Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document.
Note: Even the most advanced machine translation cannot match the quality of professional translators.
Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
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.
