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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
SPANTREE Messages
Error Message
SPANTREE-2-ROOTGUARD_CONFIG_CHANGE: Root guard [chars] on port [chars]
on [chars].
Explanation
The spanning-tree root guard configuration for the listed interface has changed. If
enabled, any BPDU received on this interface that advertises a superior spanning-tree root bridge
(lower bridge ID, lower path cost, and so forth) to that already in use causes the interface to be put
into the blocking state and marked as
root-guard inconsistent
. The first [chars] is the root-guard state
(
enable
or
disable
), the second [chars] is the interface, and the third [chars] is the spanning-tree
instance.
Recommended Action
Verify that this is the desired configuration for the listed interface. Correct it if
it is not the desired configuration; otherwise, no action is required.
Error Message
SPANTREE-2-ROOTGUARD_UNBLOCK: Root guard unblocking port [chars] on
[chars].
Explanation
The listed interface is no longer receiving BPDUs advertising a superior root bridge
(lower bridge ID, lower path cost, and so forth). The root-guard inconsistency is cleared for the
interface, and the blocking state is removed from the interface. The first [chars] is the port name,
and the second [chars] is the spanning-tree mode displayed in
show spanning-tree
privileged EXEC
command.
Recommended Action
No action is required.
Error Message
SPANTREE-2-UNBLOCK_CONSIST_PORT: Unblocking [chars] on [chars]. Port
consistency restored.
Explanation
The port VLAN ID or port type inconsistencies have been resolved, and spanning tree
will unblock the listed interface of the listed spanning-tree instance as appropriate. The first [chars]
is the interface, and the second [chars] is the spanning-tree instance.
Recommended Action
No action is required.
