Network Management

Create External Network

When you create an external network, you must specify the details of the external network configuration.

You must be an administrator to perform this operation.

To create a external network, follow the steps given below.

  1. Log in to Clarity.
  2. Click Networks in the left panel.
  3. Click the Networks tab.
  4. Click Create New Network seen on the top right corner. Create External Network
  5. Select External Network as the Network Type.
  6. Enter the Network Name.
  7. Select the Admin state to start the network in.
  8. Select the tenant to which the network is available.
  9. Select the provider network type. If you select VXLAN as provider network type, you must specify the VXLAN ID.
If you select VLAN as provider network type, you must specify the VLAN ID.
  10. Select the physical network that the external network utilizes.
  11. Select the shared check box to make the network accessible across all tenants in your OpenStack cloud.
  12. Click Next.
  13. Click the Create a subnet now check box if you want to create a subnet.
  14. Enter the following details if you want to create a subnet. This is an optional step.
    Field Description
    Subnet name Name of the subnet
    Network Address (CIDR) Network address of the subnet
    IP version Version of IP protocol selected. Currently only IPv4 is supported, hence IPv4 is the default value.
    Gateway IP IP address through which devices outside the network can be accessed.
  15. Click Disable Gateway if you want to keep the subnet private.
  16. Click Next.
  17. Select the enable DCHP text box if you wish to enable DHCP addressing.
  18. Enter the allocation pools from which new IP addresses can be allocated.
 Enter the allocation pool in the following format <start IP address>-<end IP address>.
  19. Enter DNS name server addresses, if applicable.
  20. Enter the host and subnet routes in the format destination_CIDR, next hop.
 For example, you could have multiple entries in the route, if you want to route the traffic through a proxy or firewall.
  21. Click Next.
  22. Review the configuration details and then click Create if all details have been correctly entered.

An external network is created with the specifications mentioned in the network configuration.

Create Provider Network

When you create a provider network, you must specify the details of the physical network configuration that the provider network utilizes.

You must be an administrator to perform this operation.

To create a provider network, follow the steps given below.

  1. Log in to Clarity.
  2. Click Networks in the left panel.
  3. Click the Networks tab.
  4. Click Create New Network seen on the top right corner. Create Provider Network
  5. Select Provider Network as the Network Type.
  6. Enter the Network Name.
  7. Select the Admin state to start the network in. If you select UP, the network state is up. If you select DOWN, the network state is down.
  8. Select the tenant to which the network is available.
  9. Select the provider network type.
If you select VXLAN as provider network type, you must specify the VXLAN ID.
If you select VLAN as provider network type, you must specify the VLAN ID.
  10. Select the physical network that the provider network utilizes.
  11. Select the shared check box if you want to make the network accessible across all tenants in your OpenStack cloud.
  12. Click Next.
  13. Click the Create a subnet now check box if you want to create a subnet.
  14. Enter the following details if you want to create a subnet. This is an optional step.
    Field Description
    Subnet name Name of the subnet
    Network Address (CIDR) Network address of the subnet
    IP version Version of IP protocol selected. Currently only IPv4 is supported, hence IPv4 is the default value.
    Gateway IP IP address through which devices outside the network can be accessed.
  15. Click Disable Gateway if you want to keep the subnet private.
  16. Click Next.
  17. Select the enable DCHP text box if you wish to enable DHCP addressing.
  18. Enter the allocation pools from which new IP addresses can be allocated.
Enter the allocation pool in the following format -.
  19. Enter DNS name server addresses, if applicable.
  20. Enter the host and subnet routes in the format destination_CIDR, next hop. If there are multiple entries in the route, enter each entry on a new line. Give an example
  21. Click Next.
  22. Review the configuration details and then click Create if all details have been correctly entered.

A provider network is created with the specifications mentioned in the provider network configuration.

Create Tenant Network

As a self-service user, you may create only tenant networks. Network type is tenant network, by default, when a self-service user creates a network.

You can choose networks with subnets or create subnets for the tenant network while creating a tenant network.

You must be a self-service user or an administrator to perform this operation.

To create a tenant network, follow the steps given below.

  1. Log in to Clarity.
  2. Click Networks in the left panel.
  3. Click the Networks tab.
  4. Click Create New Network seen on the top right corner. Create New Tenant Network
  5. Enter Network name.
  6. Deselect Apply Port Security Group check box to disable port security. This is an optional step. Refer to the Disabling Port Security article on the support site for details on disabling port security.
  7. Click Next.
  8. Enter the following details if you want to create a subnet. This is an optional step. You could select an existing subnet instead of creating a new subnet.

    Field Description
    Subnet name Name of subnet
    Network Address (CIDR) Network address of the subnet
    IP version Version of IP protocol selected. Currently only IPv4 is supported, hence IPv4 is the default value.
    Gateway IP IP address through which devices outside the network can be accessed
  9. Click Disable Gateway if you want to keep the subnet private.
  10. Click Next.
  11. Select the enable DHCP text box if you wish to enable DHCP addressing.
  12. Enter the allocation pools from which new IP addresses can be allocated. Enter the allocation pool in the following format <start IP address>-<end IP address> (for example, 192.0.2.10 - 192.0.2.254).
  13. Enter DNS name server addresses, if applicable.
  14. Enter the host and subnet routes in the format destination_CIDR, next hop (for example, 192.0.2.0/24, 198.51.100.5). If there are multiple route entries, enter each entry on a new line.
  15. Click Next.
  16. Review the configuration details, and then click Create if all details have been correctly entered.

A network is created with the specifications mentioned in the network configuration.

Edit Network Name and State

You can edit the name of a network, the state of a network at any time.

If the network is a provider network you can enable or disable port security, enable or disable sharing of the network, make an external network you can make it an internal network.

You must be a self-service user or an administrator to perform this operation.

To edit network configuration, follow the steps given below.

  1. Log in to Clarity.
  2. Click Networks in the left panel.
  3. Click the Networks tab.
  4. Select the network that you want to edit. Edit Tenant Network
  5. Click Edit Network on the toolbar seen above the list of networks.
  6. Edit the network name and/or enable or disable port security.
  7. Click Update Network.

The network is updated with the new values, as specified during the updation.

Delete Network

You may delete provider network, external networks and/or tenant networks that you no longer require for use.

You can delete a network, if the network has been wrongly configured.

You can delete multiple networks at a time.

You must be an administrator to perform this operation. However, a self-service user can delete a tenant network.

To delete a network, follow the steps given below.

  1. Log in to Clarity.
  2. Click Networks in the left panel.
  3. Click the Networks tab.
  4. Select the check boxes for the networks that you want to delete. Delete Tenant Network
  5. Click Delete Networks on the toolbar seen above the list of networks.
  6. Click Delete Networks on the message if you are sure that you want to delete the selected network or networks.

The selected networks are deleted and the deleted networks are no longer available for use.