Managing Local Area Connections

Local area connections make it possible for computers to access resources on the network and the Internet. One local area connection is created automatically for each network adapter installed on a computer. This section examines techniques you can use to manage these connections.

Enabling and Disabling Local Area Connections

Local area connections are created and connected automatically. If you want to disable a connection so that it cannot be used, complete the following steps:

1. Click Start and then click Network. In Network Explorer, click Network And Sharing Center on the toolbar.
2. In Network And Sharing Center, click Manage Network Connections.
3. In Network Connections, right-click the connection and select Disable to deactivate the connection and disable it.
4. Later, if you want to enable the connection, right-click the connection in Network Connections and select Enable.

If you want to disconnect from a network or start another connection, complete the following steps:

1. Click Start and then click Network. In Network Explorer, click Network And Sharing Center on the toolbar.
2. In Network And Sharing Center, click Manage Network Connections.
3. In Network Connections, right-click the connection and select Disconnect. Typically, only remote access connections have a Disconnect option.
4. Later, if you want to activate the connection, right-click the connection in Network Connections and select Connect.

Checking the Status, Speed, and Activity for Local Area Connections

To check the status of a local area connection, follow these steps:

1. Click Start and then click Network. In Network Explorer, click Network And Sharing Center on the toolbar.
2. In Network And Sharing Center, click Manage Network Connections.
3. In Network Connections, right-click the connection you want to work with and then click Status.
4. This displays the Local Area Connection Status dialog box. If the connection is disabled or the media is unplugged, you won't be able to access this dialog box. Enable the connection or connect the network cable to resolve the problem and then try to display the status dialog box again.

The General tab of the Local Area Connection Status dialog box, provides useful information regarding the following:

• IPv4 Connectivity The current IPv4 connection state and type. You'll typically see the status as Local when connected to an internal network or Not Connected when not connected to a network.
• IPv6 Connectivity The current IPv6 connection state and type. You'll typically see the status as Local when connected to an internal network or Not Connected when not connected to a network.
• Media State The state of the media. Because the Status dialog box is only available when the connection is enabled, you'll typically see this as Enabled.
• Duration The amount of time the connection has been established. If the duration is fairly short, the user either recently connected to the network or the connection was recently reset.
• Speed The speed of the connection. This should read 10.0 Mbps for 10 Mbps connections and 100.0 Mbps for 100 Mbps connections. An incorrect setting can affect the computer's performance.
• Bytes The number of bytes sent and the number received by the connection. As the computer sends or receives packets, you'll see the computer icons light up to indicate the flow of traffic.