3Com 3CDSG8-US Installation Guide - Page 5

Wall mounting template Managed Gigabit Switch 150mm apart 2. SETTING UP FOR MANAGEMENT Your Switch can operate in its default state, that is, you can install it and it will work straight away (plug-and-play). However, to make full use of the features offered by the Switch, and to change and monitor the way it works, you have to access the management software that resides on the Switch. This is known as managing the Switch. Managing the Switch can help you to improve the efficiency of the Switch and therefore the overall performance of your network. IP Configuration When the switch is powered up and connected to a network, the switch will obtain an address from the DHCP server. If there is no DHCP server available, the switch will use a default IP address of 169.254.xx.yy, where xx and yy are the last two bytes of the MAC address. This default IP address is also printed on the label attached to the underside of your switch. Before you can manage your switch, you will need to determine it's IP address to allow a web browser to connect to it. You can do this either by connecting your workstation to the console interface using the cable supplied, or using the 3Com Switch Detect application that can be found on the CD that was supplied with the Switch. Please follow the instructions below to determine and/or configure the IP address of your switch. Using the Console Interface 1. Connect the DB-9 to RJ-45 serial cable between your workstation (to it's COM port) and the Switch. Take care not to connect it to a data port on the Switch. 2. Using a terminal emulator program, for example HyperTerminal, connect to the appropriate COM port on the workstation and ensure the following parameters are set: 38400 baud, 8 data bits, no parity, 1 stop bit and no flow control. 3. If the Switch is not already powered up, power it up now and wait for the boot up sequence to complete. 4. When the boot up sequence is completed, you will be presented with a login prompt. The default username is admin. No password is required. 5. To show the IP address the switch is using, enter IP status and press Return. The switch will display the IP address the switch is using. This address can now be used in your preferred web browser to connect to the Switch User Interface. Use the same username to log in. 6. If you want to manually assign an IP address, enter the following commands: IP dhcp disable and press Return IP Setup and press Return For example: IP Setup 192.168.1.2 255.255.255.0 192.168.1.1 You can now direct the web browser at the 192.168.1.2 address. 5