Advanced Router Setup

Log into the router's management interface using the appropriate IP address, username, and password. This is usually done via a web browser or through a command-line interface (CLI).

Before making changes, save a backup of the current router configuration from the management interface. This allows you to restore the original settings if needed.

Navigate to the VLAN settings and create VLANs by assigning VLAN IDs and names. Allocate the desired ports to each VLAN and configure the inter-VLAN routing if necessary.

Go to the NAT settings. Configure the outbound and inbound NAT rules to determine how traffic is translated between the local network and the internet. Typically, set up a dynamic NAT for outbound traffic and static NAT for servers that need external access.

In the routing section, add static routes to specify a fixed path for traffic to a particular network destination. Enter the destination network, subnet mask, and the gateway or interface.

Enable dynamic routing protocols such as OSPF or EIGRP as needed. Configure the properties of the chosen protocol, including network statements and any necessary authentication.

After configuring the settings, save the new configuration to the router’s memory. This usually involves a 'save' or 'commit' command in the CLI, or a save button in the web interface.

Test the new configuration by checking connectivity between VLANs, through the NAT, and along static and dynamic routes. Use tools like ping and tracert/traceroute to verify.

Record all configuration changes and the reasons for them in a change log or configuration management database. Include details like the date of the change and personnel involved.

Ensure you have the necessary permissions and access rights before attempting to configure router settings.

Consider updating the router to the latest firmware version before making changes to benefit from the latest features and security patches.

If unsure about a setting, refer to the manufacturer's documentation for default values and recommendations.