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probe (ICMP Router Discovery)

Syntax

Description

Query the status of the probed interface.

Options

by-address

(Optional) Probe a local interface by address.

by-index

(Optional) Probe a local interface by index.

by-name

(Optional) Probe a local interface by name.

by-remote-address

(Optional) Probe a remote interface by remote address.

count

(Optional) Specify the number of probe requests or packets sent out.

  • Range: 1 through 255

detail

(Optional) Display details of the incoming interface of the received packet.

inet

(Optional) Force probe to IPv4 network family destination.

inet6

(Optional) Force probe to IPv6 network family destination.

interface interface-name

(Optional) Specify the source interface to send the probe requests.

interval seconds

(Optional) Specify the time interval between the probe requests.

  • Default: 1 second

logical-system logical-system-name

(Optional) Specify the name of the logical system used to send the probe requests.

routing-instance routing-instance-name

(Optional) Specify the routing instance for the probe attempt.

source source-address

(Optional) Specify the source IP address of the probing interface.

tos type-of-service

(Optional) Specify the type-of-service (ToS) field in the IP header of the probe packets.

  • Range: 0 through 255

ttl value

(Optional) Specify the time-to-live (TTL) value for IPv4 packets and hop-limit value for IPv6 packets for the number of hops/devices to cross.

  • Range: 0 through 255

wait seconds

(Optional) Specify the maximum wait time in seconds after the final packet is sent. If this option is not specified, the default delay is 10 seconds.

  • Default: 10 seconds

Required Privilege Level

system-To view this statement in the configuration.

Output Fields

Table 1 lists the output fields for the probe command. The output fields are listed in the appropriate order in which they appear.

Table 1: probe Output Fields

Field Name

Field Description

Level of Output

icmp-seq

ICMP sequence number of the proxy IP address.

All levels

ttl

Time to live value (maximum IPv6 hop-limit-value) of the packets sent—0 to 255.

none

code

ICMP code values where—0 indicates No Error, 1 indicates Malformed Query, 2 indicates No Such Interface, 3 indicates No Such Table Entry, and 4 indicates Multiple Interfaces Satisfy Query.

All levels

state

State values are—0 indicates Reserved, 1 indicates Incomplete, 2 indicates Reachable, 3 indicates Stale, 4 indicates Delay, 5 indicates Probe, and 6 indicates Failed.

All levels

active

Inactive/active state (0 indicates inactive state and 1 indicates active state) of the IPv4 or IPv6 address configured.

All levels

IPv4

Unconfigured/configured state (0 indicates unconfigured and 1 indicates configured state) of IPv4 address.

All levels

IPv6

Unconfigured/configured state (0 indicates unconfigured and 1 indicates configured state) of IPv6 address.

All levels

time

Time taken time taken to receive the reply after the request is transmitted in milliseconds (ms).

All levels

hlim

Hop limit to the destination.

detail

Sample Output

Probing Proxy IP Address Using Interface Names of the Probed Interface that Resides in the Proxy Node

Probing Proxy IP Address Using Interface-index of the Probed Interface that Resides in the Proxy Node

Probing Proxy IP Address Using IPv4 or IPv6 Address Configured in the Probed Interface on the Proxy Node

Probing the Proxy IP Address Configured on the Proxy Node for Information About the Probed IP Address Configured on the Probed Node

Probing the Proxy IP Address for Information About the Probed Interface

Probing the Proxy IP Address for Information About the Probed Interface Details Using the Probed Interface Name That Resides on the Proxy Node

Release Information

Command introduced in Junos OS Release 20.3R1.