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MSTP/4/MSTPLOG_PROROOT_CHANGED
Message
MSTP/4/MSTPLOG_PROROOT_CHANGED:The root bridge of MSTP process changed. (ProcessID=[ProcessID], InstanceID=[InstanceID], RootPortName=[PortName], PreviousRootBridgeID=[PreRootBridgeID], NewRootBridgeID=[NewRootBridgeID], RootPwName=[PwName] PreTimeVector: Hello=[PreHello], MessageAge=[PreMessAge], Fwdly=[PreFwdly], RemainingHops=[PreMessHop], NewTimeVector: Hello=[NewHello], MessageAge=[NewMessAge], Fwdly=[NewFwdly], RemainingHops=[NewMessHop])
Parameters
| Parameter Name | Parameter Meaning |
|---|---|
| ProcessID | Indicates the ID of an MSTP process. |
| InstanceID | Indicates the instance ID. |
| RootPortName | Indicates the name of the root port. |
| PreviousRootBridgeID | Indicates the bridge ID of the previous root bridge. |
| NewRootBridgeID | Indicates the ID of the new root bridge. |
| RootPwName | Indicates the PW name as the root port. |
| PreTimeVector | Indicates the time before the root bridge changed. |
| PreHello | Indicates the time of the Hello Timer before the root bridge changed. |
| PreMessAge | Indicates the aging time of the information before the root bridge changed. |
| PreFwdly | Indicates the forwarding delay timer before the root bridge changed. |
| PreMessHop | Indicates the number of hops of the spanning tree before the root bridge changed. |
| NewTimeVector | Indicates the time after the root bridge changed. |
| NewHello | Indicates the time of the Hello Timer after the root bridge changed. |
| NewMessAge | Indicates the aging time of the information after the root bridge changed. |
| NewFwdly | Indicates the forwarding delay timer after the root bridge changed. |
| NewMessHop | Indicates the number of hops of the spanning tree after the root bridge changed. |
Possible Causes
Cause 1: A new device, which had the optimal bridge ID, was added.
Cause 2: The priorities of the devices or the domain configuration on the current network were modified.
Procedure
- Cause 1: A new device, which had the optimal bridge ID,
was added.
- Cause 2: The priorities of the devices or the domain configuration
on the current network were modified.
- Run the display stp [ process process-id ] [ instance instance-id ] [ interface interface-type interface-number | slot slot-id ] [ brief ] command to check whether the operation of changing the vectors of the instance or the domain configuration is correct. If the operation is incorrect, go to Step 2.
- Correctly configure the device according to the topology, and then check whether the alarm is cleared. If the alarm persists, go to Step 3.
- Collect trap, log, and configuration information, and contact technical support personnel.
