Create and Manage SDN Networks

An SDN network consists of Open vSwitch (OVS) bridges interconnected using VXLAN Tunnel End Points. These bridges are created on compute resources selected during SDN network creation process. Such a network is created quickly, just in a few clicks. Like other networks, using SDN network requires adding IP nets and IP ranges.    


View SDN Networks


To view SDN networks:

  1. Go to your Control Panel > AdminSettings menu.

  2. Click the SDN Management icon.

  3. Click the label of the manager.

  4. Click the Network management tab.

  5.  Click the label of an SDN network to view its details:

  • Label - the name of the SDN network
  • VNI - VXLAN Network Identifier (or VXLAN Segment ID)
  • Network zone - the label of the zone to which a network is assigned
  • Nodes - the list of the nodes on which the network`s bridges are created

You can also view SDN networks at Control Panel > Admin > Settings > Networks, although without the possiblity to edit or delete them.



Create SDN Network


To add a new SDN network:

  1. Go to your Control Panel > AdminSettings menu.

  2. Click the SDN Management icon.

  3. Click the label of the manager.

  4. Click the Network management tab.

  5. Click the Add SDN Network button.

  6. On the page that loads fill in the following details:

    • Label - the name of the SDN network
    • VNI - VXLAN Network Identifier (or VXLAN Segment ID)
    • Network zone - select from the drop-down menu the label of the zone to which a network will be assigned
  7. Click the button to add an SDN node

  8. In a popup box that appears on the screen, identify the following parameters:

    • Node - select the node from the drop-down menu
    • IP - IP address that will be used for the connection (transmit/receive VXLAN traffic) with other nodes
  9. Click Add to save the parameters.

  10. Click Apply to save the network


After you created the network, you have to add IP nets and IP ranges for the virtual server to use the network.



Connect SDN Network to SDN Node


If you want to extend your SDN network you can increase the set of SDN nodes to which the network is attached. 

To connect SDN network to SDN node:

  1. Go to your Control Panel > AdminSettings menu.

  2. Click the SDN Management icon.

  3. Click the label of the manager.

  4. Click the Network management tab.

  5. Click the Actions button next to the SDN network to which you want to attach a node and then click Connect node.

  6. On the page that loads, fill in the following details:
    • Connecting Node - select the SDN network node from the drop-down menu
    • Node - the node to which SDN network is connected
    • Local IP - IP address of the node
    • Remote IP - IP address of the connecting node
  7. Click the Submit button.




Assign/Unassign SDN Network to/from User


You can assign and unassign networks to/from users from the networks overview page. A user assigned to a specific SDN network can then assign this network's IP nets to his/her virtual routers and this network will be available only for this user for the VS creation/managing.

To assign a network to a particular user:

  1. Go to your Control Panel > AdminSettings menu.
  2. Click the Networks icon. The page that loads shows the shared networks in your cloud.
  3. Click the Actions button next to the SDN network you want to assign and then click Assign to user.
  4. In the pop-up box, select the user from the dropdown menu.
  5. Click the Assign button.

To unassign a network from a particular user:

  1. Go to your Control Panel > Admin > Settings menu.
  2. Click the Networks icon. The page that loads shows the shared networks in your cloud.
  3. Click the Actions button next to the assigned SDN network you want to unassign and then click Unassign.
  4. In the pop-up box, click the Unassign button.



Delete SDN Network


To delete an SDN Network:

  1. Go to your Control Panel > AdminSettings menu.

  2. Click the Networks icon.

  3. Click the Actions button next to the SDN network you want to delete and then click Delete.


Manage Bridges


SDN network consists with required OVS bridges and tunnels between bridges. The bridge is created on the SDN node and is deleted when you detach network from a node. 

In case bridge creation transaction fails, you can try to recreate the bridge.

To recreate bridges:

  1. Go to your Control Panel > AdminSettings menu.

  2. Click the SDN Management icon.

  3. Click the label of the manager.

  4. Click the Network management tab.

  5. Click the label of the SDN network you want to edit.

  6. Click the Tools button and then click Manage bridges.

  7. Click the Actions button next to the SDN bridge you want to recreate and then click Recreate.

To delete a bridge (detach network from a node):

  1. Go to your Control Panel > AdminSettings menu.

  2. Click the SDN Management icon.

  3. Click the label of the manager.

  4. Click the Network management tab.

  5. Click the label of the SDN network you want to edit.

  6. Click the Tools button and then click Manage bridges.

  7. Click the Actions button next to the SDN bridge you want to recreate and then click Destroy.


Cleanup Zombie Tunnels


Destroying an OVS bridge shedules automatic zombie tunnels cleanup transaction. If bridge deleting process is interrupted or cancelled, the transaction may fail. In this case, we recommend to cleanup such zombie tunnels manually.

To cleanup zombie tunnels:

  1. Go to your Control Panel > AdminSettings menu.

  2. Click the SDN Management icon.

  3. Click the label of the manager.

  4. Click the Network management tab.

  5. Click the label of the SDN network you want to edit.

  6. Click the Tools button and then click Cleanup zombie tunnels.