Start Demo

ExtraHop Command-line Reference

You can manage many administrative tasks on your ExtraHop system through a command-line interface (CLI). You will typically manage your ExtraHop system with the CLI when you connect from the USB connection on the appliance with a keyboard and monitor or when you connect through the IDRAC interface.

This reference provides information about accessing the CLI and a list of all available ExtraHop commands and sub-commands.

Authorization and access

You can log in to the CLI from the ExtraHop Administration settings or through a secure shell (SSH) terminal application. While you can run basic commands when logged in as any user with unlimited privileges, you must have the password for the setup user account to run advanced commands.

Connect to the CLI through the ExtraHop Administration settings

The ExtraHop Web Shell is only available on Discover and Command appliances.
  1. Log in to the Administration settings on your ExtraHop system with an account that has unlimited privileges.
  2. Click Launch Shell in the top right corner.
    A terminal window appears with a prompt that specifies the ExtraHop system hostname. You are automatically logged in and can begin typing commands at the prompt.
    Note:You must type commands into the Web Shell interface. Copy and paste actions are not available.

Connect to the CLI through SSH

  1. Open a secure shell (SSH) terminal application.
  2. Type a command similar to the following example, substituting example-extrahop.com with the hostname or IP address of your ExtraHop system. 
    $ ssh shell@example-extrahop.com
  3. When prompted, type the password for the shell user account and then press ENTER.
After you connect, you can begin typing commands. Type a question mark (?) at the prompt to display a list of available commands. Type any command name followed by a question mark to show sub-commands, such as show ?.

Command modes

Commands are available in privileged and non-privileged mode. Any user with unlimited privileges can access non-privileged commands, however the setup user account password is required to access privileged commands.

Non-privileged commands
These four commands require that you log in with a user account that has unlimited privileges.
enable
Enables privileged commands. When this command is executed, you are prompted for the setup user account password.
ping
Sends a ping request to a specified device.
show
Displays the ExtraHop system configuration settings in view-only mode.
traceroute
Sends a traceroute request to a specified device.
Privileged commands
The following commands require the setup user account password.
configure
Enables configuration mode.
delete
Allows delete operations.
disable
Disables privileged mode.
enable
Enables privileged mode.
ping
Sends a ping request.
reload
Allows reload services operations.
reset
Allows reset services operations.
restart
Allows restart services operations.
show
Shows the current system configuration settings.
shutdown
Shuts down the ExtraHop system.
stop
Stops ExtraHop services.
support
Enables (or disables) the ExtraHop Support account.
traceroute
Sends a traceroute request.

configure

Puts the ExtraHop system into Configuration mode. After the configure command executes and the system is in Configuration mode, you can pass in any of the sub-commands listed below.

Syntax

extrahop#configure

Example

The following command sequence opens Configuration mode, enables the interface subcommands, sets a static IP address, DNS servers, and hostname for interface 2 on the ExtraHop system, and then exits Configuration mode:

extrahop#configure
extrahop(config)#interface 2
extrahop(config-if)#ip ipaddr <ipaddr> <netmask> <gateway>
extrahop(config-if)#ip dnsservers <ipaddr> <ipaddr 2>
extrahop(config-if)#ip hostname <name>
extrahop(config-if)#exit
extrahop(config)#exit

The configure command supports the following sub-commands:

diagnostics

Downloads and executes a signed diagnostics script.

Syntax

extrahop#configure
extrahop(config)#diagnostics <URI>

Parameters

URI
URI. Specifies the URI of a downloaded diagnostic script from ExtraHop Support to run on the ExtraHop system.

disk_cleanup

Frees disk space by compressing and deleting large ExtraHop log files. It is not necessary to run this command unless instructed to do so by ExtraHop Support. However, you can run this command at any time.

Syntax

extrahop#configure
extrahop(config)#disk_cleanup

dnsservers

Specifies the primary and secondary DNS servers.

Syntax

extrahop(config)#dnsservers <primary addr> <secondary addr>

Parameters

dnsservers
Configures the system DNS servers.
primary addr
Specifies the primary IP address of the DNS server.
secondary addr
Specifies the secondary IP address of the DNS server. This parameter is optional.

eula_reset

Reset the POC and EULA/TOS license agreements. Note that this command is intended for ExtraHop Support only.

Syntax

extrahop#configure
extrahop(config)#eula_reset

hostname

Specifies the system hostname for the ExtraHop system.

Syntax

extrahop(config)#hostname <name>

Parameters

hostname
Configures the system hostname.
name
Specifies the fully qualified domain name (FQDN) of the ExtraHop system.

install

Retrieves and uploads a firmware update from ExtraHop.

Syntax

extrahop#configure
extrahop(config)#install <uri>

Parameters

URI
Specifies the URI of a firmware update from ExtraHop Support that is uploaded to the ExtraHop system.

interface

Puts the CLI in Interface mode and provides sub-commands to specify how the ExtraHop system acquires an IP address and the hostname.

Syntax

extrahop#configure
extrahop(config)#interface <interface-number>
extrahop(config-if)#ip ipaddr <addr> <netmask> <gateway>
Parameters
Note:You can specify the interface you want to configure by entering the interface number when running the interface command. If you do not specify an interface, the command will configure the primary management interface.

The interface command includes the following sub-commands and parameters:

ip dhcp
Configures the ExtraHop system with the DHCP option.
ip dnsserver
Configures the system DHCP servers. This parameter requires the following values:
primary addr
Specifies the primary IP address of the DNS Server.
secondary addr
Specifies the secondary IP address of the DNS server. This parameter is optional.
ip hostname
Specifies the system hostname.
name
Specifies the hostname for the ExtraHop system.
ip ipaddr
Specifies the hostname for the ExtraHop system.
addr
A static IP address.
netmask
An address that specifies the subnet mask.
gateway
The IP address of the computer that is used by devices on the network to access another network or a public network.
ip6 dhcp
Enables IPv6 and configures the ExtraHop system with the DHCPv6 option with IPv6.
Note:If enabled, DHCPv6 will be used to configure DNS settings.
ip6 disable
Disables IPv6.
ip6 ipaddr
Enables IPv6 and sets a static IPv6 address. If specified without an IPv6 address, clears all previously configured static IPv6 addresses.
ip6 ra_dns
Enables the system to configure Recursive DNS Server (RDNSS) and DNS Search List (DNSSL) information according to router advertisements,
ip6 slaac
Enables IPv6 and configures Stateless Address Autoconfiguration for IPv6.
disabled
Disables Stateless Address Autoconfiguration.
hwaddr
Configures the system to automatically assign IPv6 addresses based on the MAC address of the appliance.
stable_private
Configures the system to automatically assign private IPv6 addresses that are not based on hardware addresses. This method is described in RFC 7217.

license

Provides sub-commands to enter the license string to update the ExtraHop license. The license key text is sent by ExtraHop Support, and it is pasted into the CLI at the Enter license text prompt.

Syntax

extrahop#configure
extrahop(config)#license update
Enter license text: <license>

Parameters

The license command includes the following sub-commands and parameters:

update
Updates the ExtraHop system license. This parameter requires the following parameter values:
license
Specifies the license key.

reformat

Provides sub-commands to schedule or cancel a reformat.

Syntax

extrahop#configure
extrahop(config)#reformat

Parameters

The reformat command performs a reformat on the next boot and includes the following subcommand:

reformat cancel
Cancels the scheduled reformat.

remote_auth

Provides sub-commands to enable or disable remote authentication of users on the ExtraHop system. Note that the sub-commands ldap, radius, and tacacs put the CLI in the specific mode to accept parameters for the specified remote authentication method.

Syntax

extrahop#configure
extrahop(config)#remote_auth disabled

Parameters

The remote_auth command includes the following sub-commands and parameters:

disabled
Disables remote authentication.
ldap
Specifies configuration parameters to enable the LDAP remote authentication method. This command puts the CLI in ldap mode and requires the following parameter values:
basedn
Specifies the base of the LDAP search used to find users.
binddn
Specifies the Distinguished Name (DN) used by the ExtraHop system to authenticate with the LDAP server.
port
Specifies the listening port number of the LDAP server.
search
Specifies the search filter used when searching the LDAP directory for user accounts.
server
Specifies the hostname or IP address of the LDAP server (or servers).
show
Displays the current LDAP settings.
radius
Specifies configuration parameters to enable the RADIUS remote authentication method. This command puts the CLI in radius mode and requires requires the following parameter values:
delete_server
Deletes a specified RADIUS server host.
server
Specifies the hostname or IP address of the RADIUS server (or servers), the shared secret password, and an optional timeout value.
show
Displays the current RADIUS settings.
tacacs
Specifies configuration parameters to enable the TACACS remote authentication method. This command puts the CLI in tacacs mode and requires requires the following parameter values:
delete_server
Deletes a specified TACACS server host.
server
Specifies the hostname or IP address of the TACACS server (or servers), the shared secret password, and an optional timeout value.
show
Displays the current TACACS settings.

running_config

Provides commands to update the running configuration settings and save changes made to the running configuration to disk. The update command generates a prompt in the CLI to provide the updated configuration text. For more information about modifying the running config code, see the Running Config section.

Syntax

extrahop#configure
extrahop(config)#running_config edit
Enter configuration:

Parameters

The running_config command includes the following sub-commands and parameters:

edit
Provides an interface to make changes to sections of the running configuration.
update
Provides an interface to make changes to the entire running configuration. You are prompted to enter the running config text by the CLI.
save
Saves the changes made to the running configuration to disk.
revert
Reverts to the saved running configuration.

services

Provides commands to enable or disable the Administration settings, enable or disable the SSH service that supports the CLI interface, and enable or disable SNMP services.

Syntax

extrahop#configure
extrahop(config)#services gui <enable/disable>

The services command includes the following sub-commands and parameters:

gui
Enables or disables the web service that supports the Administration settings. This command supports the parameter values enable to turn on the service and disable to turn off the service.
snmp
Enables or disables the SNMP service that supports SNMP monitoring. This command supports the parameter values enable to turn on the service and disable to turn off the service.
ssh
Enables or disables the SSH service that supports the command-line interface. This command supports the parameter values enable to turn on the service and disable to turn off the service.

systemsettings

Provides commands to work with core files.

Syntax

extrahop#configure
extrahop(config)#systemsettings corefiles lifetime <value>

The systemsettings command includes the following sub-commands and parameters:

corefiles enable
Enables the core files.
corefiles disable
Disables the core files.
lifetime
Sets the value for the core files lifetime.
value
Specifies the lifetime value.

time

Provides commands to set the ExtraHop system time, specified with the following datetime syntax: <MMM DD YYYY H:M:S>.

Syntax

extrahop#configure
extrahop(config-time)#time <time>

Parameters

time
Specifies the time in the following format: MMM DD YYYY H:M:S.

delete

Puts the ExtraHop system into Delete mode. After the delete command executes and the system is in delete mode, you can pass in any of the sub-commands listed below to remove files from the system.

Syntax

extrahop#delete

core

Provides commands to delete core files from the ExtraHop system. This command requires that you specify at least one core file name.

Syntax

extrahop#delete core <file>

Parameters

file
Specifies the name of the core file to delete.

disable

Removes the ExtraHop system from Enable mode. After the disable command executes and the system is disabled, you will need to execute the enable command to perform any operations that modify settings through the command-line interface.

Syntax

extrahop#disable

Example

The following command sequence disables the command-line interface:

extrahop#disable

eca

(Command appliance only) Puts the ExtraHop system into eca mode. After the eca command executes and the system is in eca mode, you can pass in any of the sub-commands listed below to manage connected Discover appliances.

Syntax

extrahop#eca

Example

The following command sequence opens eca mode and lists the details of all connected ExtraHop appliances:

extrahop#eca details

The eca command supports the following sub-commands:

addnode

Provides commands to add a Discover appliance to the Command appliance.

Syntax

extrahop[ECA]#eca addnode

Parameters

After you run the eca addnode command, you are prompted to type the following parameters:

host
Type the hostname of the Discover appliance you are adding.
setup password
Type the password of the Discover appliance setup user.
product key (optional)
Type the ExtraHop product key.
nickname
Type a nickname to easily identify the new Discover appliance.
reset?
Type Y or n.

The reset option removes locally-managed user customizations (device groups, alerts, and triggers) from the node. Gathered metrics, such as captures and devices, remain available.

delnode

Provides commands to remove a Discover appliance from the Command appliance.

Syntax

extrahop[ECA]#eca delnode <nodeid>

Parameters

nodeid
Specifies the id of the Discover appliance to remove.

details

Provides commands to list the configuration details of the connected Discover appliance.

extrahop[ECA]#eca details <nodeid>

Parameters

nodeid
Specifies the id of the Discover appliance.
Tip:Run the eca details command without the nodeid parameter to show the details of all connected appliances.

disable

Provides commands to disable a Discover appliance. When this connection is disabled, the Command appliance cannot access the Discover appliance data.

extrahop[ECA]#eca disable <nodeid>

Parameters

nodeid
Specifies the id of the Discover appliance.

enable

Provides commands to enable a Discover appliance.

Syntax

extrahop[ECA]#eca enable <nodeid>

Parameters

nodeid
Specifies the id of the Discover appliance.

listnodes

Provides command to list the id, name, status, firmware version, and license status of all connected appliances.

Syntax

extrahop[ECA]#eca listnodes

setnickname

Provides a command to create a nickname for a connected appliance.

Syntax

extrahop[ECA]#eca setnickname <id> <nickname>

Parameters

nodeid
Specifies the id of the ExtraHop system.
nickname
The name to set on the appliance.

enable

Puts the ExtraHop system in Privileged mode. After the enable command executes and the system is fully enabled, you can enter and execute other commands to perform operations through the command-line interface. At the start of a session, this command is usually the first command issued. If you are prompted to enter a username and password, type the following credentials:

  • Type shell as the user name.
  • Type the number displayed on the service tag
Note:The service tag is on a pullout tab located on the front of the ExtraHop appliance, below the video connector on the 610 and below the power button on the 710.

Syntax

extrahop>enable

Example

The following command sequence enables the command-line interface and prompts for the system password:

extrahop>enable
password:

ping

Executes a command to ping a selected target to verify the ability to contact the specified host. Ping results specify the response packets received and the round-trip time.

Syntax

extrahop#ping <addr>

Parameters

addr.
Specifies the IP address of the device to ping.

Example

The following command sequence pings a device at the specified IP address:

extrahop#ping 192.164.111.10

reload

Executes a reload operation for the specified ExtraHop system component. After the reload command is invoked, you can reload any of the supported components identified by their subcommands.

Syntax

extrahop#reload

Example

The following command sequence activates Reload mode and reloads the ExtraHop bridge service:

extrahop#reload exbridge

The reload command supports the following sub-commands:

exbridge

Specifies the ExtraHop bridge as the component service to reload.

Syntax

extrahop#reload exbridge

excap

Specifies the ExtraHop capture as the component service to reload.

Syntax

extrahop#reload excap

reset

Executes a reset operation for the specified ExtraHop system component. After the reset command is invoked, you can reset the ExtraHop Datastore, which clears all current data from the Datastore.

Syntax

extrahop#reset

Example

The following command sequence activates Reset mode and clears data from the ExtraHop datastore:

extrahop#reset datastore

The reset command supports the following sub-commands:

datastore

Clears the saved data from the ExtraHop Datastore.

Syntax

extrahop#reset datastore

restart

Executes a restart operation for the specified ExtraHop system component. After the restart command is invoked, you can restart the ExtraHop component services identified by the following sub-commands.

Syntax

extrahop#restart

Example

The following command sequence activates Restart mode and restarts the ExtraHop bridge service:

extrahop#restart exbridge

The restart command supports the following sub-commands:

exbridge

Specifies the ExtraHop bridge as the component service to restart.

Syntax

extrahop#restart exbridge

excap

Specifies the ExtraHop capture as the component service to restart.

Syntax

extrahop#restart excap

exportal

Specifies the ExtraHop web portal as the component service to restart.

Syntax

extrahop#restart exportal

system

Specifies the ExtraHop system as the component to restart. This operation reboots the entire ExtraHop system.

Syntax

extrahop#restart system

webserver

Specifies the ExtraHop web server as the component service to restart.

Syntax

extrahop#restart webserver

show

Puts the CLI in View mode so that you can see the settings and parameter values associated with the ExtraHop system components. After the show command executes and the system is in View mode, you can look at the settings associated with every aspect of the ExtraHop system.

Syntax

extrahop#show

Example

The following command sequence puts the interface in View mode and shows the ExtraHop system time:

extrahop#show clock

The show command supports the following sub-commands:

clock

Specifies the ExtraHop computer current clock time as the setting to show.

Syntax

extrahop#show clock

controllers

Shows the settings for all the ExtraHop system active interfaces.

Syntax

extrahop#show controllers

cores

Shows the settings for the ExtraHop system core files.

Syntax

extrahop#show cores

dhcp

Shows whether DHCP is enabled or disabled on the primary management interface of the ExtraHop system.

Syntax

extrahop#show dhcp

diskmon

Shows the hard disk monitor statistics for the hard drive on the ExtraHop system.

Syntax

extrahop#show diskmon

diskmon_details

Shows the health details of the firmware SSD drive on the ExtraHop Discover appliance.

Syntax

extrahop#show diskmon_details

dnsservers

Shows the DNS server configuration settings for the ExtraHop system.

Syntax

extrahop#show dnsservers

eula_accepted

Shows whether the EUSL/TOS and POC agreements have been accepted for the ExtraHop system.

Syntax

extrahop#show eula_accepted

firmware

Shows the firmware versions installed on the ExtraHop system. Executing this command on a Discover appliance will result in each firmware version being prefaced with "ExtraHop". Executing this command on a Command appliance will result in each firmware version listed being prefaced with "ECA".

Syntax

extrahop#show firmware

flash

Shows the content of the flash key for the ExtraHop system.

Syntax

extrahop#show flash

gateway

Shows the gateway configuration settings for the ExtraHop system.

Syntax

extrahop#show gateway

history

Shows the session command history for the current CLI session.

Syntax

extrahop#show history

hostname

Shows the system hostname for the ExtraHop system.

Syntax

extrahop#show hostname

interface

Displays information about a specific interface of the ExtraHop system.

Syntax

extrahop#show interface <interface-number> <sub-command>

The interface command includes the following sub-commands:

dhcp
Shows whether DHCP is enabled or disabled on the interface.
ipaddr
Shows the IP address and netmask for the ExtraHop system management port on the interface.
macaddr
Shows the MAC address for the interface.

inventory

Shows the firmware version, system BIOS version, serial number, dossier ID, and hostname for the ExtraHop appliance.

Syntax

extrahop#show inventory

ip

Provides sub-commands to show IP address configuration settings for the ExtraHop system.

Syntax

extrahop#show ip arp

Parameters

The ip command includes the following parameters:

arp
Shows ARP resolution for the device and any computers connected to the device.
interface
Shows information for every IP interface on the connected computer.
sockets
Shows all active Internet connections for the device.
traffic
Shows the IP, ICMP, ICMP msg, TCP, UDP, UDP lite, TCP Ext, and IP Ext traffic for the device.

ipaddr

Shows the IP address and netmask for the ExtraHop system management port on the primary management interface.

Syntax

extrahop#show ipaddr

ldap

Shows the LDAP configuration settings for the ExtraHop system.

Syntax

extrahop#show ldap

license

Shows the licensed modules for the ExtraHop system and which ones are enabled or disabled.

Syntax

extrahop#show license

log

Provides sub-commands to show the logs for the ExtraHop system.

Syntax

extrahop#show log

Parameters

The log command includes the following parameters:

exbridge
Shows the ExtraHop system bridge component logs.
excap
Shows the ExtraHop system capture logs.
exportal
Shows the ExtraHop system web portal logs.

macaddr

Shows the MAC address for the primary management interface of the ExtraHop appliance.

Syntax

extrahop#show macaddr

memory

Shows the total, used, free, shared, buffers, and cached memory as well as Swap information for the ExtraHop system.

Syntax

extrahop#show memory

nics

Shows all NICs (network interface controllers) as well as their link status and link speed for the ExtraHop appliance.

Syntax

extrahop#show nics

processes

Shows the status of all ExtraHop system processes.

Syntax

extrahop#show processes

radius

Shows the RADIUS configuration settings for the ExtraHop system.

Syntax

extrahop#show radius

remote_auth

Shows the remote authentication configuration settings for the ExtraHop system.

Syntax

extrahop#show remote_auth

running_config

Shows the running configuration settings for the ExtraHop system.

Syntax

extrahop#show running_config

systemsettings

Shows whether the core files are enabled and if the offline capture setting is enabled for the ExtraHop system.

Syntax

extrahop#show systemsettings

tacacs

Shows the TACACS configuration settings for the ExtraHop system.

Syntax

extrahop#show tacacs

users

Shows the user accounts for the ExtraHop system.

Syntax

extrahop#show users

version

Shows the base firmware version and the currently running firmware version on the ExtraHop system.

Syntax

extrahop#show version

shutdown

Initiates the system shutdown operation for the ExtraHop system.

Syntax

extrahop#shutdown

Example

The following command sequence initiated the ExtraHop system shutdown:

extrahop#shutdown

stop

Stops the specified ExtraHop system components. After the stop command is invoked, you can halt the operation of specific system component services without shutting down the entire ExtraHop system.

Syntax

extrahop#stop

Example

The following command sequence puts the interface in Stop mode and halts the operation of the ExtraHop bridge component service:

extrahop#stop exbridge

The stop command supports the following sub-commands:

exbridge

Specifies the ExtraHop bridge as the system component service to stop.

Syntax

extrahop#stop exbridge

excap

Specifies the ExtraHop capture as the system component service to stop.

Syntax

extrahop#stop excap

exportal

Specifies the ExtraHop web portal as the system component service to stop.

Syntax

extrahop#stop exportal

webserver

Specifies the ExtraHop web server as the system component service to stop.

Syntax

extrahop#stop webserver

support

Provides commands to enable or disable the ExtraHop system support account. After the support command is invoked, you can enable or disable the support account.

Syntax

extrahop#support

Example

The following command sequence puts the interface in Support mode and it activates the support account:

extrahop#support enable

The support command includes the following sub-commands:

enable

Turns on the ExtraHop system support account.

Syntax

extrahop#support enable

disable

Turns off the ExtraHop system support account.

Syntax

extrahop#support disable

traceroute

Executes the traceroute command on the ExtraHop system to measure packet delays across the network.

Syntax

extrahop#traceroute <addr>

Parameters

addr.
Specifies the IP address of a network device.

Example

The following command executes the traceroute command to measure network packet loss for the route to and from the specified IP address:

extrahop#traceroute <addr>
Last modified 2023-11-07