# Add IPv4 and IPv6 addresses to Master Engine interfaces

You can add several IPv4 addresses to each Physical Interface or VLAN Interface that does not have a Virtual Resource associated with it.

##

For more details about the product and how to configure features, click Help or press F1.

## Steps

1. Select Engine.
2. Right-click a Master Engine, then select Edit <element type>.
3. Browse to Interfaces.
4. Right-click a physical interface or a VLAN interface, then select New > IPv4 Address or New > IPv6 Address.
5. Configure the settings, then click OK.
6. Click Save.

## Next steps

Continue the configuration in one of the following ways:

- If you are configuring a new Master Engine, or if you want to change the roles the different interfaces have in the configuration, select system communication roles for Master Engine interfaces.
- Otherwise, refresh the policy to transfer the configuration changes.

## IP Address Properties dialog box (Master Engine interface)

Use this dialog box to define the properties of a Master Engine interface IP address.

Option | Definition
--- | ---
Node ID | Shows the number assigned to the node.
Node | Shows the name of the node.
IPv4 Address or IPv6 Address | Enter the IPv4 address or the IPv6 address.
Contact Address (IPv4 addresses only) | The IP address that components belonging to another Location use to connect to the interface. Double-clicking the Contact Address cell opens the Exceptions dialog box.
Comment | Adds a comment to the IP address.

Option | Definition
--- | ---
Network Settings section
Netmask (IPv4 addresses only) | Automatically populated IP address or netmask length (1–32). You can change this value if needed.
Prefix Length (IPv6 addresses only) | Automatically populated length. Adjust it if necessary by entering a value between 0–128.
Network Address | The network address is automatically filled in and cannot be edited.
Broadcast IP Address (IPv4 addresses only) | The broadcast IP address is automatically filled in and cannot be edited.

## Resolve IP Address From DNS Name dialog box

Use this dialog box to resolve an IP address from a DNS name.

Option | Definition
--- | ---
DNS Name | The DNS name that you want to resolve.
Resolve | Select to display a list of IP addresses that the DNS name resolves to. Note: The IP addresses are resolved by the computer running the SMC Client.
IP Address | Select the IP address that you want to use.