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Known Problems and Limitations

This section identifies known problems and limitations in this release.

User Interface

  • Committed VJX configuration changes may take longer than expected to show up in the downloaded configuration files immediately following Save and Save As commands. Check the changes in the configuration files after the Save/Save As (you will have to download the topology to your host environment to check). If the changes are not there, wait 30 seconds and repeat (PR/731033).
  • Occasionally, even though the message in the Messages tab of the Details section of the Access Active Topologies window may inform you that the topology started successfully, not all virtual machines started successfully. If you cannot Telnet to one or more virtual machines, stop and restart the topology. If the problem persists, contact Juniper Networks Technical Assistance Center (JTAC).
  • Junosphere is best viewed with Mozilla Firefox 19.0 or greater and IE 9.0 or greater. In IE 9.0, Compatibility View must be turned off in order to view the user interface. If it is turned on, the user interface does not display correctly.
  • When a user tries to execute an operation in Junosphere, a message might appear that says that the connection is lost or a link is broken. The user needs to click the Refresh icon. The browser defaults to the Welcome page and the user must navigate back to the page he or she was on when the Refresh icon was clicked.
  • The maximum transmission unit (MTU) in the VJX interface must be set to less than 1500 (default). Otherwise, it cannot route BGP packets. The MTU should be set to 1200.
  • Junosphere has been tested on Windows and Linux platforms.

Virtual Images

  • The Packet Design Route Explorer virtual image was removed from the current Junosphere release.
  • The Spirent TestCenter virtual image was removed from the current Junosphere release. It is no longer supported and you should remove existing VMs from your topology.
  • The Junos Space 13.1 virtual machine image with pre-installed applications takes at least 15 minutes after a topology is active to get web service. The Junos Space 13.1 platform virtual machine image takes 10 to 12 minutes after a topology is active to get web service.
  • The Cariden MATE virtual image was removed from the current Junosphere release.
  • The Puppet Labs virtual image was removed from the current Junosphere release.
  • For VMX images, Junosphere currently supports only the Juniper Networks VMX_13_3 and VMX_MRT images. Any other VMX image versions do not work in Junosphere. If you start a topology that contains an old VMX image, you will receive an error message and the topology will fail to start. In order to start a topology that includes an old VMX image, you must replace the image with the VMX_13_3 image or VMX_MRT image. You can do this using the topology wizard.

    To replace an old VMX image in Junosphere:

    1. From the navigation tree, select Topologies > Manage Topologies.
    2. In the Topologies section, select the check box next to the topology in which you need to replace the VMX image and then click the Edit Topology pencil icon that appears in the top left corner of the screen.
    3. You may receive an error message. Click Ok to close the error message. The topology wizard canvas appears.
    4. You must first delete the old VMX image from the topology wizard canvas. To delete the image, right click on the image and select Delete from the menu.
    5. Next, delete any associated bridges for the image. To delete a bridge, right click on the bridge and select Delete from the menu.
    6. To replace the image, drag and drop the new VMX image that is located in the Juniper - Experimental section of the images tool bar.
    7. Next, replace the bridges that you deleted. To replace a bridge, hover the cursor over the center of the virtual machine that you want to connect until a hand icon appears and the selected element is surrounded by a green box. Then click and drag your cursor until it connects to the new VMX image.

      Repeat this step for all bridges that you need to replace.

    8. Click the Save button that appears in the lower right corner of the topology wizard canvas.

      Your topology now contains the updated image.

  • The Junos Space 12.2 image with applications (SPACE_12_2R1_3_APPS) is not available due to a possible defect.
  • If you are using a VJX virtual machine image version prior to version 12.3, which is the VJX_LATEST macro, you may experience a licensing issue with the virtual machine image. When this happens, the VJX image needs to be restarted. If you still experience a licensing issue after restarting the VJX image, the license file needs to be patched manually during run time.

Joining an Active Topology

  • If you are using Java Version 8 Update 31 when you try to join topologies, you must configure the Java security settings to use TLS 1.0. We recommend that you also set the options to use TLS 1.1 and TLS 1.2.

    To change the security settings:

    1. Open the Java Control Panel.
    2. Select the Advanced tab.
    3. On the Advanced tab, select the Use TLS 1.0, Use TLS 1.1, and Use TLS 1.2 options.
    4. Click the OK button at the bottom of the Java control panel window.
    5. Return to Junosphere and click the Join button again to join your topology.
  • Mac users sometimes cannot join an active topology because Secure Access is not automatically downloaded from the browser to install the Network Connect software.

    To enable Mac users to join a topology in this situation:

    1. Download the appropriate version of Pulse and install it on the Mac with the help of the Juniper Networks Technical Assistance Center (JTAC). JTAC can assist you with the installation, create a new connection entry, and ensure that the Join operation completes.

      Note: When you install any software on a Mac, you must always enter the admin password even though the user is an admin by default.

    2. After you click Join, note the URL on the active tab or frame of the browser. It is in the format, where X is an integer.
    3. Open the Pulse application, create a new connection with this URL, and click Connect.

      Note: When you restart a topology, the URL might change. You must have a connection with this new URL to complete the Join operation.

    4. Once the connection is established, enter your Junosphere credentials to complete the Join operation.


  • In the Topology Wizard, there is a limit of 32 connections to a bridge domain.
  • If you download a topology and upload it into another library, you can no longer preview it or edit it using the topology wizard. However, you can copy a topology from one library to another and the copied topology can be previewed and edited using the topology wizard as long as the source topology was created using the topology wizard.

    To copy a topology, go to Topologies > Manage Topologies, select the topology that you want to copy, and click the Copy icon located in the top left corner of the screen. A new window appears where you can specify a new name for the topology and select one or more destination libraries for the topology. Then, you can edit the topology in the topology wizard by clicking the Edit topology icon located in the top left corner of the Manage Topologies window.

  • Occasionally, you might be presented with a dialog box stating that you are no longer connected to a topology, but your topology’s Network Connect session cannot be terminated. For security purposes, you must manually disconnect from the Network Connect session on your host. This might happen in the following situations:
    • If you leave a topology, but the Network Connect session is still showing as connected and you never receive a session time-out message.
    • You stop the topology, but the Network Connect session is still showing as connected.
    • You join a topology, then try to join another topology. If the Network Connect session did not end before you try to log in to the Junosphere Access Portal for the second topology, then you must sign out manually from the first Network Connect session.
  • To install the Network Connect software, you must have administrative rights on your computer.
  • Users should assign the hostnames for virtual machines when the topology is created or edited in the Topology Wizard. It is important to create unique hostnames within the topology.
  • In the Topology Wizard, when you rename a Virtual Machine (VM), it changes the hostname in the .vmm file. However, the hostname is not changed in the configuration files that are associated with it. You must manually change the hostnames in configuration files.
  • Junosphere does not recommend changing the host name of virtual routers through the CLI because this prevents Junosphere from saving configuration changes to the correct .config files.
  • Auto logout does not work when you are in the Administration > Access Active Topology window. For security purposes, we recommend that you log out if you are not using Junosphere.

Parsing Capabilities

  • Parsing capabilities prevent user mistakes by limiting the use of free-form nomenclatures, such as custom bridge names, in a topology file. Currently, only bridge names in the range of private0 to private123 are allowed.

Junosphere Connector

  • To configure 802.1q VLAN tagging pass-through when using Junosphere Connector with the VMWare ESXi server, you must set the VLAN ID of the port group of the vSwitch to 4095. This will put the port into VGT mode which allows VLAN tags to be preserved across the vSwitch.
  • Junosphere Connector works on:
    • Linux:
      • CentOS release 5.5 (Final)
      • CentOS release 6.4 (Final)
      • Fedora release 14 (Laughlin)
    • Windows

Virtual Routers

  • The IPv6 BGP feed is currently not supported on Junosphere (PR/691145).
  • The auto-negotiation status always shows the status as Incomplete (PR/582791).
  • Web browser access to virtual routers via the Juniper Web Device Manager does not work.
  • When using a Web browser to access virtual routers, the Authentication button keeps spinning with a “loading data” message.

Configuration File

  • Junos OS configuration files must have a .conf extension because the VJX virtual machine saves configuration changes to the filename with a .conf extension. If you name a Junos OS configuration file <host-name>.config, zip it up, and load it to Junosphere, Junosphere will use the configuration files as is. It preserves the file name as is with the .config extension. The virtual machines are booted with these files and the virtual machines do not care about the extension either. But after you make changes to the virtual machine and commit the changes, the virtual machine saves the changes using the same file name but with a .conf extension. As a result, when you issue Save/Save As, the operation causes Junosphere to look for files with the original .config extension. Since the changes were written to files with a .conf extension, the changes never make it back to Junosphere. When you download the configuration file sets, you will not see the changes.
  • An interface ge-0/0/0 configuration is added to the topology.vmm topology file at the time of starting the topology. Remove the interface ge-0/0/0 configuration to avoid having duplicate IP addresses. First, commit your configuration changes. Download the zipped configuration fileset from the topology to your local PC and unzip it. Edit each .conf file, removing the interface ge-0/0/0 configuration. Save the .conf files and zip the configuration file set. The next time you upload the zipped topology fileset and start the topology, the new configuration will be implemented.
  • In the topology.vmm file, interfaces must be sequential; i.e., em0, em1, em2, and so on. Also, words that appear in all capital letters in script examples must be entered exactly as they appear in the examples. For example, EXTERNAL instead of external.

Secure Access

Secure Access is the technology behind the Junosphere Access Portal page. You can find information relating to it in the Secure Access Release Notes. Click the 7.1R1 version on the following page: .

Operational Notes

  • Reservations can be cancelled up to one hour before the start time.
  • Set your browser to allow pop-ups from The Network Connect function requires them.
  • The time zones displayed in Junosphere for reservation start time and end time are always in the time zone in which the browser is running. To make a reservation for another time zone, either convert the reservation time to your time zone or temporarily change your operating system time zone.
  • To change your own password, click the Settings icon in the upper right corner of the screen. The Change Password dialog box appears. Type your old password and new password (twice). Click the Change button.
  • The Junos Space image in Junosphere cannot display the device list or back-up configuration files properly. When backing up a configuration file from Junos Space, Junos Space sees all devices as a single device, so multiple configurations are saved under the first device name.
  • Navigating to the Active Topology tab with a large topology may cause a "JSPR-000 : Internal error occurred" message to be displayed (PR/813913). Refresh the browser.
  • The user may see a "Connection Timeout" message in the browser. This could be caused by slow internet connection, bursty traffic, and load on intermediary servers. Refresh the browser.
  • In the Virtual Machines tab, one or more of the VJX states my remain in "UNKNOWN" state. This could be caused by a bad or corrupted configuration file or a bad VJX license file. To fix this problem:
    1. Select the VJX.
    2. Click the Reset button and immediately telnet to the VJX and observe the boot process.
    3. Once the login prompt is visible, log in to the VJX
    4. Go to the CLI and verify the configurations with the appropriate CLI commands.
  • VJX12.3 has the following PR:
    • 846146 SNMPD_SET_FAILED: Snmp set failed: unable to connect to mgd.
  • VJX, VSRX, VPTX and VMX currently do not support In-Service Software Upgrade (ISSU).
  • Users must use root/Cloud credentials to access the VMX image. Otherwise, the credentials are deleted each time the topology is restarted or the VM goes through the bind and start process.

Resolved Known Problems

  • For VJX12.3: page fault in check_llc2_ifd. (PR841355)

Modified: 2015-07-29