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play_arrow Overview
play_arrow Operation, Administration, and Management Features
- play_arrow Ethernet OAM and Connectivity Fault Management for Routers
- play_arrow Link Fault Management for Routers
- play_arrow Ethernet OAM Link Fault Management for Switches
- play_arrow Ethernet OAM Connectivity Fault Management for Switches
- play_arrow Ethernet Frame Delay
- play_arrow Ethernet Service OAM (ITU-TY.1731) for Routers
play_arrow Network Monitoring by using SNMP
play_arrow Remote Network Monitoring (RMON) with SNMP Alarms and Events
play_arrow Accounting Options
- Accounting Options Overview
- Configure Accounting Options, Source Class Usage and Destination Class Usage Options
play_arrow Monitoring Options
- play_arrow Interface Alarms
  - Alarm Overview
  - Example: Configure Interface Alarms
- play_arrow IP Monitoring
- play_arrow sFlow Monitoring Technology
- play_arrow Adaptive Sampling for Routers and Switches
  - Adaptive Sampling Overview
- play_arrow Packet Flow Accelerator Diagnostics Software
play_arrow Monitoring Common Security Features
play_arrow Performance Management
- Network Analytics
- Configure Hardware Resource Threshold Monitoring for Capacity Planning
play_arrow Port Mirroring
- play_arrow Port Mirroring and Analyzers
play_arrow System Log Messages
play_arrow Network Management and Troubleshooting
play_arrow Configuration Statements and Operational Commands
- Junos CLI Reference Overview

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English

Display Real-Time Information from Device to Host

date_range 10-Nov-23

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This section describes how to display real-time monitoring information about each device between the device and a destination host.

Display Real-Time Monitoring Information

To display real-time monitoring information about each device between the device and a specified destination host, enter the traceroute monitor command with the following syntax:

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user@host> traceroute monitor host <count number> <inet | inet6> <interval seconds> <no-resolve> <size bytes><source source-address> <summary>

Table 1 describes the traceroute monitor command options.

Table 1: CLI traceroute monitor Command Options
Option	Description
`host`	Sends traceroute packets to the hostname or IP address you specify.
`count` `number`	(Optional) Limits the number of ping requests, in packets, to send in summary mode. If you do not specify a count, ping requests are continuously sent until you press Q.
`inet`	(Optional) Forces the traceroute packets to an IPv4 destination.
`inet6`	(Optional) Forces the traceroute packets to an IPv6 destination.
`interval` `seconds`	(Optional) Sets the interval between ping requests, in seconds. The default value is `1` second.
`no-resolve`	(Optional) Suppresses the display of the hostnames of the hops along the path.
`size` `bytes`	(Optional) Sets the size of the ping request packet. The size can be from `0` through `65,468` bytes. The default packet size is `64` bytes.
`source address`	(Optional) Uses the source address that you specify, in the traceroute packet.
`summary`	(Optional) Displays the summary traceroute information.

To quit the traceroute monitor command, press Q.

The following is sample output from a traceroute monitor command:

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user@host> traceroute monitor host2

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                                                        My traceroute  [v0.69]
 host (0.0.0.0)(tos=0x0 psize=64 bitpattern=0x00)                                                          Wed Mar 14 23:14:11 2007
 Keys:  Help   Display mode   Restart statistics   Order of fields   quit
                                                                                            Packets               Pings
  Host                                                                                    Loss%   Snt   Last   Avg  Best  Wrst StDev
  1. 173.24.232.66                                                                         0.0%     5    9.4   8.6   4.8   9.9   2.1
  2. 173.24.232.66                                                                         0.0%     5    7.9  17.2   7.9  29.4  11.0
  3. 173.24.232.66                                                                         0.0%     5    9.9   9.3   8.7   9.9   0.5
  4. 173.24.232.66                                                                         0.0%     5    9.9   9.8   9.5  10.0   0.2

Table 2 summarizes the output fields of the display.

Table 2: CLI traceroute monitor Command Output Summary
Field	Description
`host`	Hostname or IP address of the device issuing the `traceroute monitor` command.
`psizesize`	Size of ping request packet, in bytes.
Keys
`Help`	Displays the Help for the CLI commands. Press H to display the Help.
`Display mode`	Toggles the display mode. Press D to toggle the display mode
`Restart statistics`	Restarts the `traceroute monitor` command. Press R to restart the `traceroute monitor` command.
`Order of fields`	Sets the order of the displayed fields. Press O to set the order of the displayed fields.
`quit`	Quits the `traceroute monitor` command. Press Q to quit the `traceroute monitor` command.
Packets
`number`	Number of the hop (device) along the route to the final destination host.
`Host`	Hostname or IP address of the device at each hop.
`Loss%`	Percent of packet loss. The number of ping responses divided by the number of ping requests, specified as a percentage.
Pings
`Snt`	Number of ping requests sent to the device at this hop.
`Last`	Most recent round-trip time, in milliseconds, to the device at this hop.
`Avg`	Average round-trip time, in milliseconds, to the device at this hop.
`Best`	Shortest round-trip time, in milliseconds, to the device at this hop.
`Wrst`	Longest round-trip time, in milliseconds, to the device at this hop.
`StDev`	Standard deviation of round-trip times, in milliseconds, to the device at this hop.

Display Multicast Path Information

To display information about a multicast path from a source to the device, enter the mtrace from-source command with the following syntax:

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user@host> mtrace from-source source host <extra-hops number> <group address> <interval seconds> <max-hops number> <max-queries number> <response host> <routing-instance routing-instance-name> <ttl number> <wait-time seconds> <loop> <multicast-response | unicast-response> <no-resolve> <no-router-alert> <brief | detail>

Table 3 describes the mtrace from-source command options.

Table 3: CLI mtrace from-source Command Options
Option	Description
`source host`	Traces the path to the specified hostname or IP address.
`extra-hops number`	(Optional) Sets the number of extra hops to trace past nonresponsive devices. Specify a value from `0` through `255`.
`group address`	(Optional) Traces the path for the specified group address. The default value is `192.0.2.0`.
`interval seconds`	(Optional) Sets the interval between statistics gathering. The default value is `10`.
`max-hops number`	(Optional) Sets the maximum number of hops to trace toward the source. Specify a value from `0` through `255`. The default value is `32`.
`max-queries number`	(Optional) Sets the maximum number of query attempts for any hop. Specify a value from `1` through `32`. The default value is `3`.
`response host`	(Optional) Sends the response packets to the specified hostname or IP address. By default, the response packets are sent to the device.
`routing-instance routing-instance-name`	(Optional) Traces the routing instance you specify.
`ttl number`	(Optional) Sets the time-to-live (TTL) value in the IP header of the query packets. Specify a hop count from `0` through `255`. The default value for local queries to the `all routers` multicast group is `1`. Otherwise, the default value is `127`.
`wait-time seconds`	(Optional) Sets the time to wait for a response packet. The default value is `3` seconds.
`loop`	(Optional) Loops indefinitely, displaying rate and loss statistics. To quit the `mtrace` command, press Ctrl-C.
`multicast-response`	(Optional) Forces the responses to use multicast.
`unicast-response`	(Optional) Forces the response packets to use unicast.
`no-resolve`	(Optional) Does not display hostnames.
`no-router-alert`	(Optional) Does not use the device alert IP option in the IP header.
`brief`	(Optional) Does not display packet rates and losses.
`detail`	(Optional) Displays packet rates and losses if a group address is specified.

The following is sample output from the mtrace from-source command:

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user@host> mtrace from-source source 192.1.4.1 group 224.1.1.1

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Mtrace from 192.1.4.1 to 192.1.30.2 via group 224.1.1.1 Querying full reverse path... * *    0  ? (192.1.30.2)  -1  ? (192.1.30.1)  PIM  thresh^ 1    -2  routerC.mycompany.net (192.1.40.2)  PIM  thresh^ 1    -3  hostA.mycompany.net (192.1.4.1) Round trip time 22 ms; total ttl of 2 required.  Waiting to accumulate statistics...Results after 10 seconds:    Source        Response Dest    Overall     Packet Statistics For Traffic From 192.1.4.1  192.1.30.2       Packet      192.1.4.1 To 224.1.1.1      v       __/  rtt   16 ms     Rate       Lost/Sent = Pct  Rate 192.168.195.37  192.1.40.2      routerC.mycompany.net       v     ^      ttl    2                      0/0    = --    0 pps 192.1.40.1      192.1.30.1      ?                    v      \__   ttl    3                      ?/0            0 pps 192.1.30.2      192.1.30.2   Receiver      Query Source

Each line of the trace display is usually in the following format (depending on the options selected and the responses from the devices along the path):

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hop-number host (ip-address) protocolttl

Table 4 summarizes the output fields of the display.

Note:

The packet statistics gathered from Juniper Networks devices and routing nodes always display as 0.

Table 4: CLI mtrace from-source Command Output Summary
Field	Description
`hop-number`	Number of the hop (device) along the path.
`host`	Hostname, if available, or IP address of the device. If the `no-resolve` option was entered in the command, the hostname is not displayed.
`ip-address`	IP address of the device.
`protocol`	Protocol used.
`ttl`	TTL threshold.
`Round trip time milliseconds ms`	Total time between the sending of the query packet and the receiving of the response packet.
`total ttl of number required`	Total number of hops required to reach the source.
`Source`	Source IP address of the response packet.
`Response Dest`	Response destination IP address.
`Overall`	Average packet rate for all traffic at each hop.
`Packet Statistics For Traffic From`	Number of packets lost, number of packets sent, percentage of packets lost, and average packet rate at each hop.
`Receiver`	IP address receiving the multicast packets.
`Query Source`	IP address of the host sending the query packets.

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Display Real-Time Monitoring Information

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