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Troubleshooting Guide

CloudEngine 16800, 12800, 12800E, 8800, 7800, 6800, and 5800 Series Switches

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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).
Common display Commands

Common display Commands

The device provides various display commands to display hardware, interface, and software information. The information helps you locate various faults.

The following table lists the commands used to collect fault information.

Item

Command

Description

Basic information

display diagnostic-information

This command collects basic system information. It displays outputs of multiple display commands, including display device and display current-configuration. Executing this command requires a long time. You can press Ctrl+C to pause diagnosis information display on screen.

Device information

display device

This command checks the status of a board when the board works abnormally. If the Alarm field displays Abnormal, the board is not working properly.

Interface information

display interface

This command displays various information about an interface. You can run this command to check interface connection faults and statistics about discarded packets.

Startup file information display startup This command displays current or next startup version file information.

Versions

display version

This command displays version information about the system software, MPU, and LPU. The version information can help you locate faults.

Patch information

display patch-information

This command displays system patch package information, including patch package version and name. The information can help you locate faults.

Electronic label information

display device elabel

This command displays the electronic label of a board. Electronic labels identify device hardware.

Device status

display health

This command displays information about the temperature, power supply, fan, power, CPU usage, memory usage, and storage medium usage of the device.

Configuration recovery information display configuration recover-result This command displays configuration recovery results after the device startup. According to the results, you can check whether recovery failures occur.

Current configurations

display current-configuration

This command displays all configuration information on a device. You can specify a regular expression to obtain the required configuration information.

Saved configurations

display saved-configuration

If the device has been started and is not working properly, run the display saved-configuration command to check the device startup configuration in the file specified by running the startup saved-configuration or copy startup command.

Run the display saved-configuration last command to check the system configurations saved last time in the configuration file loaded during the current startup.

Time

display clock

This command displays the current system date and time.

NTP clock information display ntp status

This command displays the NTP running status, including the clock synchronization status and clock hierarchy of the local node.

User logs

display logbuffer

This command displays user logs in the log buffer.

Traps

display trapbuffer

This command displays information recorded in the trap buffer.

Memory usage

display memory

This command displays the memory usage of a device.

CPU usage

display cpu

This command displays the CPU usage of a device.

Active/standby switchover status display switchover state

This command displays information about the active/standby switchover. The information helps determine whether the system meets switchover requirements.

Device alarms display alarm active

This command displays current alarm information.

Hardware alarms display device alarm hardware

This command displays hardware alarm information.

Temperature information display device temperature all

This command displays temperature information.

Fan information display device fan

This command displays fan information.

Power supply information display device power

This command displays power supply information.

Route statistics
  • display ip routing-table
  • display ip fib slot slot-id statistics

The two commands display information about routing entries.

IS-IS neighbor information
  • display isis peer
  • display isis interface

The two commands display IS-IS neighbor information.

BGP neighbor information
  • display bgp peer
  • display bgp vpnv4 all brief

The two commands display BGP neighbor information.

BGP route statistics
  • display bgp routing-table statistics
  • display bgp vpnv4 all routing-table statistics

The two commands display information about BGP routing entries.

OSPF neighbor information
  • display ospf peer
  • display ospf interface

The two commands display OSPF neighbor information.

TRILL neighbor information display trill peer This command displays TRILL neighbor information.
MPLS LSP label statistics display mpls lsp statistics This command displays the number of LSPs in Up state.
MPLS LDP session information display mpls ldp session Displays information about sessions between LDP peers.
Multicast neighbor information display pim neighbor

This command displays multicast neighbor information.

Multicast routing table display pim routing-table brief

This command displays multicast routing table information.

Stack member information display stack

This command displays stack member information.

Stack configuration display stack configuration

This command displays the stack configuration.

Stack topology information display stack topology

This command displays stack topology information.

Stack fault information display stack troubleshooting

This command displays stack fault information.

This command is supported since V100R001C00. In versions earlier than V100R002C00, this command is supported in the diagnostic view. In V100R002C00 and later versions, this command is supported in all views.

Interface fault information display interface troubleshooting

This command displays interface fault information.

This command is supported since V100R005C00. In V100R005C00, this command is supported in the diagnostic view. In V100R005C10 and later versions, this command is supported in user view.

BGP fault information display bgp troubleshooting

This command displays BGP fault information.

This command is supported since V100R005C00. In versions earlier than V100R006C00, this command is supported in the diagnostic view. In V100R006C00 and later versions, this command is supported in all views.

Eth-Trunk fault information display eth-trunk troubleshooting

This command displays Eth-Trunk fault information.

This command is supported since V100R005C00. In versions earlier than V100R006C00, this command is supported in the diagnostic view. In V100R006C00 and later versions, this command is supported in all views.

IS-IS fault information display isis troubleshooting

This command displays IS-IS fault information.

This command is supported since V100R005C00. In versions earlier than V100R006C00, this command is supported in the diagnostic view. In V100R006C00 and later versions, this command is supported in all views.

LACP fault information display lacp troubleshooting

This command displays LACP fault information.

This command is supported since V100R005C00. In versions earlier than V100R006C00, this command is supported in the diagnostic view. In V100R006C00 and later versions, this command is supported in all views.

MPLS fault information display mpls ldp troubleshooting

This command displays MPLS fault information.

This command is supported since V100R005C00. In versions earlier than V100R006C00, this command is supported in the diagnostic view. In V100R006C00 and later versions, this command is supported in all views.

OSPF fault information display ospf troubleshooting

This command displays OSPF fault information.

This command is supported since V100R005C00. In versions earlier than V100R006C00, this command is supported in the diagnostic view. In V100R006C00 and later versions, this command is supported in all views.

OSPF IPv6 fault information display ospfv3 troubleshooting

This command displays OSPF IPv6 fault information.

This command is supported since V100R005C00. In versions earlier than V100R006C00, this command is supported in the diagnostic view. In V100R006C00 and later versions, this command is supported in all views.

TRILL fault information display trill troubleshooting

This command displays TRILL fault information.

This command is supported since V100R005C00. In versions earlier than V100R006C00, this command is supported in the diagnostic view. In V100R006C00 and later versions, this command is supported in all views.

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Updated: 2020-01-07

Document ID: EDOC1000060766

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