanning-tree
bpduguard enable
interface configuration command. To disable BPDU guard globally, use the
no
spanning-tree portfast bpduguard default
global configuration command. After you have
removed the device or disabled BPDU guard, re-enable the interface by entering the
no shutdown
interface configuration command.
Error Message
SPANTREE-2-BLOCK_BPDUGUARD_VP: Received BPDU on port [chars], vlan
[dec] with BPDU Guard enabled. Disabling vlan.
Explanation
A BPDU was received on the interface and the VLAN. The spanning tree BPDU guard
feature was enabled and configured to shut down the VLAN. The VLAN was error disabled. [chars]
is the interface, and [dec] is the VLAN.
Recommended Action
Either remove the device sending BPDUs, or disable the BPDU guard feature.
The BPDU guard feature can be configured locally on the interface or globally on all ports that have
Port Fast enabled. To re-enable the interface and the VLAN, use the
clear errdisable
privileged
EXEC command.
Error Message
SPANTREE-2-BLOCK_PVID_LOCAL: Blocking [chars] on [chars]. Inconsistent
local vlan.
Explanation
The spanning-tree port associated with the listed spanning-tree instance and interface
will be held in the spanning-tree blocking state until the port VLAN ID (PVID) inconsistency is
resolved. The listed spanning-tree instance is that of the native VLAN ID of the listed interface. The
first [chars] is the interface, and the second [chars] is the spanning-tree instance.
Recommended Action
Verify that the configuration of the native VLAN ID is consistent on the
interfaces on each end of the 802.1Q trunk connection. When corrected, spanning tree automatically
unblocks the interfaces, as appropriate.
Summary of Contents for Catalyst 3560-E Series
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