Tracing Unicast Routes From The Cli; Using The Traceroute Command; Using The Traceroute Monitor Command - Juniper J-Series Administration Manual

Tracing Unicast Routes from the CLI

Use the CLI
Router and a specified destination host. This command is useful for diagnosing a
point of failure in the path from the Services Router to the destination host, and
addressing network traffic latency and throughput problems.
The Services Router generates the list of routers by sending a series of ICMP traceroute
packets in which the time-to-live (TTL) value in the messages sent to each successive
router is incremented by 1. (The TTL value of the first traceroute packet is set to 1.)
In this manner, each router along the path to the destination host replies with a Time
Exceeded packet from which the source IP address can be obtained.
Alternatively, you can use the J-Web interface. (See "Tracing Unicast Routes from
the J-Web Interface" on page 223.)
The
display real-time monitoring information about each router between the Services
Router and a specified destination host.
This section contains the following topics. For more information about
commands, see the JUNOS System Basics and Services Command Reference.

Using the traceroute Command

To display a list of routers between the Services Router and a specified destination
host, enter the
237 describes the
user@host> traceroute host <interface interface-name> <as-number-lookup>
<bypass-routing> <gateway address> <inet | inet6> <no-resolve>
<routing-instance routing-instance-name> <source source-address> <tos number>
<ttl number> <wait seconds>
To quit the
Table 121: CLI traceroute Command Options
Option
host
interface interface-name
as-number-lookup
traceroute command to display a list of routers between the Services
command combines ping and traceroute functionality to
traceroute monitor
Using the traceroute Command on page 237
Using the traceroute monitor Command on page 238
traceroute command with the following syntax. Table 121 on page
traceroute
command, press Ctrl-C.
traceroute
Description
Sends traceroute packets to the hostname or IP address you specify.
(Optional) Sends the traceroute packets on the interface you specify. If you do not include this
option, traceroute packets are sent on all interfaces.
(Optional) Displays the autonomous system (AS) number of each intermediate hop between the
router and the destination host.
Chapter 12: Using Services Router Diagnostic Tools
command options.
Using CLI Diagnostic Commands
traceroute
237