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    IP/MPLSView Client Installation Frequently Asked Questions

    I get an error message when I install the client on my PC. A certain file could not be written.

    This can be caused by previous IP/MPLSView client sessions on your PC that are still open. Try closing them and then reinstall the client.


    I am unable to start the PC client and get the following message: “Out of environment space”.

    This issue arises when you do not have enough memory in your MS-DOS environment to set an environment variable. For more information about this issue and alternative solutions, see Microsoft’s Knowledge Base Article # 230205:

    http://support.microsoft.com:80/support/kb/articles/Q230/2/05.ASP&NoWebContent=1


    I can't connect from the client to the server.

    This could be due to a firewall. To check if there is a firewall, do the following:

    1. Log into the server machine and check to see if the chosen port is open and listening by using the netstat -a |grep 7000 command. (7000 is the default IP/MPLSView server port). If the port is listening, go to Step 2.
    2. Use the telnet IP_address 7000 command with the appropriate substitution for IP_address. Wait to see the response. If you have access to the port, you might see a message like Escape character is '^]’. The cursor stays and the session does not time out. In this case, it might not be a firewall problem. However, if the port is open, but you do not have access to it, it is a firewall problem.

    Check that the required ports are open between the client and server. See Required Ports to Open in Firewalls.

    If there is a firewall, and you do not require online modules, you might want to try SSH tunneling, as described in Installing the Rsync Package and Automating SSH Login. For NAT situations, see Additional Steps for Installing IP/MPLSView in a NAT Environment.


    I can’t connect from the client to the Linux server.

    This could be due to a firewall. To check if there is a firewall:

    1. Log in to the server machine and check to see if the chosen port is open and listening. (7000 is the default IP/MPLSView server port).
      netstat -a |grep 7000
    2. To disable the firewall on Centos 6.x use the following commands:
      service iptables stop
      service ip6tables stop
      chkconfig iptables off
      chkconfig ip6tables off
      vi /etc/sysconfig/selinux
    3. Change the selinux=enforcing entry to selinux=disabled.
    4. Reboot the machine after making the changes.

    I get a login error although I entered the correct login and password.

    If the /u/wandl/db/sys/npatpw license file contains the license for useradmin, the access to the graphical interface is controlled by the Advanced User Admin tool, and each Linux account other than wandl must be authorized separately. For more information, see Creating Users and Groups Using the User Administration Tool.


    I can’t open the Task Manager.

    If the Task Manager is not displayed, close the client window and wait a couple of minutes before restarting the client and attempting to open the Task Manager. To check the status of the processes, use the /u/wandl/bin/status_mplsview command or read the /u/wandl/log/tmng.log.0 file.

    If this does not help, you might want to try stopping and restarting the Task Manager using the /u/wandl/bin/.tmng stop command. After that is done, use the /u/wandl/bin/.tmng command to restart the Task Manager. Verify that the process ID for the TMNG process in the /u/wandl/tmp/.pids file is correct by using the ps -fp <pid> command, substituting <pid> with the process ID.

    Verify that the 2099 and 2100 ports are opened between the client and server, as indicated in Required Ports to Open in Firewalls.


    After a couple of minutes of use, the client always becomes unresponsive or hangs.

    This might be due to a firewall closing idle connections. You can specify a shorter keepalive message interval (for example, 60 seconds) by selecting Application > Keep-Alive Message.


    How do I increase the memory that Java can use on my PC client?

    Edit the ipmplsview.bat batch file used to start the client. To change the memory setting from 128M to 192M, change SET MEMORY=128M to SET MEMORY=192M. This number should not exceed the PC’s RAM. Additionally, if you are also using your PC for other tasks while you run IP/MPLSView, make sure to reserve some memory for other applications on your PC. Otherwise, they might be slowed down significantly.


    I could not invoke the browser for the Help manual on the operating system.

    On the operating system, you might need to set the path to access NetScape to avoid the following error message: Could not invoke browser, command=’netscape -remote openURL(...)’.. To do so, append the path for NetScape to the PATH environment variable. For example, if NetScape is located in /usr/dt/bin, use the following command:

    PATH=/usr/dt/bin:$PATH; export PATH

    To permanently set the PATH variable, create or edit the .profile file in your Linux user’s administrative home directory.

    Modified: 2016-06-29