Performing a remote traceroute to a device within an LSP

Perform a remote traceroute to a device within a Multiprotocol Label Switching (MPLS) label-switched path (LSP) from a specified Cisco provider-edge (PE) router in order to troubleshoot the MPLS core network.

Before you begin

In order to perform this procedure, first ensure the following:
  • You are in an MPLS VPN network view.
  • If you want to automatically log into the Cisco or Juniper devices, you must first configure login credentials.

Procedure

  1. In the network map, select the Cisco PE router from which you wish perform the LSP traceroute.
    To select multiple devices, press Ctrl.
  2. Right-click on one of the selected devices and choose the menu option WebTools > Cisco Tools… > Diagnostic Tools… > LSP Traceroute from this device….
  3. Complete the fields in the Cisco LSP Traceroute Tool window.
    From
    Specify the Cisco device or devices to LSP traceroute from. This field accepts a comma-separated list of IP addresses or hostnames.
    Target FEC and Mask
    Specify the forward-equivalency class (FEC) and netmask. The FEC is a classification of a group of packets. All packets assigned to an FEC receive the same routing treatment. This tool accepts FECs based on IP address. Therefore, this field accepts a single IP address and a netmask.
    Automatic Login
    Specify that you have already specified Telnet login credentials to use when running this tool. This is not selected by default.
    Username
    Specify a username to use for Telnet access to the devices specified in the Query field. If you have specified multiple devices, then the login credentials that you specify must be valid for all of these devices.
    Password
    Specify a password to use for Telnet access to the devices specified in the Query field. If you have specified multiple devices, then the login credentials that you specify must be valid for all of these devices.
    Passcode
    Specify an optional security authentication measure. Complete this field only if your network administrator has applied RSA SecurID two-factor user authentication to the devices you wish to log into. Type the passcode from your RSA SecurID token.
    Note: Your passcode changes at regular 30 second intervals. Ensure that you launch the tool immediately after supplying the passcode.
    Send: E-Mail To…
    Specify whether the results should be emailed to one or more listed recipients. This option is not selected by default.
    Recipients
    Specify a comma-separated list of recipients to which the results of the tool should be sent. This field is only displayed if Send: E-Mail To… is selected.
  4. Click Start to launch the tool with the parameters specified.
    The results of the ping operation appear in one or more separate browser windows.