Understand Network Management Changes
| Limited Availability: Upgrade to SWG 13.0 for enhanced stability and security. Contact Skyhigh Support for assistance. |
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SWG 13.0 replaces the Network service in SWG 12.x or earlier with the NetworkManager service, which is responsible for managing all network connections.
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In SWG 13.0, if a VLAN interface is configured with DHCP and the DHCP leasing fails, resulting in no IP assigned on the configured interface, then the VLAN interface is removed from the config, and it will not be shown in the if config or ip as output.
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As the NetworkManager in SWG 13.0 doesn’t support dhclient command for assigning DHCP IPs to the interface, it is recommended to use nmcli as the NetworkManager and execute the following commands:
NOTE: Make sure the applicable interfaces are enabled in UI before running the following commands.
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Requirement |
Command |
|---|---|
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To check the current IP |
nmcli device show <interface> |
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To release the IP |
nmcli device disconnect <interface> |
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To renew the IP |
nmcli device connect <interface> |
| To show all connections | nmcli connection show |
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To check the interface status |
nmcli device status |
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To get the connection details |
nmcli connection |
| To restart the network stack | nmcli networking off && nmcli networking on |
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Specific connection details |
nmcli connection show <connection_name> |
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Make the connection up |
nmcli connection up <connection_name> |
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To bring the connection down |
nmcli connection down <connection name> |
IMPORTANT: If a DHCPv6 service is running in the network, the appliance/VM may automatically receive an IPv6 address on the DHCP-enabled interface after installation. To ensure IPv6 is disabled, log in to the SWG interface > Configuration > Network Interfaces, mark the IPv6 settings as Disabled (even if they already appear disabled), and save the changes. This action disables IPv6 and removes the assigned IPv6 address from the interface.