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S7700 V200R019C10 Log Reference

This document provides the explanations, causes, and recommended actions of logs on the product.

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VBST

VBST

VBST/4/BPDUPROTECT

Message

VBST/4/BPDUPROTECT: This edged-port [port-name] that enabled BPDU-Protection will be shutdown, because it received BPDU packet.

Description

The edge port enabled BPDU protection received BPDUs and was shut down.

Parameters

Parameter Name Parameter Meaning
[port-name] Indicates the name of edge port.

Possible Causes

The edge port received BPDUs, and BPDU protection was enabled globally.

Procedure

  1. Check whether the interface is directly connected to a user terminal and can be specified as an edge port.

    • If the interface is directly connected to a user terminal and therefore can be specified as an edge port, go to Step 2.
    • If the interface is indirectly connected to a user terminal and therefore cannot be specified as an edge port, go to Step 3.

  2. Locate the source of the BPDUs on the interface and check whether the malicious attack exists.

    • If the malicious attack exists, go to Step 4.
    • If the malicious attack does not exist, go to Step 3.

  3. Run the undo stp edged-port and undo shutdown commands in the interface view to delete the configuration of the edge port and restart the interface. Then, check whether the log persists. If the log persists, go to Step 4.
  4. Collect trap, log, and configuration information, and contact technical support personnel.

VBST/4/EDGEPORT

Message

VBST/4/EDGEPORT: Edged-port [port-name] received BPDU packet, then the active state of the edged-port will be disabled.

Description

The edge port lost the attributes of an edge port after receiving BPDUs.

Parameters

Parameter Name Parameter Meaning
[port-name] Indicates the name of edge port.

Possible Causes

The edge port received BPDUs.

Procedure

  1. Check whether the interface is directly connected to a user terminal and can be specified as an edge port.

    • If the interface is directly connected to a user terminal and therefore can be specified as an edge port, go to Step 2.
    • If the interface is indirectly connected to a user terminal and therefore cannot be specified as an edge port, go to Step 3.

  2. Locate the source of the BPDUs on the interface and check whether the malicious attack exists.

    • If the malicious attack exists, go to Step 4.
    • If the malicious attack does not exist, go to Step 3.

  3. Run the undo stp edged-port command and the undo shutdown command in the interface view to delete the configuration of the edge port and restart the interface. Then, check whether the log persists. If the log persists, go to Step 4.
  4. Collect trap, log, and configuration information, and contact technical support personnel.

VBST/5/HACOMPLETE

Message

VBST/5/HACOMPLETE: VBST batch backup is complete.

Description

VBST configuration backup is complete.

Parameters

Parameter Name Parameter Meaning

None

None

Possible Causes

The active MPU completes backing up the VBST configuration to the standby MPU.

Procedure

  1. This message is informational only and no action is required.

VBST/5/HASTART

Message

VBST/5/HASTART: VBST batch backup starts.

Description

VBST configuration backup starts.

Parameters

Parameter Name Parameter Meaning
None None

Possible Causes

The active MPU starts to back up the VBST configuration to the standby MPU.

Procedure

  1. This message is informational only and no action is required.

VBST/4/LOOPDETECT

Message

VBST/4/LOOPDETECT: In VBST VLAN [ULONG], the port [STRING] was blocked because it received the VBST packets sent by itself.

Description

When the port detected loopback, block the port.

Parameters

Parameter Name Parameter Meaning
[ULONG] VLAN ID.
[STRING] Indicates the port name.

Possible Causes

The VBST port of the equipment detected a loopback.

Procedure

  1. Check whether a local loopback is configured on the interface where the log is generated.

    • If a local loopback is configured on the interface where the log is generated, go to Step 3.
    • If no local loopback is configured on the interface where the log is generated, go to Step 2.

  2. Check whether a loop is formed by a hub and devices, one of which is connected to the interface.

    • If a loop is formed by a hub and devices, one of which is connected to the interface, go to Step 4.
    • If no loop is formed by a hub and devices, one of which is connected to the interface, go to Step 5.

  3. Run the undo loopback command to delete the local loopback configuration, and check whether the log persists. If the log persists, go to Step 5.
  4. Remove the self-loop network cable from the hub and check whether the log persists. If the log persists, go to Step 5.
  5. Collect trap, log, and configuration information, and contact technical support personnel.

VBST/4/LOOPPROTECT

Message

VBST/4/LOOPPROTECT: VBST VLAN [vlan-id]'s LOOP-Protection port [port-name] did not receive message in prescriptive time.

Description

The root port or alternate port in the VLAN enabled VBST and loop protection did not receive BPDUs within the specified time.

Parameters

Parameter Name Parameter Meaning
[vlan-id] Indicates the VLAN ID.
[port-name] Indicates the port name.

Possible Causes

Cause 1: The VBST function was disabled on the peer device.

Cause 2: The links connected to the peer were congested.

Procedure

  1. Cause 1: The VBST function was disabled on the peer device.
    1. Run the display stp [ vlan vlan-id ] [ interface interface-type interface-number | slot slot-id ] [ brief ] command to check whether VBST is disabled on the interfaces that are directly connected.

      • If VBST is disabled on the interfaces that are directly connected, go to Step 2.
      • If VBST is enabled on the interfaces that are directly connected, go to Step 3.

    2. Run the stp vlan vlan-id1 enable command in the interface view to enable VBST. Then, check whether the log persists. If the log persists, go to Step 3.
    3. Collect trap, log, and configuration information, and contact technical support personnel.
  2. Cause 2: The links connected to the peer were congested.
    1. Check whether the link is congested between the local device and the neighbor device.

      • If the link is congested, go to Step 2.
      • If the link is not congested, go to Step 3.

    2. Repair the physical link and then check whether the log persists. If the log persists, go to Step 3.
    3. Collect trap, log, and configuration information, and contact technical support personnel.

VBST/6/PORTDISCARD

Message

VBST/6/PORTDISCARD: In VBST VLAN [vlan-id], VBST set port [port-name] state as discarding.

Description

The port in the VLAN enabled VBST entered the discarding state.

Parameters

Parameter Name Parameter Meaning
[vlan-id] Indicates the VLAN ID.
[port-name] Indicates the port name.

Possible Causes

The network topology changed.

Procedure

  1. View physical devices on the network to check whether a new physical link that has VBST enabled is added.

    • If a new physical link that has VBST enabled is added, go to Step 2.
    • If no new physical link that has VBST enabled is added, go to Step 3.

  2. Check whether the added physical link is necessary.

    • If the added physical link is necessary, go to Step 3.
    • If the added physical link is unnecessary, go to Step 4.

  3. Run the display stp [ vlan vlan-id ] [ interface interface-type interface-number | slot slot-id ] [ brief ] command to check whether the interfaces are consistent with the VBST calculation results.

    • If the interfaces are consistent with the VBST calculation results, no action is required.
    • If the interfaces are inconsistent with the VBST calculation results, go to Step 5.

  4. Correctly deploy the network topology, and then check whether the log persists. If the log persists, go to Step 5.
  5. Collect trap, log, and configuration information, and contact technical support personnel.

VBST/6/PORTFORWARD

Message

VBST/6/PORTFORWARD: In VBST VLAN [vlan-id], VBST set port [port-name] state as forwarding.

Description

The port in the VLAN enabled VBST entered the forwarding state.

Parameters

Parameter Name Parameter Meaning
[vlan-id] Indicates the VLAN ID.
[port-name] Indicates the port name.

Possible Causes

The network topology changed.

Procedure

  1. View physical devices on the network to check whether a new physical link that has VBST enabled is added.

    • If a new physical link that has VBST enabled is added, go to Step 2.
    • If no new physical link that has VBST enabled is added, go to Step 3.

  2. Check whether the added physical link is necessary.

    • If the added physical link is necessary, go to Step 3.
    • If the added physical link is unnecessary, go to Step 4.

  3. Run the display stp [ vlan vlan-id ] [ interface interface-type interface-number | slot slot-id ] [ brief ] command to check whether the interfaces are consistent with the VBST calculation results.

    • If the interfaces are consistent with the VBST calculation results, no action is required.
    • If the interfaces are inconsistent with the VBST calculation results, go to Step 5.

  4. Correctly deploy the network topology, and then check whether the log persists. If the log persists, go to Step 5.
  5. Collect trap, log, and configuration information, and contact technical support personnel.

VBST/6/PORTLEARNING

Message

VBST/6/PORTLEARNING: In VBST VLAN [vlan-id], VBST set port [port-name] state as learning.

Description

The port in the VLAN enabled VBST entered the learning state.

Parameters

Parameter Name Parameter Meaning
[vlan-id] Indicates the VLAN ID.
[port-name] Indicates the port name.

Possible Causes

The forward delay timer expired.

Procedure

  1. The log is informational only, and no action is required.

VBST/4/PVIDERR

Message

VBST/4/PVIDERR: In VBST VLAN [ULONG], the port [STRING]'s PVID is inconsistent with remote port.

Description

PVIDs of directly connected ports in VBST are different.

Parameters

Parameter Name Parameter Meaning
[ULONG] Indicates conflicting PVIDs.
[STRING] Indicates the port name and number.

Possible Causes

PVIDs of directly connected ports are different.

Procedure

  1. Run the display stp brief command to check whether a port PVID conflict is detected.

    • If so, re-plan and configure PVIDs for directly connected ports.
    • If not, go to step 2.

  2. Collect trap, log, and configuration information, and contact technical support personnel.

VBST/4/PVIDRECOVERY

Message

VBST/4/PVIDRECOVERY: In VBST VLAN [ULONG], the PVID-inconsistency state on port [STRING] is cleared.

Description

The PVID inconsistency state between directly connected ports in VBST is recovered.

Parameters

Parameter Name Parameter Meaning
[ULONG] Indicates conflicting PVIDs.
[STRING] Indicates the port name and number.

Possible Causes

The PVID inconsistency state between directly connected ports is recovered.

Procedure

  1. This log message is informational only, and no action is required.

VBST/6/RCVDTC

Message

VBST/6/RCVDTC: VBST received BPDU with TC, VBST VLAN [vlan-id], port name is [port-name].

Description

VBST received the BPDU with a TC flag.

Parameters

Parameter Name Parameter Meaning
[vlan-id] Indicates the VLAN ID.
[port-name] Indicates the port name.

Possible Causes

The network topology changed.

Procedure

  1. View physical devices on the network to check whether a new physical link that has VBST enabled is added.

    • If a new physical link that has VBST enabled is added, go to Step 2.
    • If no new physical link that has VBST enabled is added, go to Step 3.

  2. Check whether the added physical link is necessary.

    • If the added physical link is necessary, go to Step 3.
    • If the added physical link is unnecessary, go to Step 4.

  3. Run the display stp [ vlan vlan-id ] [ interface interface-type interface-number | slot slot-id ] [ brief ] command to check whether the interfaces are consistent with the VBST calculation results.

    • If the interfaces are consistent with the VBST calculation results, no action is required.
    • If the interfaces are inconsistent with the VBST calculation results, go to Step 5.

  4. Correctly deploy the network topology, and then check whether the log persists. If the log persists, go to Step 5.
  5. Collect trap, log, and configuration information, and contact technical support personnel.

VBST/5/ROOTCHANGE

Message

VBST/5/ROOTCHANGE: This bridge is no longer the root bridge of the VBST VLAN [vlan-id].

Description

The root bridge in the VLAN enabled VBST changed.

Parameters

Parameter Name Parameter Meaning
[vlan-id] Indicates the VLAN ID.

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

  1. Cause 1: A new device, which had the optimal bridge ID, was added.
    1. Check whether the added physical link is required.

      • If the added physical link is necessary, go to Step 2.
      • If the added physical link is unnecessary, go to Step 3.

    2. Run the display stp [ vlan vlan-id ] [ interface interface-type interface-number | slot slot-id ] [ brief ] command to check whether the interfaces are consistent with the VBST calculation results.

      • If the interfaces are consistent with the VBST calculation results, no action is required.
      • If the interfaces are inconsistent with the VBST calculation results, go to Step 4.

    3. Correctly deploy the network topology, and then check whether the log persists. If the log persists, go to Step 4.
    4. Collect trap, log, and configuration information, and contact technical support personnel.
  2. Cause 2: The priorities of the devices or the domain configuration on the current network were modified.
    1. Run the display stp [ vlan vlan-id ] [ interface interface-type interface-number | slot slot-id ] [ brief ] command to check whether the operation of changing the priority is correct in the network topology.

      • If the operation is correct, no action is required.
      • If the operation is incorrect, go to Step 2.

    2. Run the stp vlan vlan-id priority priority command to reset the priority of the local bridge as required. Alternatively, run the undo stp vlan vlan-id priority command or the undo stp vlan vlan-id root command to restore the default value of the priority of the local bridge. Check whether the log persists. If the log persists, go to Step 3.
    3. Collect trap, log, and configuration information, and contact technical support personnel.

VBST/5/SMOOTHSTART

Message

VBST/5/SMOOTHSTART: VBST smooth starts.

Description

VBST data smoothing starts.

Parameters

Parameter Name Parameter Meaning
None None

Possible Causes

After an active/standby switchover is complete, VBST data on the LPU starts to be synchronized to the new MPU.

Procedure

  1. This message is informational only and no action is required.

VBST/5/SMOOTHCOMPLETE

Message

VBST/5/SMOOTHCOMPLETE: VBST smooth is complete.

Description

VBST data smoothing is complete.

Parameters

Parameter Name Parameter Meaning
None None

Possible Causes

After an active/standby switchover is complete, synchronizing VBST data on the LPU to the new MPU is complete.

Procedure

  1. This message is informational only and no action is required.

VBST/3/VLANERR

Message

VBST/3/VLANERR: Because the limit of STP instances is exceeded, VLAN: [vlan-id] failed to enable.

Description

When VBST is enabled in VLANs in a batch, the VLANs where VBST fails to be enabled are recorded.

Parameters

Parameter Name Parameter Meaning
[vlan-id] VLAN ID.

Possible Causes

There are limitations on VLAN specifications. When VBST is enabled in VLANs in a batch, VBST fail to be enabled in some VLANs.

Procedure

  1. Run the display stp brief command to check the VLANs where VBST is enabled. Check whether the number of VLANs exceeds the specifications.

    If the number of VLANs does not exceed the specifications, go to step 2.

  2. Collect traps, logs, and configuration, and contact technical support personnel.
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Updated: 2022-01-25

Document ID: EDOC1100126883

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