Basic 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

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

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

Versions

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

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

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

Device status

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

Current configurations

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

Saved configurations

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

This command displays the current system date and time.

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

User logs

This command displays user logs in the log buffer.

Traps

This command displays information recorded in the trap buffer.

Memory usage

This command displays the memory usage of a device.

CPU usage

This command displays the CPU usage of a device.

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

This command displays current alarm information.

This command displays hardware alarm information.

This command displays temperature information.

This command displays fan information.

This command displays power supply information.

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

The two commands display information about routing entries.

• display isis peer
• display isis interface

The two commands display IS-IS neighbor information.

• display bgp peer
• display bgp vpnv4 all brief

The two commands display BGP neighbor information.

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

The two commands display information about BGP routing entries.

• display ospf peer
• display ospf interface

The two commands display OSPF neighbor information.

This command displays multicast neighbor information.

This command displays multicast routing table information.

This command displays stack member information.

This command displays the stack configuration.

This command displays stack topology information.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.