Introduction 41Models 2603, 2621, and 2635 Getting Started Guide 4 • Ethernet LAN PortIntroductionThe Ethernet LAN interface/port can be configured with two IP addresses, a primary and a secondary IPaddress. The configuration web page is found by following the path -> Services Configuration (in the Configu-ration Menu) -> LAN -> ‘Change default LAN port IP address’ (button on the main window).The Basic and Advanced Port Attributes of the Ethernet LAN port is found by clicking on the Ethernet hyper-link in the IPLink’s Configuration Menu, the narrow window on the left-hand side of the web page. Clickingon the View advanced attributes... hyperlink leads to a webpage with only a few parameters that could be ofinterest. They are for controlling auto-negotiation, 100BaseT mode, and Full-duplex mode.LAN ConnectionsThe default LAN port’s IP address and netmask can be changed on this webpage. Go to -> Services Configura-tion (in the Configuration Menu) -> LAN -> ‘Change default LAN port IP address’ (button on the mainwindow). (See figure 17.) The primary IP address and mask can be modified here, but if you do, you will nolonger be able to access the IPLink’s webpages with the previous IP address. The interface associated with theEthernet is named ip1. You can also configure a secondary IP address to the Ethernet LAN port.Figure 17. Ethernet LAN port IP address configurationThe secondary IP address must be in the same subnet as the primary IP address. With primary and secondaryIP addresses, you can reach the IPLink’s webpages via either IP address. However you will have to login foreach separate IP address.Ethernet PortThe Ethernet Port Configuration webpage provides a summary of the Ethernet port’s performance. You reachit by clicking on the hyperlink Ethernet in the IPLink’s Configuration Menu window.The Basic Port Attributes webpage displays the most commonly used Ethernet parameters for determining theperformance of the Ethernet port (see figure 18 on page 42).