- play_arrow Overview
- play_arrow Overview
- J-Web User Interface for EX Series Switches Overview
- J-Web Interface—Application Package
- Understanding J-Web User Interface Sessions
- Dashboard for EX Series Switches
- Understanding J-Web Configuration Tools
- Understand Alarm Types and Severity Levels on EX Series Switches
- Using the Commit Options to Commit Configuration Changes (J-Web Procedure)
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- play_arrow Configuration
- play_arrow Starting J-Web
- play_arrow J-Web Configuration Tools
- play_arrow System Basics Configuration
- Connecting and Configuring an EX Series Switch (J-Web Procedure)
- Configuring Date and Time for the EX Series Switch (J-Web Procedure)
- Configuring System Identity for an EX Series Switch (J-Web Procedure)
- Configuring Management Access for the EX Series Switch (J-Web Procedure)
- Generating SSL Certificates to Be Used for Secure Web Access (EX Series Switch)
- Rebooting or Halting the EX Series Switch (J-Web Procedure)
- play_arrow Class of Service Configuration
- Defining CoS Drop Profiles (J-Web Procedure)
- Defining CoS Classifiers (J-Web Procedure)
- Defining CoS Code-Point Aliases (J-Web Procedure)
- Assigning CoS Components to Interfaces (J-Web Procedure)
- Defining CoS Forwarding Classes (J-Web Procedure)
- Defining CoS Rewrite Rules (J-Web Procedure)
- Defining CoS Schedulers (J-Web Procedure)
- Defining CoS Scheduler Maps (J-Web Procedure)
- play_arrow Security and Management Configuration
- play_arrow Routing Policies and Packet Filtering Configuration
- play_arrow Ethernet Switching Configuration
- play_arrow Interfaces
- play_arrow Configuring Services
- play_arrow Configuring Layer 3 Protocols
- play_arrow Configuring Real-Time Performance Monitoring
- play_arrow Software Installation and Upgrades
- play_arrow Configuration, Files, Users, Licenses, and Product Registration
- Managing Configuration Files Through the Configuration History (J-Web Procedure)
- Setting or Deleting the Rescue Configuration (J-Web Procedure)
- Uploading a Configuration File (J-Web Procedure)
- Managing Log, Temporary, and Crash Files on the Switch (J-Web Procedure)
- Managing Users (J-Web Procedure)
- Managing Licenses for the EX Series Switch (J-Web Procedure)
- Registering the EX Series Switch with the J-Web Interface
- Generating Support Information Reports for EX Series Switches Using the J-Web Interface
- play_arrow Virtual Chassis Configuration
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- play_arrow Administration
- play_arrow Software, Files, Licenses, Logs
- Uploading a Configuration File (J-Web Procedure)
- Managing Configuration Files Through the Configuration History (J-Web Procedure)
- Setting or Deleting the Rescue Configuration (J-Web Procedure)
- Updating J-Web Interface on EX Series Switches (J-Web Procedure)
- Upgrading Junos OS on EX Series Switches (J-Web Procedure)
- Managing Licenses for the EX Series Switch (J-Web Procedure)
- Rebooting or Halting the EX Series Switch (J-Web Procedure)
- Managing Log, Temporary, and Crash Files on the Switch (J-Web Procedure)
- Registering the EX Series Switch with the J-Web Interface
- Generating Support Information Reports for EX Series Switches Using the J-Web Interface
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- play_arrow Troubleshooting
- play_arrow Troubleshooting Task
- play_arrow FAQ
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Monitoring Network Traffic Using Traceroute
Purpose
This topic applies only to the J-Web Application package.
Use the Traceroute page in the J-Web interface to trace a route between the switch and a remote host. You can use a traceroute task to display a list of waypoints between the switch and a specified destination host. The output is useful for diagnosing a point of failure in the path from the switch platform to the destination host and addressing network traffic latency and throughput problems.
Action
To use the traceroute tool:
Select Troubleshoot > Traceroute.
Next to Advanced options, click the expand icon.
Enter information into the Traceroute page.
The Remote Host field is the only required field.
Click Start.
To stop the traceroute operation before it is complete, click OK while the results of the traceroute operation are being displayed.
Meaning
The switch generates the list of waypoints by sending a series of ICMP traceroute packets in which the time-to-live (TTL) value in the messages sent to each successive waypoint is incremented by 1. (The TTL value of the first traceroute packet is set to 1.) In this manner, each waypoint along the path to the destination host replies with a Time Exceeded packet from which the source IP address can be obtained.
The results of the traceroute operation are displayed in the main pane. If no options are specified, each line of the traceroute display is in the following format:
hop-number host (ip-address) [as-number] time1 time2 time3
The switch sends a total of three traceroute packets to each waypoint along the path and displays the round-trip time for each traceroute operation. If the switch times out before receiving a Time Exceeded message, an asterisk (*) is displayed for that round-trip time.
Field | Function | Your Action |
|---|---|---|
Remote Host | Identifies the destination host of the traceroute. | Type the hostname or IP address of the destination host. |
Advanced Options | ||
Don't Resolve Addresses | Determines whether hostnames of the hops along the path are displayed, in addition to IP addresses. | To suppress the display of the hop hostnames, select the check box. |
Gateway | Specifies the IP address of the gateway to route through. | Type the gateway IP address. |
Source Address | Specifies the source address of the outgoing traceroute packets. | Type the source IP address. |
Bypass Routing | Determines whether traceroute packets are routed by means of the routing table. If the routing table is not used, traceroute packets are sent only to hosts on the interface specified in the Interface box. If the host is not on that interface, traceroute responses are not sent. | To bypass the routing table and send the traceroute packets to hosts on the specified interface only, select the check box. |
Interface | Specifies the interface on which the traceroute packets are sent. | From the list, select the interface on which traceroute packets are sent. If you select any, the traceroute requests are sent on all interfaces. |
Time-to-live | Specifies the maximum time-to-live (TTL) hop count for the traceroute request packet. | From the list, select the TTL. |
Type-of-Service | Specifies the type-of-service (TOS) value to include in the IP header of the traceroute request packet. | From the list, select the decimal value of the TOS field. |
Resolve AS Numbers | Determines whether the autonomous system (AS) number of each intermediate hop between the router and the destination host is displayed. | To display the AS numbers, select the check box. |
