MX64 Installation Guide – Cisco Meraki

Setting VLANs

If your WAN uplink is on a trunk port, choose VLAN tagging > Use VLAN tagging and enter the appropriate value for VLAN ID for your network.

You can toggle the LAN4 port between LAN and Internet, through Uplink configuration under the Local status tab.

PPPoE authentication may be required if you are connecting MX device to a DSL circuit. You need to know your authentication option and credentials (supplied by your ISP) in order to complete these steps.

These settings take effect if the MX device has to fall back to using HTTP to contact the Cloud Controller. By default, web proxy is disabled. To enable web proxy, do the following:

To apply all configuration settings to the appliance, be sure to click Save Settings at the bottom of the page.

Configuring physical link settings

To configure physical link settings on the Ethernet ports, click Local status > Ethernet configuration. You can enable half duplex, full duplex, and autonegotiation, as well as set 10- or 100-Mbps data rates.

Here is the original post:
MX64 Installation Guide - Cisco Meraki